fix(assassin): preserve external potion effects

design/log.md

@@ -6,6 +6,115 @@ description: Chronological record of material decisions affecting the Spigot Tyr
 
 # Spigot Tyrant Design Log
 
+## 2026-08-18 — Preserve ordinary potion effects
+
+- Corrected Assassin effect maintenance so it refreshes active Tyrant abilities without removing invisibility, Speed, or Weakness supplied by potions, commands, or other plugins.
+- Expired or inapplicable Tyrant-managed effects stop refreshing and expire naturally within their short 30-tick maintenance duration, while double-jump flight cleanup remains immediate.
+- Reopened and completed US-005 with regression coverage; verified `./gradlew clean check jar`.
+
+## 2026-08-14 — Opt-out proximity glow completed
+
+- Extended US-011 with a globally visible green outline for opted-out players in the Tyrant's world and configured range while the event is running.
+- A periodic controller removes the glow when eligibility, proximity, world, lifecycle, or player availability changes and clears managed state on logout and shutdown.
+- Scoreboard presentation records and restores each player's previous team and glowing state instead of permanently replacing unrelated presentation.
+- Verified inclusive range behavior, lifecycle and availability gating, green presentation, restoration, and the full Gradle build.
+
+## 2026-08-14 — Opt-out proximity glow started
+
+- US-011 is reopened for a test-first green outline on opted-out players near the Tyrant during a running event, using the existing configurable Tyrant range.
+- Cleanup will cover range, world, participation, lifecycle, availability, shutdown, and restoration of pre-existing scoreboard-team membership.
+
+## 2026-08-14 — Join messaging refinement completed
+
+- Updated US-011 so join output no longer announces running, paused, or unstarted lifecycle state.
+- Eligible unassigned players now see the neutral prompt, `Use /tyrant optout if you do not want to participate in Tyrant events.`
+- Role, class, ability, cooldown, and existing opt-out details remain unchanged.
+- Verified both assigned and unassigned join output with automated tests.
+
+## 2026-08-14 — Join messaging refinement started
+
+- US-011 is reopened to remove lifecycle announcements from join output and make the opt-out prompt refer generally to Tyrant events.
+
+## 2026-08-14 — Opt-out combat protection completed
+
+- Extended US-011 with bidirectional combat isolation between opted-out players and the Tyrant, Assassin, Fixer, or Tamer while the event is running.
+- Direct player attacks and player-fired projectiles are cancelled at highest event priority, and the attacker is told that the target has chosen not to participate in the Tyrant event.
+- Paused, unstarted, and unrelated combat remains ordinary Minecraft gameplay.
+- Verified both attack directions, every Tyrant-side class, projectile attribution, lifecycle gating, and unrelated combat with automated tests.
+
+## 2026-08-14 — Opt-out combat protection started
+
+- US-011 is reopened for test-first running-event combat isolation between opted-out players and the Tyrant or Tyrant-side class holders.
+- Paused and unstarted gameplay remains ordinary Minecraft combat; blocked direct and projectile attackers receive a concise Tyrant event participation message.
+
+## 2026-08-14 — Tamer completed
+
+- Completed US-007 with the no-cooldown owner-bound Tamer's Lead, server-generated entity snapshots, durable capture IDs, and one bound Captured Mob item per entity.
+- Capture checks inventory capacity before atomically storing state and removing the entity; placement consumes state and item only after safe validated spawning.
+- Dropping or dying with a captured mob spawns it immediately, while container and dispenser transfer paths are blocked and invalid placement retains custody.
+- Ender Dragons are always forbidden; configured bosses, named mobs, and tamed or owned mobs are denied, and snapshot type is validated before creation.
+- Verified snapshot custody state, exact release, Ender Dragon rejection, YAML persistence, configuration, and the full Gradle build.
+
+## 2026-08-14 — Tamer implementation started
+
+- US-007 begins with test-first snapshot custody, no-cooldown capture items, safe placement/drop/death spawning, and duplication-resistant state transitions.
+
+## 2026-08-14 — Tyrant abilities completed
+
+- Completed US-009 with configurable permanent Strength and Resistance purchases continuously restored for the active Tyrant throughout the running reign.
+- Added `/tyrant intelligence` with a rolling configurable 24-hour unpaused cooldown and an aggregate count of the Vigilante plus assigned non-opted-out Followers without identities or locations.
+- Ability ownership and cooldowns remain visible in status output, persist across restart, and are cleared by existing reign succession cleanup.
+- Verified intelligence authorization, counts, cooldown persistence, effect configuration, and the full Gradle build.
+
+## 2026-08-14 — Tyrant ability implementation started
+
+- US-009 begins with test-first permanent effect ownership, automatic reapplication, and rolling-24-hour opposition roster intelligence.
+
+## 2026-08-14 — Fixer completed
+
+- Completed US-006 with the named owner-bound Fixer's Wrench, one-hour cooldown, and ten-minute Strength and Health Boost activation.
+- Activation records a fixed normal two-row or near-Tyrant three-row heart tier using same-world configurable proximity at use time.
+- Continuously refreshed effects survive death, login, milk, and ordinary removal; expiry and class loss remove effects and clamp health safely to the resulting maximum.
+- Verified activation tiers, active and cooldown deadlines, item consumption/readiness, persistence, and the full Gradle build.
+
+## 2026-08-14 — Fixer implementation started
+
+- US-006 begins with test-first bound-item combat boosts, activation-time proximity tiers, persistent cooldowns, and safe health cleanup.
+
+## 2026-08-14 — Assassin completed
+
+- Completed US-005 with named owner-bound Assassin Cloak activation, one-hour cooldown, particle-free ten-minute invisibility, and activation-time doubling within the Tyrant's configurable range.
+- Added 60-second double-jump gating, upward launch, 15-second Speed, 20-second Weakness III, and grounded readiness restoration.
+- Active effects and cooldowns persist as UTC deadlines and are continuously restored after death, login, milk, or ordinary removal while valid.
+- Verified duration tiers, cooldown consumption and refresh, jump effect deadlines, class constraints, persistence, and the full Gradle build.
+
+## 2026-08-14 — Assassin implementation started
+
+- US-005 begins with test-first bound-item invisibility, near-Tyrant duration doubling, and cooldown-gated double-jump effects.
+
+## 2026-08-14 — Bound ability items completed
+
+- Completed US-014 with configurable named standard items carrying hidden owner and ability metadata, interaction cancellation, and owner-validated Assassin, Fixer, and Tamer activation.
+- Cooldown items are consumed only on successful use, restored automatically when ready or by `/tyrant item`, deduplicated, and withheld with clear guidance when inventory space is unavailable.
+- Drop, pickup, placement, crafting/storage movement, item-frame, dispenser, death, class loss, reign reset, login, and restart paths prevent transfer and duplication.
+- Captured-mob custody items use independent IDs, reconcile missing or duplicate inventory items against durable snapshots, and spawn rather than vanish on drop or death.
+- Verified readiness consumption and refresh, assignment cleanup, durable metadata state, captured custody, and the full Gradle build.
+
+## 2026-08-14 — Bound ability item implementation started
+
+- US-014 begins with test-first item readiness and recovery, owner metadata, transfer prevention, cooldown redelivery, and Tamer item permanence.
+
+## 2026-08-14 — Vigilante and Followers completed
+
+- Completed US-008 with `/vigilante` invitation, acceptance, dismissal, and leave flows while preserving independent Tyrant-side class assignments.
+- Added Tyrant/Vigilante combat tracking and continuously refreshed Strength and Resistance based on living same-world Followers within the configurable 50-block range, capped at Strength V and Resistance IV by default.
+- Every Vigilante death now awards progression only to the Tyrant killer, clears Followers, and applies normal recently-active replacement with previous-holder fallback.
+- Verified membership, dual alignment, scaling and caps, role maintenance, command metadata, and death/progression components with the Gradle suite.
+
+## 2026-08-14 — Vigilante and Follower implementation started
+
+- US-008 begins with test-first invitation membership, death reroll and Tyrant reward integration, combat tracking, and proximity-scaled capped effects.
+
 ## 2026-08-14 — Participation completed
 
 - Completed US-011 with `/tyrant status`, `optout`, `optin`, and confirmed `relinquish` flows plus comprehensive join messages for lifecycle, roles, classes, abilities, and cooldowns.

design/user-stories/us-005-use-assassin-abilities.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-005: Use Assassin abilities"
 description: Give the Assassin timed stealth and a risky burst-mobility ability.
-status: backlog
+status: done
 ---
 
 # US-005: Use Assassin abilities
@@ -11,15 +11,22 @@ As the **Assassin**, I want stealth and burst mobility so that I can ambush oppo
 
 ## Acceptance criteria
 
-- [ ] The Assassin can activate ten minutes of invisibility once per rolling hour using the named Assassin ability item.
+- [x] The Assassin can activate ten minutes of invisibility once per rolling hour using the named Assassin ability item.
-- [ ] Invisibility displays no potion particles.
+- [x] Invisibility displays no potion particles.
-- [ ] Activation while in the same world and within the configured Tyrant range grants twenty minutes instead.
+- [x] Activation while in the same world and within the configured Tyrant range grants twenty minutes instead.
-- [ ] Proximity is evaluated when the ability is activated and does not alter the active duration afterward.
+- [x] Proximity is evaluated when the ability is activated and does not alter the active duration afterward.
-- [ ] The Assassin can double-jump once every 60 seconds without requiring an item.
+- [x] The Assassin can double-jump once every 60 seconds without requiring an item.
-- [ ] A successful double-jump grants Speed for 15 seconds and Weakness III for 20 seconds.
+- [x] A successful double-jump grants Speed for 15 seconds and Weakness III for 20 seconds.
-- [ ] Grounding and supported movement reset jump availability only after the 60-second cooldown has elapsed.
+- [x] Grounding and supported movement reset jump availability only after the 60-second cooldown has elapsed.
-- [ ] Ability cooldowns use unpaused elapsed time and survive death, logout, and restart.
+- [x] Ability cooldowns use unpaused elapsed time and survive death, logout, and restart.
-- [ ] The player can inspect remaining cooldowns and receives clear feedback when an activation is unavailable.
+- [x] The player can inspect remaining cooldowns and receives clear feedback when an activation is unavailable.
+- [x] Tyrant removes only Assassin potion effects that Tyrant itself applied.
+- [x] Invisibility from potions, commands, or other plugins remains active for Assassins and non-Assassins.
+- [x] Tyrant-managed Assassin effects are still removed when abilities expire, roles change, games stop, or the plugin disables.
+
+## Validation
+
+Automated controller tests verify that inactive Tyrant state does not alter ordinary potion effects, active Assassin invisibility is refreshed, and refresh stops at expiry so the short managed effect expires naturally. The complete `./gradlew clean check jar` lifecycle passes.
 
 ## Related
 

design/user-stories/us-006-use-fixer-abilities.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-006: Use Fixer abilities"
 description: Give the Fixer a periodic offensive and health enhancement strengthened near the Tyrant.
-status: backlog
+status: done
 ---
 
 # US-006: Use Fixer abilities
@@ -11,13 +11,13 @@ As the **Fixer**, I want a substantial temporary combat boost so that I can prot
 
 ## Acceptance criteria
 
-- [ ] The Fixer can activate ten minutes of Strength and Health Boost once per rolling hour using the named Fixer ability item.
+- [x] The Fixer can activate ten minutes of Strength and Health Boost once per rolling hour using the named Fixer ability item.
-- [ ] Normal activation provides two total rows of hearts when combined with the player's normal maximum health.
+- [x] Normal activation provides two total rows of hearts when combined with the player's normal maximum health.
-- [ ] Activation in the same world and within the configured Tyrant range provides three total rows of hearts.
+- [x] Activation in the same world and within the configured Tyrant range provides three total rows of hearts.
-- [ ] Proximity is evaluated when the ability is activated and does not alter the active tier afterward.
+- [x] Proximity is evaluated when the ability is activated and does not alter the active tier afterward.
-- [ ] Health is safely clamped when the boost expires, is suppressed, or changes tier.
+- [x] Health is safely clamped when the boost expires, is suppressed, or changes tier.
-- [ ] The cooldown uses unpaused elapsed time and survives death, logout, and restart.
+- [x] The cooldown uses unpaused elapsed time and survives death, logout, and restart.
-- [ ] The player can inspect the remaining cooldown and receives clear feedback when activation is unavailable.
+- [x] The player can inspect the remaining cooldown and receives clear feedback when activation is unavailable.
 
 ## Related
 

design/user-stories/us-007-capture-and-place-mobs.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-007: Capture and place mobs as a Tamer"
 description: Let the Tamer move supported mobs without losing or duplicating them.
-status: backlog
+status: done
 ---
 
 # US-007: Capture and place mobs as a Tamer
@@ -11,16 +11,16 @@ As the **Tamer**, I want to capture a mob and release it elsewhere so that I can
 
 ## Acceptance criteria
 
-- [ ] The Tamer can use a named fishing rod on a supported targeted mob to capture it with no cooldown.
+- [x] The Tamer can use a named fishing rod on a supported targeted mob to capture it with no cooldown.
-- [ ] A successful capture atomically removes the original mob and creates one bound captured-mob item.
+- [x] A successful capture atomically removes the original mob and creates one bound captured-mob item.
-- [ ] If inventory space is unavailable, capture fails, the mob remains in place, and the Tamer is told how to make room and retry.
+- [x] If inventory space is unavailable, capture fails, the mob remains in place, and the Tamer is told how to make room and retry.
-- [ ] Using the captured-mob item places the stored mob at a safe valid location and consumes the item only after a successful spawn.
+- [x] Using the captured-mob item places the stored mob at a safe valid location and consumes the item only after a successful spawn.
-- [ ] Dropping a captured-mob item safely spawns its mob instead of deleting it.
+- [x] Dropping a captured-mob item safely spawns its mob instead of deleting it.
-- [ ] Every captured mob carried by a player spawns safely when that player dies.
+- [x] Every captured mob carried by a player spawns safely when that player dies.
-- [ ] Ender Dragons, boss entities, named mobs, and mobs tamed or owned by another player are denied by default.
+- [x] Ender Dragons, boss entities, named mobs, and mobs tamed or owned by another player are denied by default.
-- [ ] Capture restrictions are configurable without permitting Ender Dragons.
+- [x] Capture restrictions are configurable without permitting Ender Dragons.
-- [ ] Invalid placement, full inventory, death, logout, restart, plugin disable, containers, and concurrent interaction cannot lose or duplicate a mob.
+- [x] Invalid placement, full inventory, death, logout, restart, plugin disable, containers, and concurrent interaction cannot lose or duplicate a mob.
-- [ ] Stored mob data is validated defensively before spawning and cannot execute untrusted serialized behavior.
+- [x] Stored mob data is validated defensively before spawning and cannot execute untrusted serialized behavior.
 
 ## Related
 

design/user-stories/us-008-support-vigilante-and-followers.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-008: Support the Vigilante and Followers"
 description: Give the Vigilante a replaceable role and combat strength derived from nearby Followers.
-status: backlog
+status: done
 ---
 
 # US-008: Support the Vigilante and Followers
@@ -11,18 +11,18 @@ As the **Vigilante**, I want nearby living Followers to strengthen me against th
 
 ## Acceptance criteria
 
-- [ ] Exactly one active Vigilante exists while the game is running whenever an eligible player is available.
+- [x] Exactly one active Vigilante exists while the game is running whenever an eligible player is available.
-- [ ] The Vigilante can invite eligible opted-in players to become Followers, and recruitment requires acceptance.
+- [x] The Vigilante can invite eligible opted-in players to become Followers, and recruitment requires acceptance.
-- [ ] The Vigilante can dismiss Followers and Followers can leave voluntarily.
+- [x] The Vigilante can dismiss Followers and Followers can leave voluntarily.
-- [ ] While actively fighting the Tyrant, the Vigilante gains one potion level each of Strength and Resistance per living Follower in the same world within 50 blocks.
+- [x] While actively fighting the Tyrant, the Vigilante gains one potion level each of Strength and Resistance per living Follower in the same world within 50 blocks.
-- [ ] Offline, dead, opted-out, dismissed, or out-of-range Followers do not count.
+- [x] Offline, dead, opted-out, dismissed, or out-of-range Followers do not count.
-- [ ] A Vigilante or Follower may simultaneously hold one Tyrant-side class without losing Vigilante-side membership.
+- [x] A Vigilante or Follower may simultaneously hold one Tyrant-side class without losing Vigilante-side membership.
-- [ ] Effect levels update promptly as combat starts or ends and as Followers move, die, respawn, disconnect, or change assignment.
+- [x] Effect levels update promptly as combat starts or ends and as Followers move, die, respawn, disconnect, or change assignment.
-- [ ] Scaling is capped by validated configuration, defaulting to Strength V and Resistance IV.
+- [x] Scaling is capped by validated configuration, defaulting to Strength V and Resistance IV.
-- [ ] Every Vigilante death ends the assignment and triggers random replacement regardless of cause.
+- [x] Every Vigilante death ends the assignment and triggers random replacement regardless of cause.
-- [ ] The deceased Vigilante is excluded when another eligible non-Tyrant candidate exists and is reused only when no such candidate exists.
+- [x] The deceased Vigilante is excluded when another eligible non-Tyrant candidate exists and is reused only when no such candidate exists.
-- [ ] Followers are cleared rather than transferred when their Vigilante dies or loses the position.
+- [x] Followers are cleared rather than transferred when their Vigilante dies or loses the position.
-- [ ] The Tyrant is never eligible to be selected as Vigilante.
+- [x] The Tyrant is never eligible to be selected as Vigilante.
 
 ## Related
 

design/user-stories/us-009-use-tyrant-abilities.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-009: Purchase and use Tyrant abilities"
 description: Give the Tyrant persistent combat upgrades and limited intelligence about the opposition.
-status: backlog
+status: done
 ---
 
 # US-009: Purchase and use Tyrant abilities
@@ -11,14 +11,14 @@ As the **Tyrant**, I want permanent upgrades and limited roster intelligence so
 
 ## Acceptance criteria
 
-- [ ] Purchasing permanent Strength applies the configured Strength level throughout the current reign while the game is running.
+- [x] Purchasing permanent Strength applies the configured Strength level throughout the current reign while the game is running.
-- [ ] Purchasing permanent Resistance applies the configured Resistance level throughout the current reign while the game is running.
+- [x] Purchasing permanent Resistance applies the configured Resistance level throughout the current reign while the game is running.
-- [ ] Permanent effects are restored after death, milk consumption, ordinary effect removal, login, restart, and replacement by a shorter or weaker effect.
+- [x] Permanent effects are restored after death, milk consumption, ordinary effect removal, login, restart, and replacement by a shorter or weaker effect.
-- [ ] Roster intelligence can be activated once per rolling 24 unpaused hours after it is purchased.
+- [x] Roster intelligence can be activated once per rolling 24 unpaused hours after it is purchased.
-- [ ] Roster intelligence reports the number of active Vigilante-side members without revealing their identities or locations.
+- [x] Roster intelligence reports the number of active Vigilante-side members without revealing their identities or locations.
-- [ ] Intelligence counts the current Vigilante and living assigned Followers, whether online or offline, according to configurable counting rules.
+- [x] Intelligence counts the current Vigilante and living assigned Followers, whether online or offline, according to configurable counting rules.
-- [ ] The Tyrant can inspect ability ownership and the remaining intelligence cooldown.
+- [x] The Tyrant can inspect ability ownership and the remaining intelligence cooldown.
-- [ ] Purchases and cooldowns survive restart and end with the Tyrant's reign.
+- [x] Purchases and cooldowns survive restart and end with the Tyrant's reign.
 
 ## Related
 

design/user-stories/us-011-inform-and-manage-participation.md

@@ -11,7 +11,8 @@ As a **player**, I want to understand my status and control my eligibility so th
 
 ## Acceptance criteria
 
-- [x] On join, a player is told the game status and their role, class, subclass, abilities, and relevant cooldowns.
+- [x] On join, lifecycle state is omitted while role, class, subclass, ability, and relevant cooldown information remains available when applicable.
+- [x] Eligible players are invited to opt out of Tyrant events without implying that an event is currently running.
 - [x] An unassigned opted-in player is told that they are eligible and shown the opt-out command.
 - [x] An opted-out player is told when they may opt back in.
 - [x] An unassigned player can opt out through a command.
@@ -20,6 +21,15 @@ As a **player**, I want to understand my status and control my eligibility so th
 - [x] A player cannot opt back in until seven days have elapsed by default.
 - [x] The opt-out duration is configurable, uses unpaused elapsed time, and survives restart.
 - [x] Participation commands are idempotent and clearly report current status and remaining time.
+- [x] While the event is running, damage is cancelled when the Tyrant or an Assassin, Fixer, or Tamer attacks an opted-out player.
+- [x] While the event is running, damage is cancelled when an opted-out player attacks the Tyrant or an Assassin, Fixer, or Tamer.
+- [x] Cancelled attackers are told that the target has chosen not to take part in the Tyrant event.
+- [x] Protection covers direct player attacks and player-fired projectiles without changing unrelated combat.
+- [x] Participation combat protection does not apply while the event is paused or not started.
+- [x] While the event is running, an opted-out player in the same world and within the configured Tyrant range has a green glowing outline visible to everyone.
+- [x] The opt-out glow is removed when proximity, participation, player availability, Tyrant availability, or running-event requirements stop being satisfied.
+- [x] Existing scoreboard-team membership is restored after the opt-out glow ends, and plugin shutdown safely clears managed glow state.
+- [x] Opt-out proximity glow does not apply while the event is paused or not started.
 
 ## Related
 

design/user-stories/us-014-use-class-ability-items.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-014: Use class ability items"
 description: Give class holders named bound items that activate abilities without enabling transfer or cooldown bypasses.
-status: backlog
+status: done
 ---
 
 # US-014: Use class ability items
@@ -11,17 +11,17 @@ As a **class holder**, I want a recognizable inventory item for my ability so th
 
 ## Acceptance criteria
 
-- [ ] Each item-triggered class ability uses a uniquely named standard Minecraft item with hidden persistent ownership and ability metadata.
+- [x] Each item-triggered class ability uses a uniquely named standard Minecraft item with hidden persistent ownership and ability metadata.
-- [ ] Right-clicking or swinging the appropriate item activates the ability without also performing an unsafe vanilla action.
+- [x] Right-clicking or swinging the appropriate item activates the ability without also performing an unsafe vanilla action.
-- [ ] Another player cannot activate, retain, craft with, place, store, frame, dispense, or otherwise transfer a bound ability item.
+- [x] Another player cannot activate, retain, craft with, place, store, frame, dispense, or otherwise transfer a bound ability item.
-- [ ] A cooldown ability item disappears only after successful activation and is restored when the cooldown finishes.
+- [x] A cooldown ability item disappears only after successful activation and is restored when the cooldown finishes.
-- [ ] The Tamer's named fishing rod has no cooldown and remains available after successful capture or placement.
+- [x] The Tamer's named fishing rod has no cooldown and remains available after successful capture or placement.
-- [ ] A dropped class ability item vanishes immediately; a dropped captured-mob item instead attempts to spawn its mob safely.
+- [x] A dropped class ability item vanishes immediately; a dropped captured-mob item instead attempts to spawn its mob safely.
-- [ ] `/tyrant item` restores currently available missing class items but cannot bypass cooldowns or create duplicates.
+- [x] `/tyrant item` restores currently available missing class items but cannot bypass cooldowns or create duplicates.
-- [ ] Missing ready items are restored on login and cooldown completion when inventory space is available.
+- [x] Missing ready items are restored on login and cooldown completion when inventory space is available.
-- [ ] When delivery fails because the inventory is full, no item is dropped and the player is told both why and how to use `/tyrant item` after making room.
+- [x] When delivery fails because the inventory is full, no item is dropped and the player is told both why and how to use `/tyrant item` after making room.
-- [ ] Bound class items are removed when a player loses the class or the Tyrant's reign ends.
+- [x] Bound class items are removed when a player loses the class or the Tyrant's reign ends.
-- [ ] Death, inventory movement, server restart, repeated commands, and concurrent events cannot duplicate a bound item or its captured mob.
+- [x] Death, inventory movement, server restart, repeated commands, and concurrent events cannot duplicate a bound item or its captured mob.
 
 ## Related
 

src/main/java/games/dmg/spigottyrant/Ability.java

@@ -2,8 +2,13 @@ package games.dmg.spigottyrant;
 
 public enum Ability {
     ASSASSIN_INVISIBILITY,
+    ASSASSIN_INVISIBILITY_ACTIVE,
     ASSASSIN_DOUBLE_JUMP,
+    ASSASSIN_SPEED_ACTIVE,
+    ASSASSIN_WEAKNESS_ACTIVE,
     FIXER_BOOST,
+    FIXER_BOOST_ACTIVE,
+    FIXER_NEAR_TYRANT_ACTIVE,
     TAMER_CAPTURE,
     ROSTER_INTELLIGENCE
 }

src/main/java/games/dmg/spigottyrant/AbilityItemRefreshTask.java

@@ -0,0 +1,49 @@
+package games.dmg.spigottyrant;
+
+import java.time.Clock;
+import org.bukkit.Server;
+import org.bukkit.entity.Player;
+
+public final class AbilityItemRefreshTask implements Runnable {
+    private final TyrantStateManager stateManager;
+    private final AbilityReadinessService readiness;
+    private final AbilityItemService items;
+    private final Server server;
+    private final Clock clock;
+    private final CapturedMobInventoryService capturedMobInventory;
+
+    public AbilityItemRefreshTask(
+        TyrantStateManager stateManager,
+        AbilityReadinessService readiness,
+        AbilityItemService items,
+        CapturedMobInventoryService capturedMobInventory,
+        Server server,
+        Clock clock
+    ) {
+        this.stateManager = stateManager;
+        this.readiness = readiness;
+        this.items = items;
+        this.capturedMobInventory = capturedMobInventory;
+        this.server = server;
+        this.clock = clock;
+    }
+
+    @Override
+    public void run() {
+        if (stateManager.game().lifecycle() != GameLifecycle.RUNNING) {
+            return;
+        }
+        for (Player player : server.getOnlinePlayers()) {
+            PlayerState before = stateManager.player(player.getUniqueId(), player.getName());
+            PlayerState after = readiness.refresh(before, clock.instant());
+            if (!after.equals(before)) {
+                stateManager.updatePlayer(
+                    player.getUniqueId(), player.getName(), current -> after
+                );
+            }
+            items.removeInvalid(player, after);
+            items.recover(player, after);
+            capturedMobInventory.reconcile(player, after);
+        }
+    }
+}

src/main/java/games/dmg/spigottyrant/AbilityItemService.java

@@ -0,0 +1,20 @@
+package games.dmg.spigottyrant;
+
+import java.util.Optional;
+import java.util.UUID;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+public interface AbilityItemService {
+    void recover(Player player, PlayerState state);
+
+    boolean isBoundAbilityItem(ItemStack item);
+
+    Optional<Ability> ability(ItemStack item);
+
+    Optional<UUID> owner(ItemStack item);
+
+    void removeInvalid(Player player, PlayerState state);
+
+    void removeAll(Player player);
+}

src/main/java/games/dmg/spigottyrant/AbilityReadinessService.java

@@ -0,0 +1,68 @@
+package games.dmg.spigottyrant;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.EnumMap;
+import java.util.EnumSet;
+import java.util.Map;
+import java.util.Set;
+
+public final class AbilityReadinessService {
+    public PlayerState consume(
+        PlayerState player,
+        Ability ability,
+        Instant now,
+        Duration cooldown
+    ) {
+        if (!player.readyAbilityItems().contains(ability)) {
+            throw new IllegalStateException("ability item is not ready");
+        }
+        if (ability == Ability.TAMER_CAPTURE && cooldown.isZero()) {
+            return player;
+        }
+        Set<Ability> ready = EnumSet.noneOf(Ability.class);
+        ready.addAll(player.readyAbilityItems());
+        ready.remove(ability);
+        Map<Ability, Instant> cooldowns = new EnumMap<>(Ability.class);
+        cooldowns.putAll(player.cooldownEnds());
+        cooldowns.put(ability, now.plus(cooldown));
+        return copy(player, cooldowns, ready);
+    }
+
+    public PlayerState refresh(PlayerState player, Instant now) {
+        Map<Ability, Instant> cooldowns = new EnumMap<>(Ability.class);
+        cooldowns.putAll(player.cooldownEnds());
+        Set<Ability> ready = EnumSet.noneOf(Ability.class);
+        ready.addAll(player.readyAbilityItems());
+        for (Map.Entry<Ability, Instant> entry : player.cooldownEnds().entrySet()) {
+            if (!entry.getValue().isAfter(now)) {
+                cooldowns.remove(entry.getKey());
+                if (isItemAbilityForClass(entry.getKey(), player.tyrantClass())) {
+                    ready.add(entry.getKey());
+                }
+            }
+        }
+        return copy(player, cooldowns, ready);
+    }
+
+    private static boolean isItemAbilityForClass(Ability ability, TyrantClass tyrantClass) {
+        return switch (tyrantClass) {
+            case ASSASSIN -> ability == Ability.ASSASSIN_INVISIBILITY;
+            case FIXER -> ability == Ability.FIXER_BOOST;
+            case TAMER -> ability == Ability.TAMER_CAPTURE;
+            case NONE -> false;
+        };
+    }
+
+    private static PlayerState copy(
+        PlayerState player,
+        Map<Ability, Instant> cooldowns,
+        Set<Ability> ready
+    ) {
+        return new PlayerState(
+            player.playerId(), player.latestName(), player.lastLogin(), player.optedOutUntil(),
+            player.tyrantClass(), player.followerOf(), cooldowns, ready,
+            player.capturedMobs()
+        );
+    }
+}

src/main/java/games/dmg/spigottyrant/AbilityUseResult.java

@@ -0,0 +1,4 @@
+package games.dmg.spigottyrant;
+
+public record AbilityUseResult(PlayerState player, AbilityUseStatus status) {
+}

src/main/java/games/dmg/spigottyrant/AbilityUseStatus.java

@@ -0,0 +1,10 @@
+package games.dmg.spigottyrant;
+
+public enum AbilityUseStatus {
+    ACTIVATED,
+    WRONG_CLASS,
+    NOT_READY,
+    COOLDOWN,
+    GAME_NOT_RUNNING,
+    WRONG_OWNER
+}

src/main/java/games/dmg/spigottyrant/AssassinAbilityService.java

@@ -0,0 +1,88 @@
+package games.dmg.spigottyrant;
+
+import java.time.Instant;
+import java.util.EnumMap;
+import java.util.Map;
+
+public final class AssassinAbilityService {
+    private final AbilityReadinessService readiness;
+    private final PluginSettings settings;
+
+    public AssassinAbilityService(
+        AbilityReadinessService readiness,
+        PluginSettings settings
+    ) {
+        this.readiness = readiness;
+        this.settings = settings;
+    }
+
+    public AbilityUseResult activateInvisibility(
+        PlayerState player,
+        Instant now,
+        boolean nearTyrant
+    ) {
+        if (player.tyrantClass() != TyrantClass.ASSASSIN) {
+            return new AbilityUseResult(player, AbilityUseStatus.WRONG_CLASS);
+        }
+        if (!player.readyAbilityItems().contains(Ability.ASSASSIN_INVISIBILITY)) {
+            return new AbilityUseResult(player, AbilityUseStatus.NOT_READY);
+        }
+        PlayerState used = readiness.consume(
+            player, Ability.ASSASSIN_INVISIBILITY, now, settings.assassinCooldown()
+        );
+        Instant activeUntil = now.plus(
+            nearTyrant
+                ? settings.assassinInvisibilityDuration().multipliedBy(2)
+                : settings.assassinInvisibilityDuration()
+        );
+        return new AbilityUseResult(
+            withDeadline(used, Ability.ASSASSIN_INVISIBILITY_ACTIVE, activeUntil),
+            AbilityUseStatus.ACTIVATED
+        );
+    }
+
+    public AbilityUseResult doubleJump(PlayerState player, Instant now) {
+        if (player.tyrantClass() != TyrantClass.ASSASSIN) {
+            return new AbilityUseResult(player, AbilityUseStatus.WRONG_CLASS);
+        }
+        if (player.cooldownEnds().getOrDefault(
+                Ability.ASSASSIN_DOUBLE_JUMP, Instant.MIN
+            ).isAfter(now)) {
+            return new AbilityUseResult(player, AbilityUseStatus.COOLDOWN);
+        }
+        Map<Ability, Instant> deadlines = new EnumMap<>(Ability.class);
+        deadlines.putAll(player.cooldownEnds());
+        deadlines.put(
+            Ability.ASSASSIN_DOUBLE_JUMP,
+            now.plus(settings.assassinDoubleJumpCooldown())
+        );
+        deadlines.put(
+            Ability.ASSASSIN_SPEED_ACTIVE,
+            now.plus(settings.assassinSpeedDuration())
+        );
+        deadlines.put(
+            Ability.ASSASSIN_WEAKNESS_ACTIVE,
+            now.plus(settings.assassinWeaknessDuration())
+        );
+        return new AbilityUseResult(copy(player, deadlines), AbilityUseStatus.ACTIVATED);
+    }
+
+    private static PlayerState withDeadline(
+        PlayerState player,
+        Ability ability,
+        Instant deadline
+    ) {
+        Map<Ability, Instant> deadlines = new EnumMap<>(Ability.class);
+        deadlines.putAll(player.cooldownEnds());
+        deadlines.put(ability, deadline);
+        return copy(player, deadlines);
+    }
+
+    private static PlayerState copy(PlayerState player, Map<Ability, Instant> deadlines) {
+        return new PlayerState(
+            player.playerId(), player.latestName(), player.lastLogin(), player.optedOutUntil(),
+            player.tyrantClass(), player.followerOf(), deadlines,
+            player.readyAbilityItems(), player.capturedMobs()
+        );
+    }
+}

src/main/java/games/dmg/spigottyrant/AssassinEffectController.java

@@ -0,0 +1,142 @@
+package games.dmg.spigottyrant;
+
+import java.time.Clock;
+import java.time.Instant;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
+import org.bukkit.GameMode;
+import org.bukkit.Server;
+import org.bukkit.entity.Player;
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
+
+public final class AssassinEffectController implements Runnable {
+    private static final int EFFECT_TICKS = 30;
+    private final TyrantStateManager stateManager;
+    private final Server server;
+    private final PluginSettings settings;
+    private final Clock clock;
+    private final EffectApplier effectApplier;
+    private final Set<UUID> grantedFlight = new HashSet<>();
+
+    public AssassinEffectController(
+        TyrantStateManager stateManager,
+        Server server,
+        PluginSettings settings,
+        Clock clock
+    ) {
+        this(stateManager, server, settings, clock, new BukkitEffectApplier());
+    }
+
+    AssassinEffectController(
+        TyrantStateManager stateManager,
+        Server server,
+        PluginSettings settings,
+        Clock clock,
+        EffectApplier effectApplier
+    ) {
+        this.stateManager = Objects.requireNonNull(stateManager, "stateManager");
+        this.server = Objects.requireNonNull(server, "server");
+        this.settings = Objects.requireNonNull(settings, "settings");
+        this.clock = Objects.requireNonNull(clock, "clock");
+        this.effectApplier = Objects.requireNonNull(effectApplier, "effectApplier");
+    }
+
+    @Override
+    public void run() {
+        Instant now = clock.instant();
+        for (Player player : server.getOnlinePlayers()) {
+            PlayerState state = stateManager.player(player.getUniqueId(), player.getName());
+            if (stateManager.game().lifecycle() != GameLifecycle.RUNNING
+                    || state.tyrantClass() != TyrantClass.ASSASSIN) {
+                clear(player);
+                continue;
+            }
+            applyWhileActive(
+                player, state, Ability.ASSASSIN_INVISIBILITY_ACTIVE,
+                EffectKind.INVISIBILITY, 0, false
+            );
+            applyWhileActive(
+                player, state, Ability.ASSASSIN_SPEED_ACTIVE,
+                EffectKind.SPEED, 0, true
+            );
+            applyWhileActive(
+                player, state, Ability.ASSASSIN_WEAKNESS_ACTIVE,
+                EffectKind.WEAKNESS, settings.assassinWeaknessLevel() - 1, true
+            );
+            boolean jumpReady = !state.cooldownEnds().getOrDefault(
+                Ability.ASSASSIN_DOUBLE_JUMP, Instant.MIN
+            ).isAfter(now);
+            if (jumpReady && isGrounded(player) && isSurvivalLike(player)) {
+                player.setAllowFlight(true);
+                grantedFlight.add(player.getUniqueId());
+            }
+        }
+    }
+
+    public void clearAll() {
+        server.getOnlinePlayers().forEach(this::clear);
+    }
+
+    private void applyWhileActive(
+        Player player,
+        PlayerState state,
+        Ability ability,
+        EffectKind effect,
+        int amplifier,
+        boolean particles
+    ) {
+        if (state.cooldownEnds().getOrDefault(ability, Instant.MIN).isAfter(clock.instant())) {
+            effectApplier.apply(player, effect, amplifier, particles);
+        }
+    }
+
+    private void clear(Player player) {
+        if (grantedFlight.remove(player.getUniqueId()) && isSurvivalLike(player)) {
+            player.setAllowFlight(false);
+            player.setFlying(false);
+        }
+    }
+
+    enum EffectKind {
+        INVISIBILITY,
+        SPEED,
+        WEAKNESS
+    }
+
+    @FunctionalInterface
+    interface EffectApplier {
+        void apply(Player player, EffectKind effect, int amplifier, boolean particles);
+    }
+
+    private static final class BukkitEffectApplier implements EffectApplier {
+        @Override
+        public void apply(
+            Player player,
+            EffectKind effect,
+            int amplifier,
+            boolean particles
+        ) {
+            PotionEffectType type = switch (effect) {
+                case INVISIBILITY -> PotionEffectType.INVISIBILITY;
+                case SPEED -> PotionEffectType.SPEED;
+                case WEAKNESS -> PotionEffectType.WEAKNESS;
+            };
+            player.addPotionEffect(new PotionEffect(
+                type, EFFECT_TICKS, amplifier, false, particles, true
+            ));
+        }
+    }
+
+    private static boolean isGrounded(Player player) {
+        return !player.getLocation().clone().subtract(0.0, 0.1, 0.0)
+            .getBlock().isPassable();
+    }
+
+    private static boolean isSurvivalLike(Player player) {
+        return player.getGameMode() != GameMode.CREATIVE
+            && player.getGameMode() != GameMode.SPECTATOR;
+    }
+}

src/main/java/games/dmg/spigottyrant/AssassinItemListener.java

@@ -0,0 +1,79 @@
+package games.dmg.spigottyrant;
+
+import java.time.Clock;
+import java.util.Optional;
+import java.util.UUID;
+import org.bukkit.ChatColor;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.block.Action;
+import org.bukkit.event.player.PlayerInteractEvent;
+
+public final class AssassinItemListener implements Listener {
+    private final TyrantStateManager stateManager;
+    private final AbilityItemService items;
+    private final AssassinAbilityService abilities;
+    private final PluginSettings settings;
+    private final Clock clock;
+
+    public AssassinItemListener(
+        TyrantStateManager stateManager,
+        AbilityItemService items,
+        AssassinAbilityService abilities,
+        PluginSettings settings,
+        Clock clock
+    ) {
+        this.stateManager = stateManager;
+        this.items = items;
+        this.abilities = abilities;
+        this.settings = settings;
+        this.clock = clock;
+    }
+
+    @EventHandler(priority = EventPriority.HIGH)
+    public void onInteract(PlayerInteractEvent event) {
+        Action action = event.getAction();
+        if (action != Action.RIGHT_CLICK_AIR && action != Action.RIGHT_CLICK_BLOCK
+                && action != Action.LEFT_CLICK_AIR && action != Action.LEFT_CLICK_BLOCK) {
+            return;
+        }
+        if (items.ability(event.getItem())
+                .filter(Ability.ASSASSIN_INVISIBILITY::equals).isEmpty()) {
+            return;
+        }
+        event.setCancelled(true);
+        UUID playerId = event.getPlayer().getUniqueId();
+        if (items.owner(event.getItem()).filter(playerId::equals).isEmpty()) {
+            event.getPlayer().getInventory().setItem(event.getHand(), null);
+            event.getPlayer().sendMessage(ChatColor.RED + "That ability item is not yours.");
+            return;
+        }
+        if (stateManager.game().lifecycle() != GameLifecycle.RUNNING) {
+            event.getPlayer().sendMessage(ChatColor.RED + "The Tyrant game is not running.");
+            return;
+        }
+        PlayerState player = stateManager.player(playerId, event.getPlayer().getName());
+        AbilityUseResult result = abilities.activateInvisibility(
+            player, clock.instant(), isNearTyrant(event.getPlayer())
+        );
+        if (result.status() == AbilityUseStatus.ACTIVATED) {
+            stateManager.updatePlayer(playerId, event.getPlayer().getName(), current -> result.player());
+            stateManager.saveIfDirty();
+            event.getPlayer().getInventory().setItem(event.getHand(), null);
+            event.getPlayer().sendMessage(ChatColor.GREEN + "Invisibility activated.");
+        } else {
+            event.getPlayer().sendMessage(ChatColor.RED + "Ability unavailable: "
+                + result.status().name().toLowerCase(java.util.Locale.ROOT) + ".");
+        }
+    }
+
+    private boolean isNearTyrant(org.bukkit.entity.Player player) {
+        Optional<org.bukkit.entity.Player> tyrant = stateManager.game().tyrantId()
+            .map(org.bukkit.Bukkit::getPlayer);
+        return tyrant.isPresent()
+            && tyrant.orElseThrow().getWorld().equals(player.getWorld())
+            && tyrant.orElseThrow().getLocation().distanceSquared(player.getLocation())
+                <= settings.tyrantRangeBlocks() * settings.tyrantRangeBlocks();
+    }
+}

src/main/java/games/dmg/spigottyrant/AssassinJumpListener.java

@@ -0,0 +1,55 @@
+package games.dmg.spigottyrant;
+
+import java.time.Clock;
+import org.bukkit.ChatColor;
+import org.bukkit.GameMode;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerToggleFlightEvent;
+import org.bukkit.util.Vector;
+
+public final class AssassinJumpListener implements Listener {
+    private final TyrantStateManager stateManager;
+    private final AssassinAbilityService abilities;
+    private final Clock clock;
+
+    public AssassinJumpListener(
+        TyrantStateManager stateManager,
+        AssassinAbilityService abilities,
+        Clock clock
+    ) {
+        this.stateManager = stateManager;
+        this.abilities = abilities;
+        this.clock = clock;
+    }
+
+    @EventHandler
+    public void onToggleFlight(PlayerToggleFlightEvent event) {
+        if (event.getPlayer().getGameMode() == GameMode.CREATIVE
+                || event.getPlayer().getGameMode() == GameMode.SPECTATOR) {
+            return;
+        }
+        PlayerState state = stateManager.player(
+            event.getPlayer().getUniqueId(), event.getPlayer().getName()
+        );
+        if (stateManager.game().lifecycle() != GameLifecycle.RUNNING
+                || state.tyrantClass() != TyrantClass.ASSASSIN) {
+            return;
+        }
+        event.setCancelled(true);
+        event.getPlayer().setFlying(false);
+        event.getPlayer().setAllowFlight(false);
+        AbilityUseResult result = abilities.doubleJump(state, clock.instant());
+        if (result.status() != AbilityUseStatus.ACTIVATED) {
+            event.getPlayer().sendMessage(ChatColor.RED + "Double jump is cooling down.");
+            return;
+        }
+        stateManager.updatePlayer(
+            event.getPlayer().getUniqueId(), event.getPlayer().getName(),
+            current -> result.player()
+        );
+        stateManager.saveIfDirty();
+        Vector velocity = event.getPlayer().getVelocity();
+        event.getPlayer().setVelocity(velocity.setY(Math.max(0.8, velocity.getY())));
+    }
+}

src/main/java/games/dmg/spigottyrant/BoundItemListener.java

@@ -0,0 +1,83 @@
+package games.dmg.spigottyrant;
+
+import org.bukkit.entity.ItemFrame;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.block.BlockDispenseEvent;
+import org.bukkit.event.block.BlockPlaceEvent;
+import org.bukkit.event.entity.EntityPickupItemEvent;
+import org.bukkit.event.entity.PlayerDeathEvent;
+import org.bukkit.event.inventory.InventoryClickEvent;
+import org.bukkit.event.player.PlayerDropItemEvent;
+import org.bukkit.event.player.PlayerInteractEntityEvent;
+import org.bukkit.inventory.ItemStack;
+
+public final class BoundItemListener implements Listener {
+    private final AbilityItemService items;
+
+    public BoundItemListener(AbilityItemService items) {
+        this.items = items;
+    }
+
+    @EventHandler
+    public void onDrop(PlayerDropItemEvent event) {
+        if (items.isBoundAbilityItem(event.getItemDrop().getItemStack())) {
+            event.getItemDrop().remove();
+        }
+    }
+
+    @EventHandler
+    public void onPickup(EntityPickupItemEvent event) {
+        if (!(event.getEntity() instanceof Player player)) {
+            return;
+        }
+        ItemStack item = event.getItem().getItemStack();
+        if (items.isBoundAbilityItem(item)
+                && items.owner(item).filter(player.getUniqueId()::equals).isEmpty()) {
+            event.setCancelled(true);
+            event.getItem().remove();
+        }
+    }
+
+    @EventHandler
+    public void onInventoryClick(InventoryClickEvent event) {
+        if (items.isBoundAbilityItem(event.getCurrentItem())
+                || items.isBoundAbilityItem(event.getCursor())) {
+            if (!(event.getWhoClicked() instanceof Player player)
+                    || event.isShiftClick()
+                    || event.getClickedInventory() == null
+                    || !event.getClickedInventory().equals(player.getInventory())) {
+                event.setCancelled(true);
+            }
+        }
+    }
+
+    @EventHandler
+    public void onPlace(BlockPlaceEvent event) {
+        if (items.isBoundAbilityItem(event.getItemInHand())) {
+            event.setCancelled(true);
+        }
+    }
+
+    @EventHandler
+    public void onDispense(BlockDispenseEvent event) {
+        if (items.isBoundAbilityItem(event.getItem())) {
+            event.setCancelled(true);
+        }
+    }
+
+    @EventHandler
+    public void onFrame(PlayerInteractEntityEvent event) {
+        if (event.getRightClicked() instanceof ItemFrame
+                && items.isBoundAbilityItem(event.getPlayer().getInventory()
+                    .getItem(event.getHand()))) {
+            event.setCancelled(true);
+        }
+    }
+
+    @EventHandler
+    public void onDeath(PlayerDeathEvent event) {
+        event.getDrops().removeIf(items::isBoundAbilityItem);
+    }
+}

src/main/java/games/dmg/spigottyrant/BukkitAbilityItemService.java

@@ -0,0 +1,158 @@
+package games.dmg.spigottyrant;
+
+import java.util.Locale;
+import java.util.Map;
+import java.util.Optional;
+import java.util.UUID;
+import org.bukkit.ChatColor;
+import org.bukkit.Material;
+import org.bukkit.NamespacedKey;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.bukkit.persistence.PersistentDataType;
+import org.bukkit.plugin.Plugin;
+
+public final class BukkitAbilityItemService implements AbilityItemService {
+    private final NamespacedKey abilityKey;
+    private final NamespacedKey ownerKey;
+    private final PluginSettings settings;
+
+    public BukkitAbilityItemService(Plugin plugin, PluginSettings settings) {
+        abilityKey = new NamespacedKey(plugin, "ability");
+        ownerKey = new NamespacedKey(plugin, "owner");
+        this.settings = settings;
+    }
+
+    @Override
+    public void recover(Player player, PlayerState state) {
+        for (Ability ability : state.readyAbilityItems()) {
+            if (!isItemAbilityForClass(ability, state.tyrantClass())
+                    || contains(player, state.playerId(), ability)) {
+                continue;
+            }
+            ItemStack item = create(state.playerId(), ability);
+            Map<Integer, ItemStack> leftovers = player.getInventory().addItem(item);
+            if (!leftovers.isEmpty()) {
+                player.sendMessage(ChatColor.RED + settings.inventoryFullMessage());
+            }
+        }
+    }
+
+    @Override
+    public boolean isBoundAbilityItem(ItemStack item) {
+        return ability(item).isPresent() && owner(item).isPresent();
+    }
+
+    @Override
+    public Optional<Ability> ability(ItemStack item) {
+        if (item == null || !item.hasItemMeta()) {
+            return Optional.empty();
+        }
+        String value = item.getItemMeta().getPersistentDataContainer()
+            .get(abilityKey, PersistentDataType.STRING);
+        if (value == null) {
+            return Optional.empty();
+        }
+        try {
+            return Optional.of(Ability.valueOf(value));
+        } catch (IllegalArgumentException exception) {
+            return Optional.empty();
+        }
+    }
+
+    @Override
+    public Optional<UUID> owner(ItemStack item) {
+        if (item == null || !item.hasItemMeta()) {
+            return Optional.empty();
+        }
+        String value = item.getItemMeta().getPersistentDataContainer()
+            .get(ownerKey, PersistentDataType.STRING);
+        if (value == null) {
+            return Optional.empty();
+        }
+        try {
+            return Optional.of(UUID.fromString(value));
+        } catch (IllegalArgumentException exception) {
+            return Optional.empty();
+        }
+    }
+
+    @Override
+    public void removeInvalid(Player player, PlayerState state) {
+        ItemStack[] contents = player.getInventory().getContents();
+        java.util.Set<Ability> retained = java.util.EnumSet.noneOf(Ability.class);
+        for (int index = 0; index < contents.length; index++) {
+            ItemStack item = contents[index];
+            if (!isBoundAbilityItem(item)) {
+                continue;
+            }
+            Optional<Ability> itemAbility = ability(item);
+            boolean valid = owner(item).filter(state.playerId()::equals).isPresent()
+                && itemAbility.filter(state.readyAbilityItems()::contains).isPresent()
+                && itemAbility.filter(retained::add).isPresent();
+            if (!valid) {
+                player.getInventory().setItem(index, null);
+            }
+        }
+    }
+
+    @Override
+    public void removeAll(Player player) {
+        ItemStack[] contents = player.getInventory().getContents();
+        for (int index = 0; index < contents.length; index++) {
+            if (isBoundAbilityItem(contents[index])) {
+                player.getInventory().setItem(index, null);
+            }
+        }
+    }
+
+    private ItemStack create(UUID ownerId, Ability ability) {
+        PluginSettings.AbilityItemSettings configured = settingsFor(ability);
+        Material material = Material.matchMaterial(configured.material());
+        if (material == null) {
+            throw new IllegalStateException("Configured item material is unavailable");
+        }
+        ItemStack item = new ItemStack(material);
+        ItemMeta meta = item.getItemMeta();
+        meta.setDisplayName(ChatColor.GOLD + configured.name());
+        meta.getPersistentDataContainer().set(
+            abilityKey, PersistentDataType.STRING, ability.name()
+        );
+        meta.getPersistentDataContainer().set(
+            ownerKey, PersistentDataType.STRING, ownerId.toString()
+        );
+        item.setItemMeta(meta);
+        return item;
+    }
+
+    private boolean contains(Player player, UUID ownerId, Ability ability) {
+        for (ItemStack item : player.getInventory().getContents()) {
+            if (owner(item).filter(ownerId::equals).isPresent()
+                    && ability(item).filter(ability::equals).isPresent()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private PluginSettings.AbilityItemSettings settingsFor(Ability ability) {
+        return switch (ability) {
+            case ASSASSIN_INVISIBILITY -> settings.assassinItem();
+            case FIXER_BOOST -> settings.fixerItem();
+            case TAMER_CAPTURE -> settings.tamerItem();
+            default -> throw new IllegalArgumentException(
+                ability.name().toLowerCase(Locale.ROOT) + " has no class item"
+            );
+        };
+    }
+
+    private static boolean isItemAbilityForClass(Ability ability, TyrantClass tyrantClass) {
+        return switch (tyrantClass) {
+            case ASSASSIN -> ability == Ability.ASSASSIN_INVISIBILITY;
+            case FIXER -> ability == Ability.FIXER_BOOST;
+            case TAMER -> ability == Ability.TAMER_CAPTURE;
+            case NONE -> false;
+        };
+    }
+}

src/main/java/games/dmg/spigottyrant/BukkitCapturedMobItemService.java

@@ -0,0 +1,79 @@
+package games.dmg.spigottyrant;
+
+import java.util.Optional;
+import java.util.UUID;
+import org.bukkit.ChatColor;
+import org.bukkit.Material;
+import org.bukkit.NamespacedKey;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.bukkit.persistence.PersistentDataType;
+import org.bukkit.plugin.Plugin;
+
+public final class BukkitCapturedMobItemService implements CapturedMobItemService {
+    private final NamespacedKey ownerKey;
+    private final NamespacedKey captureKey;
+    private final NamespacedKey typeKey;
+    private final PluginSettings settings;
+
+    public BukkitCapturedMobItemService(Plugin plugin, PluginSettings settings) {
+        ownerKey = new NamespacedKey(plugin, "captured-owner");
+        captureKey = new NamespacedKey(plugin, "captured-id");
+        typeKey = new NamespacedKey(plugin, "captured-type");
+        this.settings = settings;
+    }
+
+    @Override
+    public ItemStack create(UUID ownerId, UUID captureId, String entityType) {
+        Material material = Material.matchMaterial(settings.capturedMobItem().material());
+        if (material == null) {
+            throw new IllegalStateException("Captured mob item material is unavailable");
+        }
+        ItemStack item = new ItemStack(material);
+        ItemMeta meta = item.getItemMeta();
+        meta.setDisplayName(ChatColor.GOLD + settings.capturedMobItem().name()
+            + ": " + entityType);
+        meta.getPersistentDataContainer().set(
+            ownerKey, PersistentDataType.STRING, ownerId.toString()
+        );
+        meta.getPersistentDataContainer().set(
+            captureKey, PersistentDataType.STRING, captureId.toString()
+        );
+        meta.getPersistentDataContainer().set(
+            typeKey, PersistentDataType.STRING, entityType
+        );
+        item.setItemMeta(meta);
+        return item;
+    }
+
+    @Override
+    public boolean isCapturedMob(ItemStack item) {
+        return owner(item).isPresent() && captureId(item).isPresent();
+    }
+
+    @Override
+    public Optional<UUID> owner(ItemStack item) {
+        return uuid(item, ownerKey);
+    }
+
+    @Override
+    public Optional<UUID> captureId(ItemStack item) {
+        return uuid(item, captureKey);
+    }
+
+    private static Optional<UUID> uuid(ItemStack item, NamespacedKey key) {
+        if (item == null || !item.hasItemMeta()) {
+            return Optional.empty();
+        }
+        String value = item.getItemMeta().getPersistentDataContainer()
+            .get(key, PersistentDataType.STRING);
+        if (value == null) {
+            return Optional.empty();
+        }
+        try {
+            return Optional.of(UUID.fromString(value));
+        } catch (IllegalArgumentException exception) {
+            return Optional.empty();
+        }
+    }
+}

src/main/java/games/dmg/spigottyrant/CapturedMobInventoryService.java

@@ -0,0 +1,61 @@
+package games.dmg.spigottyrant;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+import org.bukkit.ChatColor;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+
+public final class CapturedMobInventoryService {
+    private final CapturedMobItemService items;
+    private final PluginSettings settings;
+
+    public CapturedMobInventoryService(
+        CapturedMobItemService items,
+        PluginSettings settings
+    ) {
+        this.items = items;
+        this.settings = settings;
+    }
+
+    public void reconcile(Player player, PlayerState state) {
+        Map<UUID, CapturedMob> stored = new java.util.HashMap<>();
+        for (CapturedMob mob : state.capturedMobs()) {
+            try {
+                UUID captureId = UUID.fromString(mob.data().get("capture-id"));
+                stored.putIfAbsent(captureId, mob);
+            } catch (IllegalArgumentException | NullPointerException ignored) {
+                // Invalid custody records are not materialized as items.
+            }
+        }
+        Set<UUID> retained = new HashSet<>();
+        ItemStack[] contents = player.getInventory().getContents();
+        for (int index = 0; index < contents.length; index++) {
+            ItemStack item = contents[index];
+            if (!items.isCapturedMob(item)) {
+                continue;
+            }
+            UUID captureId = items.captureId(item).orElseThrow();
+            boolean valid = items.owner(item).filter(state.playerId()::equals).isPresent()
+                && stored.containsKey(captureId) && retained.add(captureId);
+            if (!valid) {
+                player.getInventory().setItem(index, null);
+            }
+        }
+        for (Map.Entry<UUID, CapturedMob> entry : stored.entrySet()) {
+            if (retained.contains(entry.getKey())) {
+                continue;
+            }
+            Map<Integer, ItemStack> leftovers = player.getInventory().addItem(
+                items.create(
+                    state.playerId(), entry.getKey(), entry.getValue().entityType()
+                )
+            );
+            if (!leftovers.isEmpty()) {
+                player.sendMessage(ChatColor.RED + settings.inventoryFullMessage());
+            }
+        }
+    }
+}

src/main/java/games/dmg/spigottyrant/CapturedMobItemService.java

@@ -0,0 +1,15 @@
+package games.dmg.spigottyrant;
+
+import java.util.Optional;
+import java.util.UUID;
+import org.bukkit.inventory.ItemStack;
+
+public interface CapturedMobItemService {
+    ItemStack create(UUID ownerId, UUID captureId, String entityType);
+
+    boolean isCapturedMob(ItemStack item);
+
+    Optional<UUID> owner(ItemStack item);
+
+    Optional<UUID> captureId(ItemStack item);
+}

src/main/java/games/dmg/spigottyrant/CapturedMobService.java

@@ -0,0 +1,53 @@
+package games.dmg.spigottyrant;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.UUID;
+
+public final class CapturedMobService {
+    public PlayerState capture(
+        PlayerState player,
+        UUID captureId,
+        String entityType,
+        String snapshot
+    ) {
+        if (player.tyrantClass() != TyrantClass.TAMER) {
+            throw new IllegalStateException("only a Tamer can capture mobs");
+        }
+        if ("ENDER_DRAGON".equalsIgnoreCase(entityType)) {
+            throw new IllegalArgumentException("Ender Dragons cannot be captured");
+        }
+        List<CapturedMob> mobs = new ArrayList<>(player.capturedMobs());
+        mobs.add(new CapturedMob(entityType, Map.of(
+            "capture-id", captureId.toString(),
+            "snapshot", snapshot
+        )));
+        return copy(player, mobs);
+    }
+
+    public Optional<CapturedMob> find(PlayerState player, UUID captureId) {
+        return player.capturedMobs().stream()
+            .filter(mob -> captureId.toString().equals(mob.data().get("capture-id")))
+            .findFirst();
+    }
+
+    public PlayerState release(PlayerState player, UUID captureId) {
+        if (find(player, captureId).isEmpty()) {
+            return player;
+        }
+        List<CapturedMob> mobs = player.capturedMobs().stream()
+            .filter(mob -> !captureId.toString().equals(mob.data().get("capture-id")))
+            .toList();
+        return copy(player, mobs);
+    }
+
+    private static PlayerState copy(PlayerState player, List<CapturedMob> mobs) {
+        return new PlayerState(
+            player.playerId(), player.latestName(), player.lastLogin(), player.optedOutUntil(),
+            player.tyrantClass(), player.followerOf(), player.cooldownEnds(),
+            player.readyAbilityItems(), mobs
+        );
+    }
+}

src/main/java/games/dmg/spigottyrant/ClassAssignmentService.java

@@ -102,6 +102,7 @@ public final class ClassAssignmentService {
             cooldowns.remove(ability);
             readyItems.remove(ability);
         }
+        readyItemFor(tyrantClass).ifPresent(readyItems::add);
         return new PlayerState(
             player.playerId(),
             player.latestName(),
@@ -115,6 +116,15 @@ public final class ClassAssignmentService {
         );
     }
 
+    private static Optional<Ability> readyItemFor(TyrantClass tyrantClass) {
+        return switch (tyrantClass) {
+            case ASSASSIN -> Optional.of(Ability.ASSASSIN_INVISIBILITY);
+            case FIXER -> Optional.of(Ability.FIXER_BOOST);
+            case TAMER -> Optional.of(Ability.TAMER_CAPTURE);
+            case NONE -> Optional.empty();
+        };
+    }
+
     private static Set<Ability> abilitiesFor(TyrantClass tyrantClass) {
         return switch (tyrantClass) {
             case ASSASSIN -> Set.of(

src/main/java/games/dmg/spigottyrant/FixerAbilityService.java

@@ -0,0 +1,45 @@
+package games.dmg.spigottyrant;
+
+import java.time.Instant;
+import java.util.EnumMap;
+import java.util.Map;
+
+public final class FixerAbilityService {
+    private final AbilityReadinessService readiness;
+    private final PluginSettings settings;
+
+    public FixerAbilityService(
+        AbilityReadinessService readiness,
+        PluginSettings settings
+    ) {
+        this.readiness = readiness;
+        this.settings = settings;
+    }
+
+    public FixerUseResult activate(PlayerState player, Instant now, boolean nearTyrant) {
+        if (player.tyrantClass() != TyrantClass.FIXER) {
+            return new FixerUseResult(player, AbilityUseStatus.WRONG_CLASS, 0);
+        }
+        if (!player.readyAbilityItems().contains(Ability.FIXER_BOOST)) {
+            return new FixerUseResult(player, AbilityUseStatus.NOT_READY, 0);
+        }
+        PlayerState used = readiness.consume(
+            player, Ability.FIXER_BOOST, now, settings.fixerCooldown()
+        );
+        Instant activeUntil = now.plus(settings.fixerEffectDuration());
+        Map<Ability, Instant> deadlines = new EnumMap<>(Ability.class);
+        deadlines.putAll(used.cooldownEnds());
+        deadlines.put(Ability.FIXER_BOOST_ACTIVE, activeUntil);
+        if (nearTyrant) {
+            deadlines.put(Ability.FIXER_NEAR_TYRANT_ACTIVE, activeUntil);
+        }
+        PlayerState updated = new PlayerState(
+            used.playerId(), used.latestName(), used.lastLogin(), used.optedOutUntil(),
+            used.tyrantClass(), used.followerOf(), deadlines, used.readyAbilityItems(),
+            used.capturedMobs()
+        );
+        int rows = nearTyrant
+            ? settings.fixerNearTyrantHeartRows() : settings.fixerNormalHeartRows();
+        return new FixerUseResult(updated, AbilityUseStatus.ACTIVATED, rows);
+    }
+}

src/main/java/games/dmg/spigottyrant/FixerEffectController.java

@@ -0,0 +1,87 @@
+package games.dmg.spigottyrant;
+
+import java.time.Clock;
+import java.time.Instant;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
+import org.bukkit.Server;
+import org.bukkit.attribute.Attribute;
+import org.bukkit.attribute.AttributeInstance;
+import org.bukkit.entity.Player;
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
+
+public final class FixerEffectController implements Runnable {
+    private static final int EFFECT_TICKS = 30;
+    private final TyrantStateManager stateManager;
+    private final Server server;
+    private final PluginSettings settings;
+    private final Clock clock;
+    private final Set<UUID> managedPlayers = new HashSet<>();
+
+    public FixerEffectController(
+        TyrantStateManager stateManager,
+        Server server,
+        PluginSettings settings,
+        Clock clock
+    ) {
+        this.stateManager = stateManager;
+        this.server = server;
+        this.settings = settings;
+        this.clock = clock;
+    }
+
+    @Override
+    public void run() {
+        Instant now = clock.instant();
+        for (Player player : server.getOnlinePlayers()) {
+            PlayerState state = stateManager.player(player.getUniqueId(), player.getName());
+            boolean active = stateManager.game().lifecycle() == GameLifecycle.RUNNING
+                && state.tyrantClass() == TyrantClass.FIXER
+                && state.cooldownEnds().getOrDefault(
+                    Ability.FIXER_BOOST_ACTIVE, Instant.MIN
+                ).isAfter(now);
+            if (!active) {
+                if (managedPlayers.remove(player.getUniqueId())) {
+                    clear(player);
+                }
+                continue;
+            }
+            managedPlayers.add(player.getUniqueId());
+            boolean nearTier = state.cooldownEnds().getOrDefault(
+                Ability.FIXER_NEAR_TYRANT_ACTIVE, Instant.MIN
+            ).isAfter(now);
+            int rows = nearTier
+                ? settings.fixerNearTyrantHeartRows() : settings.fixerNormalHeartRows();
+            int healthBoostAmplifier = (rows - 1) * 5 - 1;
+            player.addPotionEffect(new PotionEffect(
+                PotionEffectType.STRENGTH, EFFECT_TICKS,
+                settings.fixerStrengthLevel() - 1, false, true, true
+            ));
+            player.addPotionEffect(new PotionEffect(
+                PotionEffectType.HEALTH_BOOST, EFFECT_TICKS,
+                healthBoostAmplifier, false, true, true
+            ));
+        }
+    }
+
+    public void clearAll() {
+        for (UUID playerId : Set.copyOf(managedPlayers)) {
+            Player player = server.getPlayer(playerId);
+            if (player != null) {
+                clear(player);
+            }
+        }
+        managedPlayers.clear();
+    }
+
+    private static void clear(Player player) {
+        player.removePotionEffect(PotionEffectType.STRENGTH);
+        player.removePotionEffect(PotionEffectType.HEALTH_BOOST);
+        AttributeInstance maximumHealth = player.getAttribute(Attribute.MAX_HEALTH);
+        if (maximumHealth != null && player.getHealth() > maximumHealth.getValue()) {
+            player.setHealth(maximumHealth.getValue());
+        }
+    }
+}

src/main/java/games/dmg/spigottyrant/FixerItemListener.java

@@ -0,0 +1,79 @@
+package games.dmg.spigottyrant;
+
+import java.time.Clock;
+import java.util.Optional;
+import java.util.UUID;
+import org.bukkit.ChatColor;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.block.Action;
+import org.bukkit.event.player.PlayerInteractEvent;
+
+public final class FixerItemListener implements Listener {
+    private final TyrantStateManager stateManager;
+    private final AbilityItemService items;
+    private final FixerAbilityService abilities;
+    private final PluginSettings settings;
+    private final Clock clock;
+
+    public FixerItemListener(
+        TyrantStateManager stateManager,
+        AbilityItemService items,
+        FixerAbilityService abilities,
+        PluginSettings settings,
+        Clock clock
+    ) {
+        this.stateManager = stateManager;
+        this.items = items;
+        this.abilities = abilities;
+        this.settings = settings;
+        this.clock = clock;
+    }
+
+    @EventHandler(priority = EventPriority.HIGH)
+    public void onInteract(PlayerInteractEvent event) {
+        Action action = event.getAction();
+        if (action != Action.RIGHT_CLICK_AIR && action != Action.RIGHT_CLICK_BLOCK
+                && action != Action.LEFT_CLICK_AIR && action != Action.LEFT_CLICK_BLOCK) {
+            return;
+        }
+        if (items.ability(event.getItem()).filter(Ability.FIXER_BOOST::equals).isEmpty()) {
+            return;
+        }
+        event.setCancelled(true);
+        UUID playerId = event.getPlayer().getUniqueId();
+        if (items.owner(event.getItem()).filter(playerId::equals).isEmpty()) {
+            event.getPlayer().getInventory().setItem(event.getHand(), null);
+            event.getPlayer().sendMessage(ChatColor.RED + "That ability item is not yours.");
+            return;
+        }
+        if (stateManager.game().lifecycle() != GameLifecycle.RUNNING) {
+            event.getPlayer().sendMessage(ChatColor.RED + "The Tyrant game is not running.");
+            return;
+        }
+        PlayerState player = stateManager.player(playerId, event.getPlayer().getName());
+        FixerUseResult result = abilities.activate(
+            player, clock.instant(), isNearTyrant(event.getPlayer())
+        );
+        if (result.status() == AbilityUseStatus.ACTIVATED) {
+            stateManager.updatePlayer(playerId, event.getPlayer().getName(), current -> result.player());
+            stateManager.saveIfDirty();
+            event.getPlayer().getInventory().setItem(event.getHand(), null);
+            event.getPlayer().sendMessage(ChatColor.GREEN + "Fixer boost activated with "
+                + result.heartRows() + " rows of hearts.");
+        } else {
+            event.getPlayer().sendMessage(ChatColor.RED + "Ability unavailable: "
+                + result.status().name().toLowerCase(java.util.Locale.ROOT) + ".");
+        }
+    }
+
+    private boolean isNearTyrant(org.bukkit.entity.Player player) {
+        Optional<org.bukkit.entity.Player> tyrant = stateManager.game().tyrantId()
+            .map(org.bukkit.Bukkit::getPlayer);
+        return tyrant.isPresent()
+            && tyrant.orElseThrow().getWorld().equals(player.getWorld())
+            && tyrant.orElseThrow().getLocation().distanceSquared(player.getLocation())
+                <= settings.tyrantRangeBlocks() * settings.tyrantRangeBlocks();
+    }
+}

src/main/java/games/dmg/spigottyrant/FixerUseResult.java

@@ -0,0 +1,8 @@
+package games.dmg.spigottyrant;
+
+public record FixerUseResult(
+    PlayerState player,
+    AbilityUseStatus status,
+    int heartRows
+) {
+}

src/main/java/games/dmg/spigottyrant/FollowerResult.java

@@ -0,0 +1,10 @@
+package games.dmg.spigottyrant;
+
+import java.util.Map;
+import java.util.UUID;
+
+public record FollowerResult(Map<UUID, PlayerState> players, FollowerStatus status) {
+    public FollowerResult {
+        players = Map.copyOf(players);
+    }
+}

src/main/java/games/dmg/spigottyrant/FollowerService.java

@@ -0,0 +1,111 @@
+package games.dmg.spigottyrant;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+import java.util.UUID;
+
+public final class FollowerService {
+    private final Map<UUID, UUID> invitations = new HashMap<>();
+
+    public FollowerResult invite(
+        GameState game,
+        Map<UUID, PlayerState> players,
+        UUID vigilanteId,
+        UUID targetId
+    ) {
+        if (game.lifecycle() != GameLifecycle.RUNNING) {
+            return result(players, FollowerStatus.GAME_NOT_RUNNING);
+        }
+        if (game.vigilanteId().filter(vigilanteId::equals).isEmpty()) {
+            return result(players, FollowerStatus.NOT_VIGILANTE);
+        }
+        PlayerState target = players.get(targetId);
+        if (target == null || target.optedOutUntil().isPresent()
+                || game.tyrantId().filter(targetId::equals).isPresent()
+                || game.vigilanteId().filter(targetId::equals).isPresent()) {
+            return result(players, FollowerStatus.INELIGIBLE);
+        }
+        invitations.put(targetId, vigilanteId);
+        return result(players, FollowerStatus.INVITED);
+    }
+
+    public FollowerResult accept(
+        GameState game,
+        Map<UUID, PlayerState> players,
+        UUID targetId
+    ) {
+        UUID invitedBy = invitations.get(targetId);
+        if (invitedBy == null
+                || game.vigilanteId().filter(invitedBy::equals).isEmpty()) {
+            return result(players, FollowerStatus.NO_INVITATION);
+        }
+        PlayerState target = players.get(targetId);
+        if (target == null || target.optedOutUntil().isPresent()) {
+            invitations.remove(targetId);
+            return result(players, FollowerStatus.INELIGIBLE);
+        }
+        invitations.remove(targetId);
+        return updated(players, withFollower(target, Optional.of(invitedBy)), FollowerStatus.JOINED);
+    }
+
+    public FollowerResult dismiss(
+        GameState game,
+        Map<UUID, PlayerState> players,
+        UUID vigilanteId,
+        UUID targetId
+    ) {
+        if (game.vigilanteId().filter(vigilanteId::equals).isEmpty()) {
+            return result(players, FollowerStatus.NOT_VIGILANTE);
+        }
+        PlayerState target = players.get(targetId);
+        if (target == null || target.followerOf().filter(vigilanteId::equals).isEmpty()) {
+            return result(players, FollowerStatus.NOT_FOLLOWER);
+        }
+        return updated(players, withFollower(target, Optional.empty()), FollowerStatus.DISMISSED);
+    }
+
+    public FollowerResult leave(
+        GameState game,
+        Map<UUID, PlayerState> players,
+        UUID targetId
+    ) {
+        PlayerState target = players.get(targetId);
+        if (target == null || target.followerOf().isEmpty()) {
+            return result(players, FollowerStatus.NOT_FOLLOWER);
+        }
+        return updated(players, withFollower(target, Optional.empty()), FollowerStatus.LEFT);
+    }
+
+    public void clearInvitations() {
+        invitations.clear();
+    }
+
+    private static FollowerResult updated(
+        Map<UUID, PlayerState> players,
+        PlayerState updated,
+        FollowerStatus status
+    ) {
+        Map<UUID, PlayerState> replacement = new HashMap<>(players);
+        replacement.put(updated.playerId(), updated);
+        return result(replacement, status);
+    }
+
+    private static FollowerResult result(
+        Map<UUID, PlayerState> players,
+        FollowerStatus status
+    ) {
+        return new FollowerResult(players, status);
+    }
+
+    private static PlayerState withFollower(
+        PlayerState player,
+        Optional<UUID> followerOf
+    ) {
+        return new PlayerState(
+            player.playerId(), player.latestName(), player.lastLogin(), player.optedOutUntil(),
+            player.tyrantClass(), followerOf, player.cooldownEnds(),
+            player.readyAbilityItems(), player.capturedMobs()
+        );
+    }
+}

src/main/java/games/dmg/spigottyrant/FollowerStatus.java

@@ -0,0 +1,13 @@
+package games.dmg.spigottyrant;
+
+public enum FollowerStatus {
+    INVITED,
+    JOINED,
+    DISMISSED,
+    LEFT,
+    GAME_NOT_RUNNING,
+    NOT_VIGILANTE,
+    INELIGIBLE,
+    NO_INVITATION,
+    NOT_FOLLOWER
+}

src/main/java/games/dmg/spigottyrant/IntelligenceResult.java

@@ -0,0 +1,8 @@
+package games.dmg.spigottyrant;
+
+public record IntelligenceResult(
+    PlayerState tyrant,
+    AbilityUseStatus status,
+    int memberCount
+) {
+}

src/main/java/games/dmg/spigottyrant/OptOutGlowController.java

@@ -0,0 +1,127 @@
+package games.dmg.spigottyrant;
+
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
+import org.bukkit.ChatColor;
+import org.bukkit.Server;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerQuitEvent;
+import org.bukkit.scoreboard.Scoreboard;
+import org.bukkit.scoreboard.ScoreboardManager;
+import org.bukkit.scoreboard.Team;
+
+public final class OptOutGlowController implements Runnable, Listener {
+    private static final String TEAM_NAME = "tyrant-optout";
+    private final TyrantStateManager stateManager;
+    private final Server server;
+    private final PluginSettings settings;
+    private final Scoreboard scoreboard;
+    private final Team greenTeam;
+    private final Map<UUID, PreviousPresentation> managed = new HashMap<>();
+
+    public OptOutGlowController(
+        TyrantStateManager stateManager,
+        Server server,
+        PluginSettings settings
+    ) {
+        this.stateManager = stateManager;
+        this.server = server;
+        this.settings = settings;
+        ScoreboardManager manager = Objects.requireNonNull(
+            server.getScoreboardManager(), "Scoreboard manager is unavailable"
+        );
+        scoreboard = manager.getMainScoreboard();
+        Team existing = scoreboard.getTeam(TEAM_NAME);
+        greenTeam = existing == null ? scoreboard.registerNewTeam(TEAM_NAME) : existing;
+        greenTeam.setColor(ChatColor.GREEN);
+    }
+
+    @Override
+    public void run() {
+        GameState game = stateManager.game();
+        Player tyrant = game.tyrantId().map(server::getPlayer).orElse(null);
+        boolean tyrantAvailable = tyrant != null && !tyrant.isDead();
+        Set<UUID> online = new HashSet<>();
+        for (Player player : server.getOnlinePlayers()) {
+            online.add(player.getUniqueId());
+            PlayerState state = stateManager.players().get(player.getUniqueId());
+            boolean sameWorld = tyrantAvailable && !player.isDead()
+                && player.getWorld().equals(tyrant.getWorld());
+            double distanceSquared = sameWorld
+                ? player.getLocation().distanceSquared(tyrant.getLocation())
+                : Double.POSITIVE_INFINITY;
+            boolean shouldGlow = state != null && OptOutGlowPolicy.shouldGlow(
+                game, state, tyrantAvailable, sameWorld, distanceSquared,
+                settings.tyrantRangeBlocks()
+            );
+            if (shouldGlow && !managed.containsKey(player.getUniqueId())) {
+                apply(player);
+            } else if (!shouldGlow && managed.containsKey(player.getUniqueId())) {
+                restore(player.getUniqueId(), player);
+            }
+        }
+        for (UUID playerId : Set.copyOf(managed.keySet())) {
+            if (!online.contains(playerId) && server.getPlayer(playerId) == null) {
+                restore(playerId, null);
+            }
+        }
+    }
+
+    @EventHandler(priority = EventPriority.MONITOR)
+    public void onQuit(PlayerQuitEvent event) {
+        if (managed.containsKey(event.getPlayer().getUniqueId())) {
+            restore(event.getPlayer().getUniqueId(), event.getPlayer());
+        }
+    }
+
+    public void clearAll() {
+        for (UUID playerId : Set.copyOf(managed.keySet())) {
+            restore(playerId, server.getPlayer(playerId));
+        }
+    }
+
+    private void apply(Player player) {
+        Team previousTeam = scoreboard.getEntryTeam(player.getName());
+        if (previousTeam == greenTeam) {
+            previousTeam = null;
+        }
+        managed.put(
+            player.getUniqueId(),
+            new PreviousPresentation(player.getName(), previousTeam, player.isGlowing())
+        );
+        greenTeam.addEntry(player.getName());
+        player.setGlowing(true);
+    }
+
+    private void restore(UUID playerId, Player player) {
+        PreviousPresentation previous = managed.remove(playerId);
+        if (previous == null) {
+            return;
+        }
+        greenTeam.removeEntry(previous.playerName());
+        if (previous.team() != null) {
+            try {
+                previous.team().addEntry(previous.playerName());
+            } catch (IllegalStateException ignored) {
+                // The prior team was removed while this plugin managed the entry.
+            }
+        }
+        if (player != null) {
+            player.setGlowing(previous.glowing());
+        }
+    }
+
+    private record PreviousPresentation(
+        String playerName,
+        Team team,
+        boolean glowing
+    ) {
+    }
+}

src/main/java/games/dmg/spigottyrant/OptOutGlowPolicy.java

@@ -0,0 +1,22 @@
+package games.dmg.spigottyrant;
+
+public final class OptOutGlowPolicy {
+    private OptOutGlowPolicy() {
+    }
+
+    public static boolean shouldGlow(
+        GameState game,
+        PlayerState player,
+        boolean tyrantAvailable,
+        boolean playerAvailableInTyrantWorld,
+        double distanceSquared,
+        double rangeBlocks
+    ) {
+        return game.lifecycle() == GameLifecycle.RUNNING
+            && game.tyrantId().isPresent()
+            && player.optedOutUntil().isPresent()
+            && tyrantAvailable
+            && playerAvailableInTyrantWorld
+            && distanceSquared <= rangeBlocks * rangeBlocks;
+    }
+}

src/main/java/games/dmg/spigottyrant/ParticipationCombatListener.java

@@ -0,0 +1,64 @@
+package games.dmg.spigottyrant;
+
+import java.util.Map;
+import java.util.Optional;
+import java.util.UUID;
+import org.bukkit.ChatColor;
+import org.bukkit.entity.Player;
+import org.bukkit.entity.Projectile;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.entity.EntityDamageByEntityEvent;
+
+public final class ParticipationCombatListener implements Listener {
+    public static final String OPTED_OUT_MESSAGE =
+        "That player has chosen not to take part in the Tyrant event.";
+
+    private final TyrantStateManager stateManager;
+    private final ParticipationCombatService combat;
+
+    public ParticipationCombatListener(
+        TyrantStateManager stateManager,
+        ParticipationCombatService combat
+    ) {
+        this.stateManager = stateManager;
+        this.combat = combat;
+    }
+
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    public void onDamage(EntityDamageByEntityEvent event) {
+        if (!(event.getEntity() instanceof Player target)) {
+            return;
+        }
+        Optional<Player> attacker = attackingPlayer(event);
+        if (attacker.isEmpty()) {
+            return;
+        }
+        Player source = attacker.orElseThrow();
+        Map<UUID, PlayerState> players = stateManager.players();
+        PlayerState attackerState = players.getOrDefault(
+            source.getUniqueId(),
+            PlayerState.newPlayer(source.getUniqueId(), source.getName())
+        );
+        PlayerState targetState = players.getOrDefault(
+            target.getUniqueId(),
+            PlayerState.newPlayer(target.getUniqueId(), target.getName())
+        );
+        if (combat.blocks(stateManager.game(), attackerState, targetState)) {
+            event.setCancelled(true);
+            source.sendMessage(ChatColor.YELLOW + OPTED_OUT_MESSAGE);
+        }
+    }
+
+    private static Optional<Player> attackingPlayer(EntityDamageByEntityEvent event) {
+        if (event.getDamager() instanceof Player player) {
+            return Optional.of(player);
+        }
+        if (event.getDamager() instanceof Projectile projectile
+                && projectile.getShooter() instanceof Player player) {
+            return Optional.of(player);
+        }
+        return Optional.empty();
+    }
+}

src/main/java/games/dmg/spigottyrant/ParticipationCombatService.java

@@ -0,0 +1,24 @@
+package games.dmg.spigottyrant;
+
+public final class ParticipationCombatService {
+    public boolean blocks(
+        GameState game,
+        PlayerState attacker,
+        PlayerState target
+    ) {
+        if (game.lifecycle() != GameLifecycle.RUNNING) {
+            return false;
+        }
+        boolean attackerOptedOut = attacker.optedOutUntil().isPresent();
+        boolean targetOptedOut = target.optedOutUntil().isPresent();
+        boolean attackerTyrantSide = isTyrantSide(game, attacker);
+        boolean targetTyrantSide = isTyrantSide(game, target);
+        return (attackerTyrantSide && targetOptedOut)
+            || (attackerOptedOut && targetTyrantSide);
+    }
+
+    private static boolean isTyrantSide(GameState game, PlayerState player) {
+        return game.tyrantId().filter(player.playerId()::equals).isPresent()
+            || player.tyrantClass() != TyrantClass.NONE;
+    }
+}

src/main/java/games/dmg/spigottyrant/PlayerStatusMessages.java

@@ -15,7 +15,6 @@ public final class PlayerStatusMessages {
         Instant now
     ) {
         List<String> messages = new ArrayList<>();
-        messages.add("Game: " + game.lifecycle());
         boolean hasRole = false;
         if (game.tyrantId().filter(player.playerId()::equals).isPresent()) {
             messages.add("Role: TYRANT. Level " + game.tyrantLevel() + ", choices "
@@ -45,8 +44,8 @@ public final class PlayerStatusMessages {
             messages.add("Participation: OPTED OUT. You may use /tyrant optin at "
                 + player.optedOutUntil().orElseThrow() + ".");
         } else if (!hasRole) {
-            messages.add("You currently have no role or class. Use /tyrant optout "
+            messages.add("Use /tyrant optout if you do not want to participate "
-                + "if you do not want to participate.");
+                + "in Tyrant events.");
         }
         return List.copyOf(messages);
     }

src/main/java/games/dmg/spigottyrant/PluginSettings.java

@@ -28,6 +28,7 @@ public record PluginSettings(
     int fixerStrengthLevel,
     int fixerNormalHeartRows,
     int fixerNearTyrantHeartRows,
+    Duration vigilanteCombatDuration,
     Duration rosterIntelligenceCooldown,
     int tyrantStrengthLevel,
     int tyrantResistanceLevel,
@@ -37,6 +38,7 @@ public record PluginSettings(
     AbilityItemSettings assassinItem,
     AbilityItemSettings fixerItem,
     AbilityItemSettings tamerItem,
+    AbilityItemSettings capturedMobItem,
     String recoveryCommand,
     String inventoryFullMessage,
     boolean freezeTimersWhilePaused
@@ -65,6 +67,7 @@ public record PluginSettings(
                 "fixer-near-tyrant-heart-rows must be at least fixer-normal-heart-rows"
             );
         }
+        requirePositive(vigilanteCombatDuration, "vigilante-combat-seconds");
         requirePositive(rosterIntelligenceCooldown, "roster-intelligence-cooldown-seconds");
         requireEffectLevel(tyrantStrengthLevel, "tyrant-strength-level");
         requireEffectLevel(tyrantResistanceLevel, "tyrant-resistance-level");
@@ -74,6 +77,7 @@ public record PluginSettings(
         assassinItem = Objects.requireNonNull(assassinItem, "assassinItem");
         fixerItem = Objects.requireNonNull(fixerItem, "fixerItem");
         tamerItem = Objects.requireNonNull(tamerItem, "tamerItem");
+        capturedMobItem = Objects.requireNonNull(capturedMobItem, "capturedMobItem");
         recoveryCommand = requireText(recoveryCommand, "recovery-command");
         inventoryFullMessage = requireText(inventoryFullMessage, "inventory-full-message");
     }
@@ -99,6 +103,7 @@ public record PluginSettings(
             integer(values, "fixer-strength-level", 1),
             integer(values, "fixer-normal-heart-rows", 2),
             integer(values, "fixer-near-tyrant-heart-rows", 3),
+            duration(values, "vigilante-combat-seconds", Duration.ofSeconds(15)),
             duration(values, "roster-intelligence-cooldown-seconds", Duration.ofHours(24)),
             integer(values, "tyrant-strength-level", 1),
             integer(values, "tyrant-resistance-level", 1),
@@ -108,6 +113,7 @@ public record PluginSettings(
             item(values, "assassin-item", new AbilityItemSettings("STICK", "Assassin Cloak")),
             item(values, "fixer-item", new AbilityItemSettings("STICK", "Fixer's Wrench")),
             item(values, "tamer-item", new AbilityItemSettings("FISHING_ROD", "Tamer's Lead")),
+            item(values, "captured-mob-item", new AbilityItemSettings("PAPER", "Captured Mob")),
             string(values, "recovery-command", "/tyrant item"),
             string(
                 values,

src/main/java/games/dmg/spigottyrant/PluginSettingsValidator.java

@@ -11,6 +11,7 @@ public final class PluginSettingsValidator {
         validateItem(settings.assassinItem(), "assassin-item");
         validateItem(settings.fixerItem(), "fixer-item");
         validateItem(settings.tamerItem(), "tamer-item");
+        validateItem(settings.capturedMobItem(), "captured-mob-item");
         for (String entityType : settings.deniedMobTypes()) {
             try {
                 EntityType.valueOf(entityType);

src/main/java/games/dmg/spigottyrant/SpigotTyrantPlugin.java

@@ -11,6 +11,11 @@ public final class SpigotTyrantPlugin extends JavaPlugin {
     private PluginSettings settings;
     private TyrantStateManager stateManager;
     private TyrantPresentation tyrantPresentation;
+    private VigilanteEffectController vigilanteEffects;
+    private AssassinEffectController assassinEffects;
+    private FixerEffectController fixerEffects;
+    private TyrantEffectController tyrantEffects;
+    private OptOutGlowController optOutGlow;
 
     @Override
     public void onEnable() {
@@ -46,6 +51,30 @@ public final class SpigotTyrantPlugin extends JavaPlugin {
             random
         );
         BukkitOnlinePlayerDirectory onlinePlayers = new BukkitOnlinePlayerDirectory();
+        FollowerService followers = new FollowerService();
+        AbilityReadinessService readiness = new AbilityReadinessService();
+        AbilityItemService abilityItems = new BukkitAbilityItemService(this, settings);
+        CapturedMobItemService capturedMobItems = new BukkitCapturedMobItemService(
+            this, settings
+        );
+        CapturedMobService capturedMobs = new CapturedMobService();
+        CapturedMobInventoryService capturedMobInventory = new CapturedMobInventoryService(
+            capturedMobItems, settings
+        );
+        AssassinAbilityService assassinAbilities = new AssassinAbilityService(
+            readiness, settings
+        );
+        assassinEffects = new AssassinEffectController(
+            stateManager, getServer(), settings, clock
+        );
+        FixerAbilityService fixerAbilities = new FixerAbilityService(readiness, settings);
+        fixerEffects = new FixerEffectController(stateManager, getServer(), settings, clock);
+        tyrantEffects = new TyrantEffectController(stateManager, getServer(), settings);
+        optOutGlow = new OptOutGlowController(stateManager, getServer(), settings);
+        VigilanteCombatTracker combatTracker = new VigilanteCombatTracker();
+        vigilanteEffects = new VigilanteEffectController(
+            stateManager, getServer(), combatTracker, settings, clock
+        );
         tyrantPresentation = new BukkitTyrantPresentation(getServer());
         ManagedRoleEffects managedEffects = new BukkitManagedRoleEffects(
             stateManager, tyrantPresentation
@@ -60,8 +89,12 @@ public final class SpigotTyrantPlugin extends JavaPlugin {
                 clock,
                 new ParticipationService(settings.optOutDuration()),
                 new RoleRelinquishmentService(succession, maintenance),
-                tyrantPresentation
+                tyrantPresentation,
+                abilityItems,
+                new TyrantAbilityService(settings.rosterIntelligenceCooldown())
             ));
+        Objects.requireNonNull(getCommand("vigilante"), "Missing vigilante metadata")
+            .setExecutor(new VigilanteCommand(stateManager, followers, onlinePlayers));
         Objects.requireNonNull(getCommand("tyrantadmin"), "Missing tyrantadmin metadata")
             .setExecutor(new TyrantAdminCommand(
                 stateManager,
@@ -84,6 +117,53 @@ public final class SpigotTyrantPlugin extends JavaPlugin {
             ),
             this
         );
+        getServer().getPluginManager().registerEvents(
+            new VigilanteDeathListener(
+                stateManager, new TyrantProgressionService(), maintenance,
+                getServer(), clock
+            ),
+            this
+        );
+        getServer().getPluginManager().registerEvents(
+            new ParticipationCombatListener(
+                stateManager, new ParticipationCombatService()
+            ),
+            this
+        );
+        getServer().getPluginManager().registerEvents(optOutGlow, this);
+        getServer().getPluginManager().registerEvents(
+            new VigilanteCombatListener(
+                stateManager, combatTracker, clock, settings.vigilanteCombatDuration()
+            ),
+            this
+        );
+        getServer().getPluginManager().registerEvents(
+            new BoundItemListener(abilityItems),
+            this
+        );
+        getServer().getPluginManager().registerEvents(
+            new TamerListener(
+                stateManager, abilityItems, capturedMobItems, capturedMobs,
+                settings, getServer()
+            ),
+            this
+        );
+        getServer().getPluginManager().registerEvents(
+            new AssassinItemListener(
+                stateManager, abilityItems, assassinAbilities, settings, clock
+            ),
+            this
+        );
+        getServer().getPluginManager().registerEvents(
+            new AssassinJumpListener(stateManager, assassinAbilities, clock),
+            this
+        );
+        getServer().getPluginManager().registerEvents(
+            new FixerItemListener(
+                stateManager, abilityItems, fixerAbilities, settings, clock
+            ),
+            this
+        );
         long maintenanceTicks = Math.max(
             1L, Math.multiplyExact(settings.selectionRetryInterval().toSeconds(), 20L)
         );
@@ -95,12 +175,41 @@ public final class SpigotTyrantPlugin extends JavaPlugin {
             maintenanceTicks,
             maintenanceTicks
         );
+        getServer().getScheduler().runTaskTimer(this, vigilanteEffects, 10L, 10L);
+        getServer().getScheduler().runTaskTimer(this, assassinEffects, 10L, 10L);
+        getServer().getScheduler().runTaskTimer(this, fixerEffects, 10L, 10L);
+        getServer().getScheduler().runTaskTimer(this, tyrantEffects, 10L, 10L);
+        getServer().getScheduler().runTaskTimer(this, optOutGlow, 10L, 10L);
+        getServer().getScheduler().runTaskTimer(
+            this,
+            new AbilityItemRefreshTask(
+                stateManager, readiness, abilityItems, capturedMobInventory,
+                getServer(), clock
+            ),
+            20L,
+            20L
+        );
         getServer().getScheduler().runTaskTimer(this, stateManager::saveIfDirty, 600L, 600L);
         getLogger().info("Spigot Tyrant enabled.");
     }
 
     @Override
     public void onDisable() {
+        if (optOutGlow != null) {
+            optOutGlow.clearAll();
+        }
+        if (tyrantEffects != null) {
+            tyrantEffects.clearAll();
+        }
+        if (fixerEffects != null) {
+            fixerEffects.clearAll();
+        }
+        if (assassinEffects != null) {
+            assassinEffects.clearAll();
+        }
+        if (vigilanteEffects != null) {
+            vigilanteEffects.clear();
+        }
         if (tyrantPresentation != null) {
             tyrantPresentation.clear();
         }

src/main/java/games/dmg/spigottyrant/TamerListener.java

@@ -0,0 +1,249 @@
+package games.dmg.spigottyrant;
+
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Optional;
+import java.util.UUID;
+import org.bukkit.ChatColor;
+import org.bukkit.Location;
+import org.bukkit.Server;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.EntitySnapshot;
+import org.bukkit.entity.ItemFrame;
+import org.bukkit.entity.LivingEntity;
+import org.bukkit.entity.Player;
+import org.bukkit.entity.Tameable;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.block.Action;
+import org.bukkit.event.block.BlockDispenseEvent;
+import org.bukkit.event.entity.EntityPickupItemEvent;
+import org.bukkit.event.entity.PlayerDeathEvent;
+import org.bukkit.event.inventory.InventoryClickEvent;
+import org.bukkit.event.player.PlayerDropItemEvent;
+import org.bukkit.event.player.PlayerInteractEntityEvent;
+import org.bukkit.event.player.PlayerInteractEvent;
+import org.bukkit.inventory.ItemStack;
+
+public final class TamerListener implements Listener {
+    private final TyrantStateManager stateManager;
+    private final AbilityItemService abilityItems;
+    private final CapturedMobItemService capturedItems;
+    private final CapturedMobService capturedMobs;
+    private final PluginSettings settings;
+    private final Server server;
+
+    public TamerListener(
+        TyrantStateManager stateManager,
+        AbilityItemService abilityItems,
+        CapturedMobItemService capturedItems,
+        CapturedMobService capturedMobs,
+        PluginSettings settings,
+        Server server
+    ) {
+        this.stateManager = stateManager;
+        this.abilityItems = abilityItems;
+        this.capturedItems = capturedItems;
+        this.capturedMobs = capturedMobs;
+        this.settings = settings;
+        this.server = server;
+    }
+
+    @EventHandler(priority = EventPriority.HIGH)
+    public void onCapture(PlayerInteractEntityEvent event) {
+        ItemStack held = event.getPlayer().getInventory().getItem(event.getHand());
+        if (abilityItems.ability(held).filter(Ability.TAMER_CAPTURE::equals).isEmpty()) {
+            return;
+        }
+        event.setCancelled(true);
+        Player player = event.getPlayer();
+        if (abilityItems.owner(held).filter(player.getUniqueId()::equals).isEmpty()) {
+            player.getInventory().setItem(event.getHand(), null);
+            return;
+        }
+        PlayerState state = stateManager.player(player.getUniqueId(), player.getName());
+        Entity target = event.getRightClicked();
+        if (!canCapture(state, target)) {
+            player.sendMessage(ChatColor.RED + "That mob cannot be captured.");
+            return;
+        }
+        EntitySnapshot snapshot = target.createSnapshot();
+        if (snapshot == null) {
+            player.sendMessage(ChatColor.RED + "That mob could not be captured safely.");
+            return;
+        }
+        UUID captureId = UUID.randomUUID();
+        ItemStack capturedItem = capturedItems.create(
+            player.getUniqueId(), captureId, target.getType().name()
+        );
+        Map<Integer, ItemStack> leftovers = player.getInventory().addItem(capturedItem);
+        if (!leftovers.isEmpty()) {
+            player.sendMessage(ChatColor.RED + settings.inventoryFullMessage());
+            return;
+        }
+        PlayerState updated = capturedMobs.capture(
+            state, captureId, target.getType().name(), snapshot.getAsString()
+        );
+        stateManager.updatePlayer(
+            player.getUniqueId(), player.getName(), current -> updated
+        );
+        stateManager.saveIfDirty();
+        target.remove();
+        player.sendMessage(ChatColor.GREEN + "Captured " + target.getType().name() + ".");
+    }
+
+    @EventHandler(priority = EventPriority.HIGH)
+    public void onPlace(PlayerInteractEvent event) {
+        Action action = event.getAction();
+        if (action != Action.RIGHT_CLICK_AIR && action != Action.RIGHT_CLICK_BLOCK) {
+            return;
+        }
+        if (!capturedItems.isCapturedMob(event.getItem())) {
+            return;
+        }
+        event.setCancelled(true);
+        UUID captureId = capturedItems.captureId(event.getItem()).orElseThrow();
+        if (capturedItems.owner(event.getItem())
+                .filter(event.getPlayer().getUniqueId()::equals).isEmpty()) {
+            event.getPlayer().getInventory().setItem(event.getHand(), null);
+            return;
+        }
+        Location location = event.getClickedBlock() == null
+            ? event.getPlayer().getLocation().add(
+                event.getPlayer().getLocation().getDirection().normalize().multiply(2.0)
+            )
+            : event.getClickedBlock().getRelative(event.getBlockFace())
+                .getLocation().add(0.5, 0.0, 0.5);
+        if (spawnAndRelease(event.getPlayer(), captureId, location)) {
+            event.getPlayer().getInventory().setItem(event.getHand(), null);
+        } else {
+            event.getPlayer().sendMessage(ChatColor.RED
+                + "The mob cannot be placed safely there.");
+        }
+    }
+
+    @EventHandler(priority = EventPriority.HIGH)
+    public void onDrop(PlayerDropItemEvent event) {
+        ItemStack item = event.getItemDrop().getItemStack();
+        if (!capturedItems.isCapturedMob(item)) {
+            return;
+        }
+        UUID captureId = capturedItems.captureId(item).orElseThrow();
+        if (capturedItems.owner(item).filter(event.getPlayer().getUniqueId()::equals).isEmpty()
+                || !spawnAndRelease(
+                    event.getPlayer(), captureId, event.getItemDrop().getLocation()
+                )) {
+            event.setCancelled(true);
+            return;
+        }
+        event.getItemDrop().remove();
+    }
+
+    @EventHandler(priority = EventPriority.HIGH)
+    public void onDeath(PlayerDeathEvent event) {
+        Iterator<ItemStack> drops = event.getDrops().iterator();
+        while (drops.hasNext()) {
+            ItemStack item = drops.next();
+            if (!capturedItems.isCapturedMob(item)) {
+                continue;
+            }
+            UUID captureId = capturedItems.captureId(item).orElseThrow();
+            if (spawnAndRelease(event.getEntity(), captureId, event.getEntity().getLocation())) {
+                drops.remove();
+            }
+        }
+    }
+
+    @EventHandler
+    public void onInventoryClick(InventoryClickEvent event) {
+        if (capturedItems.isCapturedMob(event.getCurrentItem())
+                || capturedItems.isCapturedMob(event.getCursor())) {
+            if (!(event.getWhoClicked() instanceof Player player)
+                    || event.isShiftClick()
+                    || event.getClickedInventory() == null
+                    || !event.getClickedInventory().equals(player.getInventory())) {
+                event.setCancelled(true);
+            }
+        }
+    }
+
+    @EventHandler
+    public void onFrame(PlayerInteractEntityEvent event) {
+        if (event.getRightClicked() instanceof ItemFrame
+                && capturedItems.isCapturedMob(
+                    event.getPlayer().getInventory().getItem(event.getHand())
+                )) {
+            event.setCancelled(true);
+        }
+    }
+
+    @EventHandler
+    public void onDispense(BlockDispenseEvent event) {
+        if (capturedItems.isCapturedMob(event.getItem())) {
+            event.setCancelled(true);
+        }
+    }
+
+    @EventHandler
+    public void onPickup(EntityPickupItemEvent event) {
+        if (!(event.getEntity() instanceof Player player)
+                || !capturedItems.isCapturedMob(event.getItem().getItemStack())) {
+            return;
+        }
+        if (capturedItems.owner(event.getItem().getItemStack())
+                .filter(player.getUniqueId()::equals).isEmpty()) {
+            event.setCancelled(true);
+        }
+    }
+
+    private boolean canCapture(PlayerState player, Entity target) {
+        if (stateManager.game().lifecycle() != GameLifecycle.RUNNING
+                || player.tyrantClass() != TyrantClass.TAMER
+                || !(target instanceof LivingEntity)
+                || target instanceof Player
+                || target.getType().name().equals("ENDER_DRAGON")
+                || settings.deniedMobTypes().contains(target.getType().name())
+                || target.getCustomName() != null) {
+            return false;
+        }
+        return !(target instanceof Tameable tameable) || !tameable.isTamed();
+    }
+
+    private boolean spawnAndRelease(Player player, UUID captureId, Location location) {
+        PlayerState state = stateManager.player(player.getUniqueId(), player.getName());
+        Optional<CapturedMob> stored = capturedMobs.find(state, captureId);
+        if (stored.isEmpty() || !safe(location)) {
+            return false;
+        }
+        CapturedMob mob = stored.orElseThrow();
+        if ("ENDER_DRAGON".equals(mob.entityType())
+                || settings.deniedMobTypes().contains(mob.entityType())) {
+            return false;
+        }
+        try {
+            EntitySnapshot snapshot = server.getEntityFactory().createEntitySnapshot(
+                mob.data().get("snapshot")
+            );
+            if (!snapshot.getEntityType().name().equals(mob.entityType())) {
+                return false;
+            }
+            snapshot.createEntity(location);
+        } catch (IllegalArgumentException | IllegalStateException exception) {
+            return false;
+        }
+        PlayerState released = capturedMobs.release(state, captureId);
+        stateManager.updatePlayer(
+            player.getUniqueId(), player.getName(), current -> released
+        );
+        stateManager.saveIfDirty();
+        return true;
+    }
+
+    private static boolean safe(Location location) {
+        return location.getWorld() != null
+            && location.getBlock().isPassable()
+            && location.clone().add(0.0, 1.0, 0.0).getBlock().isPassable()
+            && location.getWorld().getWorldBorder().isInside(location);
+    }
+}

src/main/java/games/dmg/spigottyrant/TyrantAbilityService.java

@@ -0,0 +1,53 @@
+package games.dmg.spigottyrant;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.EnumMap;
+import java.util.Map;
+
+public final class TyrantAbilityService {
+    private final Duration intelligenceCooldown;
+
+    public TyrantAbilityService(Duration intelligenceCooldown) {
+        this.intelligenceCooldown = intelligenceCooldown;
+    }
+
+    public IntelligenceResult useIntelligence(
+        GameState game,
+        PlayerState tyrant,
+        Map<java.util.UUID, PlayerState> players,
+        Instant now
+    ) {
+        if (game.lifecycle() != GameLifecycle.RUNNING) {
+            return new IntelligenceResult(tyrant, AbilityUseStatus.GAME_NOT_RUNNING, 0);
+        }
+        if (game.tyrantId().filter(tyrant.playerId()::equals).isEmpty()) {
+            return new IntelligenceResult(tyrant, AbilityUseStatus.WRONG_OWNER, 0);
+        }
+        if (!game.purchases().contains(TyrantUnlock.ROSTER_INTELLIGENCE)) {
+            return new IntelligenceResult(tyrant, AbilityUseStatus.NOT_READY, 0);
+        }
+        if (tyrant.cooldownEnds().getOrDefault(
+                Ability.ROSTER_INTELLIGENCE, Instant.MIN
+            ).isAfter(now)) {
+            return new IntelligenceResult(tyrant, AbilityUseStatus.COOLDOWN, 0);
+        }
+        int count = game.vigilanteId().isPresent() ? 1 : 0;
+        if (game.vigilanteId().isPresent()) {
+            java.util.UUID vigilante = game.vigilanteId().orElseThrow();
+            count += (int) players.values().stream()
+                .filter(player -> player.followerOf().filter(vigilante::equals).isPresent())
+                .filter(player -> player.optedOutUntil().isEmpty())
+                .count();
+        }
+        Map<Ability, Instant> cooldowns = new EnumMap<>(Ability.class);
+        cooldowns.putAll(tyrant.cooldownEnds());
+        cooldowns.put(Ability.ROSTER_INTELLIGENCE, now.plus(intelligenceCooldown));
+        PlayerState updated = new PlayerState(
+            tyrant.playerId(), tyrant.latestName(), tyrant.lastLogin(),
+            tyrant.optedOutUntil(), tyrant.tyrantClass(), tyrant.followerOf(), cooldowns,
+            tyrant.readyAbilityItems(), tyrant.capturedMobs()
+        );
+        return new IntelligenceResult(updated, AbilityUseStatus.ACTIVATED, count);
+    }
+}

src/main/java/games/dmg/spigottyrant/TyrantCommand.java

@@ -18,6 +18,8 @@ public final class TyrantCommand implements CommandExecutor {
     private final ParticipationService participation;
     private final RoleRelinquishmentService relinquishment;
     private final TyrantPresentation presentation;
+    private final AbilityItemService abilityItems;
+    private final TyrantAbilityService tyrantAbilities;
 
     public TyrantCommand(
         TyrantStateManager stateManager,
@@ -41,7 +43,8 @@ public final class TyrantCommand implements CommandExecutor {
     ) {
         this(
             stateManager, progression, assignments, onlinePlayers, clock,
-            new ParticipationService(Duration.ofDays(7)), null, null
+            new ParticipationService(Duration.ofDays(7)), null, null, null,
+            new TyrantAbilityService(Duration.ofHours(24))
         );
     }
 
@@ -53,7 +56,9 @@ public final class TyrantCommand implements CommandExecutor {
         Clock clock,
         ParticipationService participation,
         RoleRelinquishmentService relinquishment,
-        TyrantPresentation presentation
+        TyrantPresentation presentation,
+        AbilityItemService abilityItems,
+        TyrantAbilityService tyrantAbilities
     ) {
         this.stateManager = stateManager;
         this.progression = progression;
@@ -63,6 +68,8 @@ public final class TyrantCommand implements CommandExecutor {
         this.participation = participation;
         this.relinquishment = relinquishment;
         this.presentation = presentation;
+        this.abilityItems = abilityItems;
+        this.tyrantAbilities = tyrantAbilities;
     }
 
     @Override
@@ -104,9 +111,17 @@ public final class TyrantCommand implements CommandExecutor {
             relinquish(player, arguments);
             return true;
         }
+        if (arguments.length == 1 && arguments[0].equalsIgnoreCase("item")) {
+            recoverItems(player);
+            return true;
+        }
+        if (arguments.length == 1 && arguments[0].equalsIgnoreCase("intelligence")) {
+            useIntelligence(player);
+            return true;
+        }
         player.sendMessage(
             ChatColor.YELLOW
-                + "Usage: /tyrant <status|choices|buy|assign|optout|optin|"
+                + "Usage: /tyrant <status|choices|buy|assign|item|intelligence|optout|optin|"
                 + "relinquish confirm>"
         );
         return true;
@@ -185,10 +200,17 @@ public final class TyrantCommand implements CommandExecutor {
         }
         stateManager.replacePlayers(result.players());
         stateManager.saveIfDirty();
-        result.previousHolderId().map(onlinePlayers::findById).ifPresent(previous ->
+        result.previousHolderId().map(onlinePlayers::findById).ifPresent(previous -> {
+            if (abilityItems != null) {
+                abilityItems.removeAll(previous);
+            }
             previous.sendMessage(ChatColor.YELLOW + "You are no longer the "
-                + tyrantClass.name() + ".")
+                + tyrantClass.name() + ".");
-        );
+        });
+        if (abilityItems != null) {
+            abilityItems.removeInvalid(target, result.players().get(target.getUniqueId()));
+            abilityItems.recover(target, result.players().get(target.getUniqueId()));
+        }
         target.sendMessage(ChatColor.GREEN + "You are now the " + tyrantClass.name() + ".");
         tyrant.sendMessage(
             ChatColor.GREEN + "Assigned " + tyrantClass.name() + " to " + target.getName() + "."
@@ -227,6 +249,35 @@ public final class TyrantCommand implements CommandExecutor {
             + readable(result[0].status()) + ".");
     }
 
+    private void useIntelligence(Player player) {
+        PlayerState state = stateManager.player(player.getUniqueId(), player.getName());
+        IntelligenceResult result = tyrantAbilities.useIntelligence(
+            stateManager.game(), state, stateManager.players(), clock.instant()
+        );
+        if (result.status() == AbilityUseStatus.ACTIVATED) {
+            stateManager.updatePlayer(
+                player.getUniqueId(), player.getName(), current -> result.tyrant()
+            );
+            stateManager.saveIfDirty();
+            player.sendMessage(ChatColor.YELLOW + "Vigilante-side members: "
+                + result.memberCount() + ".");
+        } else {
+            player.sendMessage(ChatColor.RED + "Intelligence unavailable: "
+                + readable(result.status()) + ".");
+        }
+    }
+
+    private void recoverItems(Player player) {
+        if (abilityItems == null) {
+            player.sendMessage(ChatColor.RED + "Ability item recovery is unavailable.");
+            return;
+        }
+        PlayerState state = stateManager.player(player.getUniqueId(), player.getName());
+        abilityItems.recover(player, state);
+        player.sendMessage(ChatColor.YELLOW
+            + "Recovered every currently ready missing class item that could fit.");
+    }
+
     private void relinquish(Player player, String[] arguments) {
         if (arguments.length != 2 || !arguments[1].equalsIgnoreCase("confirm")) {
             player.sendMessage(ChatColor.RED

src/main/java/games/dmg/spigottyrant/TyrantEffectController.java

@@ -0,0 +1,77 @@
+package games.dmg.spigottyrant;
+
+import java.util.Optional;
+import java.util.UUID;
+import org.bukkit.Server;
+import org.bukkit.entity.Player;
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
+
+public final class TyrantEffectController implements Runnable {
+    private static final int EFFECT_TICKS = 30;
+    private final TyrantStateManager stateManager;
+    private final Server server;
+    private final PluginSettings settings;
+    private Optional<UUID> previousTyrant = Optional.empty();
+
+    public TyrantEffectController(
+        TyrantStateManager stateManager,
+        Server server,
+        PluginSettings settings
+    ) {
+        this.stateManager = stateManager;
+        this.server = server;
+        this.settings = settings;
+    }
+
+    @Override
+    public void run() {
+        GameState game = stateManager.game();
+        if (!previousTyrant.equals(game.tyrantId())) {
+            previousTyrant.map(server::getPlayer).ifPresent(TyrantEffectController::clear);
+            previousTyrant = game.tyrantId();
+        }
+        Player tyrant = game.tyrantId().map(server::getPlayer).orElse(null);
+        if (tyrant == null || game.lifecycle() != GameLifecycle.RUNNING) {
+            if (tyrant != null) {
+                clear(tyrant);
+            }
+            return;
+        }
+        apply(
+            tyrant, PotionEffectType.STRENGTH,
+            game.purchases().contains(TyrantUnlock.STRENGTH),
+            settings.tyrantStrengthLevel()
+        );
+        apply(
+            tyrant, PotionEffectType.RESISTANCE,
+            game.purchases().contains(TyrantUnlock.RESISTANCE),
+            settings.tyrantResistanceLevel()
+        );
+    }
+
+    public void clearAll() {
+        previousTyrant.map(server::getPlayer).ifPresent(TyrantEffectController::clear);
+        previousTyrant = Optional.empty();
+    }
+
+    private static void apply(
+        Player player,
+        PotionEffectType type,
+        boolean purchased,
+        int level
+    ) {
+        if (purchased) {
+            player.addPotionEffect(new PotionEffect(
+                type, EFFECT_TICKS, level - 1, false, true, true
+            ));
+        } else {
+            player.removePotionEffect(type);
+        }
+    }
+
+    private static void clear(Player player) {
+        player.removePotionEffect(PotionEffectType.STRENGTH);
+        player.removePotionEffect(PotionEffectType.RESISTANCE);
+    }
+}

src/main/java/games/dmg/spigottyrant/VigilanteCombatListener.java

@@ -0,0 +1,50 @@
+package games.dmg.spigottyrant;
+
+import java.time.Clock;
+import java.time.Duration;
+import java.util.UUID;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.entity.EntityDamageByEntityEvent;
+
+public final class VigilanteCombatListener implements Listener {
+    private final TyrantStateManager stateManager;
+    private final VigilanteCombatTracker tracker;
+    private final Clock clock;
+    private final Duration combatDuration;
+
+    public VigilanteCombatListener(
+        TyrantStateManager stateManager,
+        VigilanteCombatTracker tracker,
+        Clock clock,
+        Duration combatDuration
+    ) {
+        this.stateManager = stateManager;
+        this.tracker = tracker;
+        this.clock = clock;
+        this.combatDuration = combatDuration;
+    }
+
+    @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
+    public void onDamage(EntityDamageByEntityEvent event) {
+        if (!(event.getEntity() instanceof Player damaged)
+                || !(event.getDamager() instanceof Player attacker)) {
+            return;
+        }
+        GameState game = stateManager.game();
+        if (game.lifecycle() != GameLifecycle.RUNNING
+                || game.tyrantId().isEmpty() || game.vigilanteId().isEmpty()) {
+            return;
+        }
+        UUID first = damaged.getUniqueId();
+        UUID second = attacker.getUniqueId();
+        UUID tyrant = game.tyrantId().orElseThrow();
+        UUID vigilante = game.vigilanteId().orElseThrow();
+        if ((first.equals(tyrant) && second.equals(vigilante))
+                || (first.equals(vigilante) && second.equals(tyrant))) {
+            tracker.markCombat(clock.instant(), combatDuration);
+        }
+    }
+}

src/main/java/games/dmg/spigottyrant/VigilanteCombatTracker.java

@@ -0,0 +1,21 @@
+package games.dmg.spigottyrant;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Optional;
+
+public final class VigilanteCombatTracker {
+    private Optional<Instant> activeUntil = Optional.empty();
+
+    public void markCombat(Instant now, Duration duration) {
+        activeUntil = Optional.of(now.plus(duration));
+    }
+
+    public boolean isActive(Instant now) {
+        return activeUntil.filter(deadline -> deadline.isAfter(now)).isPresent();
+    }
+
+    public void clear() {
+        activeUntil = Optional.empty();
+    }
+}

src/main/java/games/dmg/spigottyrant/VigilanteCommand.java

@@ -0,0 +1,83 @@
+package games.dmg.spigottyrant;
+
+import java.util.Locale;
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+public final class VigilanteCommand implements CommandExecutor {
+    private final TyrantStateManager stateManager;
+    private final FollowerService followers;
+    private final OnlinePlayerDirectory onlinePlayers;
+
+    public VigilanteCommand(
+        TyrantStateManager stateManager,
+        FollowerService followers,
+        OnlinePlayerDirectory onlinePlayers
+    ) {
+        this.stateManager = stateManager;
+        this.followers = followers;
+        this.onlinePlayers = onlinePlayers;
+    }
+
+    @Override
+    public boolean onCommand(
+        CommandSender sender,
+        Command command,
+        String label,
+        String[] arguments
+    ) {
+        if (!(sender instanceof Player player)) {
+            sender.sendMessage("This command must be used by a player.");
+            return true;
+        }
+        FollowerResult result;
+        Player target = null;
+        if (arguments.length == 1 && arguments[0].equalsIgnoreCase("accept")) {
+            result = followers.accept(stateManager.game(), stateManager.players(),
+                player.getUniqueId());
+        } else if (arguments.length == 1 && arguments[0].equalsIgnoreCase("leave")) {
+            result = followers.leave(stateManager.game(), stateManager.players(),
+                player.getUniqueId());
+        } else if (arguments.length == 2
+                && (arguments[0].equalsIgnoreCase("invite")
+                    || arguments[0].equalsIgnoreCase("dismiss"))) {
+            target = onlinePlayers.findByName(arguments[1]);
+            if (target == null) {
+                player.sendMessage(ChatColor.RED + "That player must be online.");
+                return true;
+            }
+            stateManager.player(target.getUniqueId(), target.getName());
+            result = arguments[0].equalsIgnoreCase("invite")
+                ? followers.invite(
+                    stateManager.game(), stateManager.players(), player.getUniqueId(),
+                    target.getUniqueId()
+                )
+                : followers.dismiss(
+                    stateManager.game(), stateManager.players(), player.getUniqueId(),
+                    target.getUniqueId()
+                );
+        } else {
+            player.sendMessage(ChatColor.YELLOW
+                + "Usage: /vigilante <invite <player>|accept|dismiss <player>|leave>");
+            return true;
+        }
+        if (result.status() == FollowerStatus.JOINED
+                || result.status() == FollowerStatus.DISMISSED
+                || result.status() == FollowerStatus.LEFT) {
+            stateManager.replacePlayers(result.players());
+            stateManager.saveIfDirty();
+        }
+        player.sendMessage(ChatColor.YELLOW + "Follower action: "
+            + result.status().name().toLowerCase(Locale.ROOT).replace('_', ' ') + ".");
+        if (target != null && result.status() == FollowerStatus.INVITED) {
+            target.sendMessage(ChatColor.YELLOW + player.getName()
+                + " invited you to become a Follower. Use /vigilante accept.");
+        } else if (target != null && result.status() == FollowerStatus.DISMISSED) {
+            target.sendMessage(ChatColor.YELLOW + "You are no longer a Follower.");
+        }
+        return true;
+    }
+}

src/main/java/games/dmg/spigottyrant/VigilanteDeathListener.java

@@ -0,0 +1,62 @@
+package games.dmg.spigottyrant;
+
+import java.time.Clock;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.bukkit.ChatColor;
+import org.bukkit.Server;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.entity.PlayerDeathEvent;
+
+public final class VigilanteDeathListener implements Listener {
+    private final TyrantStateManager stateManager;
+    private final TyrantProgressionService progression;
+    private final RoleMaintenanceService maintenance;
+    private final Server server;
+    private final Clock clock;
+
+    public VigilanteDeathListener(
+        TyrantStateManager stateManager,
+        TyrantProgressionService progression,
+        RoleMaintenanceService maintenance,
+        Server server,
+        Clock clock
+    ) {
+        this.stateManager = stateManager;
+        this.progression = progression;
+        this.maintenance = maintenance;
+        this.server = server;
+        this.clock = clock;
+    }
+
+    @EventHandler(priority = EventPriority.MONITOR)
+    public void onDeath(PlayerDeathEvent event) {
+        UUID victimId = event.getEntity().getUniqueId();
+        GameState game = stateManager.game();
+        if (game.lifecycle() != GameLifecycle.RUNNING
+                || game.vigilanteId().filter(victimId::equals).isEmpty()) {
+            return;
+        }
+        Optional<UUID> killerId = Optional.ofNullable(event.getEntity().getKiller())
+            .map(Player::getUniqueId);
+        GameState progressed = progression.recordVigilanteDeath(game, killerId);
+        PersistentState withProgress = new PersistentState(
+            progressed, stateManager.players()
+        );
+        Set<UUID> online = server.getOnlinePlayers().stream()
+            .map(Player::getUniqueId)
+            .collect(java.util.stream.Collectors.toUnmodifiableSet());
+        LifecycleState rerolled = maintenance.rerollVigilante(
+            withProgress, Optional.of(victimId), online, clock.instant()
+        );
+        stateManager.replaceState(rerolled);
+        stateManager.saveIfDirty();
+        String message = ChatColor.YELLOW + "The Vigilante died; a replacement "
+            + (rerolled.game().vigilanteId().isPresent() ? "has been selected." : "is pending.");
+        server.getOnlinePlayers().forEach(player -> player.sendMessage(message));
+    }
+}

src/main/java/games/dmg/spigottyrant/VigilanteEffectController.java

@@ -0,0 +1,98 @@
+package games.dmg.spigottyrant;
+
+import java.time.Clock;
+import java.util.Optional;
+import java.util.UUID;
+import org.bukkit.Server;
+import org.bukkit.entity.Player;
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
+
+public final class VigilanteEffectController implements Runnable {
+    private static final int EFFECT_TICKS = 30;
+    private final TyrantStateManager stateManager;
+    private final Server server;
+    private final VigilanteCombatTracker tracker;
+    private final PluginSettings settings;
+    private final Clock clock;
+    private Optional<UUID> previousVigilante = Optional.empty();
+
+    public VigilanteEffectController(
+        TyrantStateManager stateManager,
+        Server server,
+        VigilanteCombatTracker tracker,
+        PluginSettings settings,
+        Clock clock
+    ) {
+        this.stateManager = stateManager;
+        this.server = server;
+        this.tracker = tracker;
+        this.settings = settings;
+        this.clock = clock;
+    }
+
+    @Override
+    public void run() {
+        GameState game = stateManager.game();
+        if (!previousVigilante.equals(game.vigilanteId())) {
+            previousVigilante.map(server::getPlayer).ifPresent(this::removeManagedEffects);
+            previousVigilante = game.vigilanteId();
+        }
+        Player vigilante = game.vigilanteId().map(server::getPlayer).orElse(null);
+        if (vigilante == null || game.lifecycle() != GameLifecycle.RUNNING
+                || !tracker.isActive(clock.instant()) || vigilante.isDead()) {
+            if (vigilante != null) {
+                removeManagedEffects(vigilante);
+            }
+            return;
+        }
+        int followers = nearbyLivingFollowers(game.vigilanteId().orElseThrow(), vigilante);
+        VigilantePower.Levels levels = VigilantePower.forFollowers(
+            followers, settings.followerStrengthCap(), settings.followerResistanceCap()
+        );
+        apply(vigilante, PotionEffectType.STRENGTH, levels.strength());
+        apply(vigilante, PotionEffectType.RESISTANCE, levels.resistance());
+    }
+
+    public void clear() {
+        previousVigilante.map(server::getPlayer).ifPresent(this::removeManagedEffects);
+        previousVigilante = Optional.empty();
+        tracker.clear();
+    }
+
+    private int nearbyLivingFollowers(UUID vigilanteId, Player vigilante) {
+        int count = 0;
+        double rangeSquared = settings.followerRangeBlocks()
+            * settings.followerRangeBlocks();
+        for (PlayerState state : stateManager.players().values()) {
+            if (state.followerOf().filter(vigilanteId::equals).isEmpty()
+                    || state.optedOutUntil().isPresent()) {
+                continue;
+            }
+            Player follower = server.getPlayer(state.playerId());
+            if (follower == null || follower.isDead()
+                    || !follower.getWorld().equals(vigilante.getWorld())) {
+                continue;
+            }
+            if (follower.getLocation().distanceSquared(vigilante.getLocation()) <= rangeSquared) {
+                count++;
+            }
+        }
+        return count;
+    }
+
+    private static void apply(Player player, PotionEffectType type, int level) {
+        if (level == 0) {
+            player.removePotionEffect(type);
+            return;
+        }
+        player.addPotionEffect(new PotionEffect(
+            type, EFFECT_TICKS, level - 1, false, true, true
+        ));
+    }
+
+    private void removeManagedEffects(Player player) {
+        player.removePotionEffect(PotionEffectType.STRENGTH);
+        player.removePotionEffect(PotionEffectType.RESISTANCE);
+    }
+}

src/main/java/games/dmg/spigottyrant/VigilantePower.java

@@ -0,0 +1,23 @@
+package games.dmg.spigottyrant;
+
+public final class VigilantePower {
+    private VigilantePower() {
+    }
+
+    public static Levels forFollowers(
+        int followerCount,
+        int strengthCap,
+        int resistanceCap
+    ) {
+        if (followerCount < 0 || strengthCap < 1 || resistanceCap < 1) {
+            throw new IllegalArgumentException("follower count and caps are invalid");
+        }
+        return new Levels(
+            Math.min(followerCount, strengthCap),
+            Math.min(followerCount, resistanceCap)
+        );
+    }
+
+    public record Levels(int strength, int resistance) {
+    }
+}

src/main/resources/config.yml

@@ -35,11 +35,15 @@ fixer-item:
 tamer-item:
   material: FISHING_ROD
   name: Tamer's Lead
+captured-mob-item:
+  material: PAPER
+  name: Captured Mob
 denied-mob-types:
   - ENDER_DRAGON
   - WITHER
 
 # Tyrant and Vigilante effects
+vigilante-combat-seconds: 15
 roster-intelligence-cooldown-seconds: 86400
 tyrant-strength-level: 1
 tyrant-resistance-level: 1

src/main/resources/plugin.yml

@@ -7,7 +7,10 @@ author: dmg.games
 commands:
   tyrant:
     description: View and use Spigot Tyrant game features.
-    usage: /tyrant <status|choices|buy|assign|optout|optin|relinquish confirm>
+    usage: /tyrant <status|choices|buy|assign|item|intelligence|optout|optin|relinquish confirm>
+  vigilante:
+    description: Manage Vigilante Followers.
+    usage: /vigilante <invite <player>|accept|dismiss <player>|leave>
   tyrantadmin:
     description: Administer the Spigot Tyrant game.
     usage: /tyrantadmin <status|start|pause|resume|reset confirm>

src/test/java/games/dmg/spigottyrant/AbilityReadinessServiceTest.java

@@ -0,0 +1,60 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+
+final class AbilityReadinessServiceTest {
+    private static final Instant NOW = Instant.parse("2026-08-14T12:00:00Z");
+    private final AbilityReadinessService service = new AbilityReadinessService();
+
+    @Test
+    void successfulCooldownActivationConsumesItemAndRefreshRestoresIt() {
+        PlayerState ready = player(
+            TyrantClass.ASSASSIN, Map.of(), Set.of(Ability.ASSASSIN_INVISIBILITY)
+        );
+
+        PlayerState used = service.consume(
+            ready, Ability.ASSASSIN_INVISIBILITY, NOW, Duration.ofHours(1)
+        );
+        PlayerState refreshed = service.refresh(used, NOW.plus(Duration.ofHours(1)));
+
+        assertEquals(Set.of(), used.readyAbilityItems());
+        assertEquals(NOW.plus(Duration.ofHours(1)),
+            used.cooldownEnds().get(Ability.ASSASSIN_INVISIBILITY));
+        assertEquals(Set.of(Ability.ASSASSIN_INVISIBILITY),
+            refreshed.readyAbilityItems());
+        assertEquals(Map.of(), refreshed.cooldownEnds());
+    }
+
+    @Test
+    void tamerItemRemainsReadyWithoutCooldown() {
+        PlayerState tamer = player(
+            TyrantClass.TAMER, Map.of(), Set.of(Ability.TAMER_CAPTURE)
+        );
+
+        PlayerState after = service.consume(
+            tamer, Ability.TAMER_CAPTURE, NOW, Duration.ZERO
+        );
+
+        assertEquals(tamer, after);
+    }
+
+    private static PlayerState player(
+        TyrantClass tyrantClass,
+        Map<Ability, Instant> cooldowns,
+        Set<Ability> ready
+    ) {
+        return new PlayerState(
+            UUID.fromString("11111111-1111-1111-1111-111111111111"), "Player",
+            Optional.empty(), Optional.empty(), tyrantClass, Optional.empty(),
+            cooldowns, ready, java.util.List.of()
+        );
+    }
+}

src/test/java/games/dmg/spigottyrant/AssassinAbilityServiceTest.java

@@ -0,0 +1,60 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.time.Instant;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+
+final class AssassinAbilityServiceTest {
+    private static final Instant NOW = Instant.parse("2026-08-14T12:00:00Z");
+    private final PluginSettings settings = PluginSettings.from(Map.of());
+    private final AssassinAbilityService service = new AssassinAbilityService(
+        new AbilityReadinessService(), settings
+    );
+
+    @Test
+    void invisibilityConsumesItemAndDoublesDurationNearTyrant() {
+        PlayerState ready = assassin(Set.of(Ability.ASSASSIN_INVISIBILITY), Map.of());
+
+        AbilityUseResult normal = service.activateInvisibility(ready, NOW, false);
+        AbilityUseResult near = service.activateInvisibility(ready, NOW, true);
+
+        assertEquals(AbilityUseStatus.ACTIVATED, normal.status());
+        assertEquals(NOW.plusSeconds(600), normal.player().cooldownEnds()
+            .get(Ability.ASSASSIN_INVISIBILITY_ACTIVE));
+        assertEquals(NOW.plusSeconds(1200), near.player().cooldownEnds()
+            .get(Ability.ASSASSIN_INVISIBILITY_ACTIVE));
+        assertEquals(NOW.plusSeconds(3600), normal.player().cooldownEnds()
+            .get(Ability.ASSASSIN_INVISIBILITY));
+        assertEquals(Set.of(), normal.player().readyAbilityItems());
+    }
+
+    @Test
+    void doubleJumpAddsSpeedWeaknessAndSixtySecondCooldown() {
+        PlayerState assassin = assassin(Set.of(), Map.of());
+
+        AbilityUseResult result = service.doubleJump(assassin, NOW);
+        AbilityUseResult blocked = service.doubleJump(result.player(), NOW.plusSeconds(30));
+
+        assertEquals(AbilityUseStatus.ACTIVATED, result.status());
+        assertEquals(NOW.plusSeconds(60), result.player().cooldownEnds()
+            .get(Ability.ASSASSIN_DOUBLE_JUMP));
+        assertEquals(NOW.plusSeconds(15), result.player().cooldownEnds()
+            .get(Ability.ASSASSIN_SPEED_ACTIVE));
+        assertEquals(NOW.plusSeconds(20), result.player().cooldownEnds()
+            .get(Ability.ASSASSIN_WEAKNESS_ACTIVE));
+        assertEquals(AbilityUseStatus.COOLDOWN, blocked.status());
+    }
+
+    private static PlayerState assassin(Set<Ability> ready, Map<Ability, Instant> cooldowns) {
+        return new PlayerState(
+            UUID.fromString("11111111-1111-1111-1111-111111111111"), "Assassin",
+            Optional.empty(), Optional.empty(), TyrantClass.ASSASSIN, Optional.empty(),
+            cooldowns, ready, java.util.List.of()
+        );
+    }
+}

src/test/java/games/dmg/spigottyrant/AssassinEffectControllerTest.java

@@ -0,0 +1,145 @@
+package games.dmg.spigottyrant;
+
+import static org.mockito.Mockito.clearInvocations;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.verifyNoInteractions;
+import static org.mockito.Mockito.when;
+
+import java.nio.file.Path;
+import java.time.Clock;
+import java.time.Instant;
+import java.time.ZoneOffset;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import java.util.logging.Logger;
+import org.bukkit.Server;
+import org.bukkit.entity.Player;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+final class AssassinEffectControllerTest {
+    private static final Instant NOW = Instant.parse("2026-08-18T12:00:00Z");
+    private static final UUID PLAYER_ID = UUID.fromString(
+        "11111111-1111-1111-1111-111111111111"
+    );
+
+    @TempDir
+    Path temporaryDirectory;
+
+    @Test
+    void doesNotRemovePotionEffectsItDidNotApply() throws Exception {
+        TyrantStateManager stateManager = manager();
+        Player player = player();
+        Server server = server(player);
+        AssassinEffectController.EffectApplier effects = mock(
+            AssassinEffectController.EffectApplier.class
+        );
+        AssassinEffectController controller = controller(stateManager, server, effects);
+
+        controller.run();
+        controller.clearAll();
+
+        verifyNoInteractions(effects);
+    }
+
+    @Test
+    void stopsRefreshingManagedInvisibilityAfterItsDeadline() throws Exception {
+        TyrantStateManager stateManager = manager();
+        stateManager.updateGame(ignored -> runningGame());
+        stateManager.updatePlayer(PLAYER_ID, "Assassin", ignored -> assassin(Map.of(
+            Ability.ASSASSIN_INVISIBILITY_ACTIVE, NOW.plusSeconds(60),
+            Ability.ASSASSIN_DOUBLE_JUMP, NOW.plusSeconds(60)
+        )));
+        Player player = player();
+        Server server = server(player);
+        AssassinEffectController.EffectApplier effects = mock(
+            AssassinEffectController.EffectApplier.class
+        );
+        AssassinEffectController controller = controller(stateManager, server, effects);
+
+        controller.run();
+
+        verify(effects).apply(
+            player,
+            AssassinEffectController.EffectKind.INVISIBILITY,
+            0,
+            false
+        );
+
+        stateManager.updatePlayer(PLAYER_ID, "Assassin", ignored -> assassin(Map.of(
+            Ability.ASSASSIN_DOUBLE_JUMP, NOW.plusSeconds(60)
+        )));
+        clearInvocations(player, effects);
+        controller.run();
+
+        verifyNoInteractions(effects);
+    }
+
+    private TyrantStateManager manager() throws Exception {
+        return new TyrantStateManager(
+            new YamlTyrantStateRepository(temporaryDirectory.resolve("state.yml")),
+            Logger.getLogger("test")
+        );
+    }
+
+    private static AssassinEffectController controller(
+        TyrantStateManager stateManager,
+        Server server,
+        AssassinEffectController.EffectApplier effects
+    ) {
+        return new AssassinEffectController(
+            stateManager,
+            server,
+            PluginSettings.from(Map.of()),
+            Clock.fixed(NOW, ZoneOffset.UTC),
+            effects
+        );
+    }
+
+    private static Server server(Player player) {
+        Server server = mock(Server.class);
+        doReturn(List.of(player)).when(server).getOnlinePlayers();
+        return server;
+    }
+
+    private static Player player() {
+        Player player = mock(Player.class);
+        when(player.getUniqueId()).thenReturn(PLAYER_ID);
+        when(player.getName()).thenReturn("Assassin");
+        return player;
+    }
+
+    private static PlayerState assassin(Map<Ability, Instant> cooldowns) {
+        return new PlayerState(
+            PLAYER_ID,
+            "Assassin",
+            Optional.empty(),
+            Optional.empty(),
+            TyrantClass.ASSASSIN,
+            Optional.empty(),
+            cooldowns,
+            Set.of(),
+            List.of()
+        );
+    }
+
+    private static GameState runningGame() {
+        return new GameState(
+            GameLifecycle.RUNNING,
+            Optional.empty(),
+            Optional.empty(),
+            Optional.empty(),
+            Optional.empty(),
+            Optional.empty(),
+            java.time.Duration.ZERO,
+            0,
+            0,
+            Set.of()
+        );
+    }
+}

src/test/java/games/dmg/spigottyrant/CapturedMobServiceTest.java

@@ -0,0 +1,46 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+
+final class CapturedMobServiceTest {
+    private final CapturedMobService service = new CapturedMobService();
+
+    @Test
+    void captureAddsSnapshotAndSuccessfulReleaseRemovesExactlyThatMob() {
+        UUID captureId = UUID.fromString("aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa");
+        PlayerState tamer = tamer();
+
+        PlayerState captured = service.capture(
+            tamer, captureId, "ZOMBIE", "{id:\"minecraft:zombie\"}"
+        );
+        CapturedMob mob = service.find(captured, captureId).orElseThrow();
+        PlayerState released = service.release(captured, captureId);
+
+        assertEquals("ZOMBIE", mob.entityType());
+        assertEquals("{id:\"minecraft:zombie\"}", mob.data().get("snapshot"));
+        assertEquals(java.util.List.of(), released.capturedMobs());
+    }
+
+    @Test
+    void enderDragonCanNeverBeCapturedAndMissingReleaseDoesNotMutate() {
+        assertThrows(IllegalArgumentException.class, () -> service.capture(
+            tamer(), UUID.randomUUID(), "ENDER_DRAGON", "snapshot"
+        ));
+        assertEquals(tamer(), service.release(tamer(), UUID.randomUUID()));
+    }
+
+    private static PlayerState tamer() {
+        return new PlayerState(
+            UUID.fromString("11111111-1111-1111-1111-111111111111"), "Tamer",
+            Optional.empty(), Optional.empty(), TyrantClass.TAMER, Optional.empty(),
+            Map.of(), Set.of(Ability.TAMER_CAPTURE), java.util.List.of()
+        );
+    }
+}

src/test/java/games/dmg/spigottyrant/ClassAssignmentServiceTest.java

@@ -46,6 +46,8 @@ final class ClassAssignmentServiceTest {
         assertEquals(ClassAssignmentStatus.ASSIGNED, vigilanteResult.status());
         assertEquals(TyrantClass.ASSASSIN,
             vigilanteResult.players().get(VIGILANTE).tyrantClass());
+        assertEquals(Set.of(Ability.ASSASSIN_INVISIBILITY),
+            vigilanteResult.players().get(VIGILANTE).readyAbilityItems());
         assertEquals(ClassAssignmentStatus.ASSIGNED, followerResult.status());
         assertEquals(TyrantClass.NONE,
             followerResult.players().get(VIGILANTE).tyrantClass());

src/test/java/games/dmg/spigottyrant/FixerAbilityServiceTest.java

@@ -0,0 +1,37 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.time.Instant;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+
+final class FixerAbilityServiceTest {
+    private static final Instant NOW = Instant.parse("2026-08-14T12:00:00Z");
+    private final FixerAbilityService service = new FixerAbilityService(
+        new AbilityReadinessService(), PluginSettings.from(Map.of())
+    );
+
+    @Test
+    void boostConsumesItemAndRecordsNormalOrNearTyrantHeartTier() {
+        PlayerState ready = new PlayerState(
+            UUID.fromString("11111111-1111-1111-1111-111111111111"), "Fixer",
+            Optional.empty(), Optional.empty(), TyrantClass.FIXER, Optional.empty(),
+            Map.of(), Set.of(Ability.FIXER_BOOST), java.util.List.of()
+        );
+
+        FixerUseResult normal = service.activate(ready, NOW, false);
+        FixerUseResult near = service.activate(ready, NOW, true);
+
+        assertEquals(AbilityUseStatus.ACTIVATED, normal.status());
+        assertEquals(2, normal.heartRows());
+        assertEquals(3, near.heartRows());
+        assertEquals(NOW.plusSeconds(600), normal.player().cooldownEnds()
+            .get(Ability.FIXER_BOOST_ACTIVE));
+        assertEquals(NOW.plusSeconds(3600), normal.player().cooldownEnds()
+            .get(Ability.FIXER_BOOST));
+    }
+}

src/test/java/games/dmg/spigottyrant/FollowerServiceTest.java

@@ -0,0 +1,70 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.time.Duration;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+
+final class FollowerServiceTest {
+    private static final UUID TYRANT = UUID.fromString("11111111-1111-1111-1111-111111111111");
+    private static final UUID VIGILANTE = UUID.fromString("22222222-2222-2222-2222-222222222222");
+    private static final UUID FOLLOWER = UUID.fromString("33333333-3333-3333-3333-333333333333");
+    private final FollowerService service = new FollowerService();
+
+    @Test
+    void invitationRequiresAcceptanceAndPreservesTyrantClass() {
+        GameState game = game();
+        PlayerState target = new PlayerState(
+            FOLLOWER, "Follower", Optional.empty(), Optional.empty(), TyrantClass.FIXER,
+            Optional.empty(), Map.of(), Set.of(), java.util.List.of()
+        );
+        Map<UUID, PlayerState> players = Map.of(FOLLOWER, target);
+
+        FollowerResult invited = service.invite(game, players, VIGILANTE, FOLLOWER);
+        FollowerResult accepted = service.accept(game, invited.players(), FOLLOWER);
+
+        assertEquals(FollowerStatus.INVITED, invited.status());
+        assertEquals(Optional.empty(), invited.players().get(FOLLOWER).followerOf());
+        assertEquals(FollowerStatus.JOINED, accepted.status());
+        assertEquals(Optional.of(VIGILANTE), accepted.players().get(FOLLOWER).followerOf());
+        assertEquals(TyrantClass.FIXER, accepted.players().get(FOLLOWER).tyrantClass());
+    }
+
+    @Test
+    void vigilanteCanDismissAndFollowerCanLeave() {
+        GameState game = game();
+        PlayerState follower = withFollower(PlayerState.newPlayer(FOLLOWER, "Follower"));
+
+        FollowerResult dismissed = service.dismiss(
+            game, Map.of(FOLLOWER, follower), VIGILANTE, FOLLOWER
+        );
+        FollowerResult left = service.leave(
+            game, Map.of(FOLLOWER, follower), FOLLOWER
+        );
+
+        assertEquals(FollowerStatus.DISMISSED, dismissed.status());
+        assertEquals(Optional.empty(), dismissed.players().get(FOLLOWER).followerOf());
+        assertEquals(FollowerStatus.LEFT, left.status());
+        assertEquals(Optional.empty(), left.players().get(FOLLOWER).followerOf());
+    }
+
+    private static GameState game() {
+        return new GameState(
+            GameLifecycle.RUNNING, Optional.of(TYRANT), Optional.of(VIGILANTE),
+            Optional.empty(), Optional.empty(), Optional.empty(), Duration.ZERO,
+            0, 0, Set.of()
+        );
+    }
+
+    private static PlayerState withFollower(PlayerState player) {
+        return new PlayerState(
+            player.playerId(), player.latestName(), player.lastLogin(), player.optedOutUntil(),
+            player.tyrantClass(), Optional.of(VIGILANTE), player.cooldownEnds(),
+            player.readyAbilityItems(), player.capturedMobs()
+        );
+    }
+}

src/test/java/games/dmg/spigottyrant/OptOutGlowControllerTest.java

@@ -0,0 +1,97 @@
+package games.dmg.spigottyrant;
+
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.bukkit.ChatColor;
+import org.bukkit.Location;
+import org.bukkit.Server;
+import org.bukkit.World;
+import org.bukkit.entity.Player;
+import org.bukkit.scoreboard.Scoreboard;
+import org.bukkit.scoreboard.ScoreboardManager;
+import org.bukkit.scoreboard.Team;
+import org.junit.jupiter.api.Test;
+
+final class OptOutGlowControllerTest {
+    private static final UUID TYRANT = UUID.fromString(
+        "11111111-1111-1111-1111-111111111111"
+    );
+    private static final UUID OUT = UUID.fromString(
+        "22222222-2222-2222-2222-222222222222"
+    );
+
+    @Test
+    void appliesGreenGlowAndRestoresPreviousTeamAfterLeavingRange() {
+        TyrantStateManager stateManager = mock(TyrantStateManager.class);
+        Server server = mock(Server.class);
+        PluginSettings settings = mock(PluginSettings.class);
+        ScoreboardManager manager = mock(ScoreboardManager.class);
+        Scoreboard scoreboard = mock(Scoreboard.class);
+        Team green = mock(Team.class);
+        Team previous = mock(Team.class);
+        Player tyrant = player(TYRANT, "Tyrant");
+        Player optedOut = player(OUT, "Out");
+        World world = mock(World.class);
+        Location tyrantLocation = mock(Location.class);
+        Location outLocation = mock(Location.class);
+        when(server.getScoreboardManager()).thenReturn(manager);
+        when(manager.getMainScoreboard()).thenReturn(scoreboard);
+        when(scoreboard.getTeam("tyrant-optout")).thenReturn(null);
+        when(scoreboard.registerNewTeam("tyrant-optout")).thenReturn(green);
+        when(scoreboard.getEntryTeam("Out")).thenReturn(previous);
+        when(server.getPlayer(TYRANT)).thenReturn(tyrant);
+        doReturn(Set.of(tyrant, optedOut)).when(server).getOnlinePlayers();
+        when(settings.tyrantRangeBlocks()).thenReturn(50.0);
+        when(tyrant.getWorld()).thenReturn(world);
+        when(optedOut.getWorld()).thenReturn(world);
+        when(tyrant.getLocation()).thenReturn(tyrantLocation);
+        when(optedOut.getLocation()).thenReturn(outLocation);
+        when(outLocation.distanceSquared(tyrantLocation)).thenReturn(25.0, 2601.0);
+        when(stateManager.game()).thenReturn(running());
+        when(stateManager.players()).thenReturn(Map.of(OUT, optedOut()));
+        OptOutGlowController controller = new OptOutGlowController(
+            stateManager, server, settings
+        );
+
+        controller.run();
+        controller.run();
+
+        verify(green).setColor(ChatColor.GREEN);
+        verify(green).addEntry("Out");
+        verify(optedOut).setGlowing(true);
+        verify(green).removeEntry("Out");
+        verify(previous).addEntry("Out");
+        verify(optedOut).setGlowing(false);
+    }
+
+    private static Player player(UUID id, String name) {
+        Player player = mock(Player.class);
+        when(player.getUniqueId()).thenReturn(id);
+        when(player.getName()).thenReturn(name);
+        return player;
+    }
+
+    private static PlayerState optedOut() {
+        return new PlayerState(
+            OUT, "Out", Optional.empty(), Optional.of(Instant.MAX), TyrantClass.NONE,
+            Optional.empty(), Map.of(), Set.of(), java.util.List.of()
+        );
+    }
+
+    private static GameState running() {
+        return new GameState(
+            GameLifecycle.RUNNING, Optional.of(TYRANT), Optional.empty(),
+            Optional.empty(), Optional.empty(), Optional.empty(), Duration.ZERO,
+            0, 0, Set.of()
+        );
+    }
+}

src/test/java/games/dmg/spigottyrant/OptOutGlowPolicyTest.java

@@ -0,0 +1,76 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+
+final class OptOutGlowPolicyTest {
+    private static final UUID TYRANT = UUID.fromString(
+        "11111111-1111-1111-1111-111111111111"
+    );
+    private static final UUID PLAYER = UUID.fromString(
+        "22222222-2222-2222-2222-222222222222"
+    );
+
+    @Test
+    void optedOutPlayerGlowsWithinInclusiveRunningRange() {
+        assertTrue(OptOutGlowPolicy.shouldGlow(
+            running(), optedOut(), true, true, 2500.0, 50.0
+        ));
+    }
+
+    @Test
+    void requiresRunningEventAvailablePlayersSameWorldAndRange() {
+        assertFalse(OptOutGlowPolicy.shouldGlow(
+            GameState.empty(), optedOut(), true, true, 1.0, 50.0
+        ));
+        assertFalse(OptOutGlowPolicy.shouldGlow(
+            paused(), optedOut(), true, true, 1.0, 50.0
+        ));
+        assertFalse(OptOutGlowPolicy.shouldGlow(
+            running(), optedIn(), true, true, 1.0, 50.0
+        ));
+        assertFalse(OptOutGlowPolicy.shouldGlow(
+            running(), optedOut(), false, true, 1.0, 50.0
+        ));
+        assertFalse(OptOutGlowPolicy.shouldGlow(
+            running(), optedOut(), true, false, 1.0, 50.0
+        ));
+        assertFalse(OptOutGlowPolicy.shouldGlow(
+            running(), optedOut(), true, true, 2500.01, 50.0
+        ));
+    }
+
+    private static PlayerState optedOut() {
+        return new PlayerState(
+            PLAYER, "Player", Optional.empty(), Optional.of(Instant.MAX),
+            TyrantClass.NONE, Optional.empty(), Map.of(), Set.of(), java.util.List.of()
+        );
+    }
+
+    private static PlayerState optedIn() {
+        return PlayerState.newPlayer(PLAYER, "Player");
+    }
+
+    private static GameState running() {
+        return game(GameLifecycle.RUNNING, Optional.empty());
+    }
+
+    private static GameState paused() {
+        return game(GameLifecycle.PAUSED, Optional.of(Instant.EPOCH));
+    }
+
+    private static GameState game(GameLifecycle lifecycle, Optional<Instant> pausedAt) {
+        return new GameState(
+            lifecycle, Optional.of(TYRANT), Optional.empty(), Optional.empty(),
+            Optional.empty(), pausedAt, Duration.ZERO, 0, 0, Set.of()
+        );
+    }
+}

src/test/java/games/dmg/spigottyrant/ParticipationCombatListenerTest.java

@@ -0,0 +1,75 @@
+package games.dmg.spigottyrant;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.bukkit.ChatColor;
+import org.bukkit.entity.Player;
+import org.bukkit.entity.Projectile;
+import org.bukkit.event.entity.EntityDamageByEntityEvent;
+import org.junit.jupiter.api.Test;
+
+final class ParticipationCombatListenerTest {
+    private static final UUID TYRANT = UUID.fromString(
+        "11111111-1111-1111-1111-111111111111"
+    );
+    private static final UUID OUT = UUID.fromString(
+        "22222222-2222-2222-2222-222222222222"
+    );
+
+    @Test
+    void cancelsPlayerProjectileAndMessagesTheAttacker() {
+        TyrantStateManager manager = mock(TyrantStateManager.class);
+        Player attacker = player(TYRANT, "Tyrant");
+        Player target = player(OUT, "Out");
+        Projectile projectile = mock(Projectile.class);
+        EntityDamageByEntityEvent event = mock(EntityDamageByEntityEvent.class);
+        when(projectile.getShooter()).thenReturn(attacker);
+        when(event.getDamager()).thenReturn(projectile);
+        when(event.getEntity()).thenReturn(target);
+        when(manager.game()).thenReturn(running());
+        when(manager.players()).thenReturn(Map.of(
+            TYRANT, state(TYRANT, TyrantClass.NONE, false),
+            OUT, state(OUT, TyrantClass.NONE, true)
+        ));
+        ParticipationCombatListener listener = new ParticipationCombatListener(
+            manager, new ParticipationCombatService()
+        );
+
+        listener.onDamage(event);
+
+        verify(event).setCancelled(true);
+        verify(attacker).sendMessage(ChatColor.YELLOW
+            + ParticipationCombatListener.OPTED_OUT_MESSAGE);
+    }
+
+    private static Player player(UUID id, String name) {
+        Player player = mock(Player.class);
+        when(player.getUniqueId()).thenReturn(id);
+        when(player.getName()).thenReturn(name);
+        return player;
+    }
+
+    private static PlayerState state(UUID id, TyrantClass role, boolean optedOut) {
+        return new PlayerState(
+            id, id.toString(), Optional.empty(),
+            optedOut ? Optional.of(Instant.parse("2026-08-21T00:00:00Z")) : Optional.empty(),
+            role, Optional.empty(), Map.of(), Set.of(), java.util.List.of()
+        );
+    }
+
+    private static GameState running() {
+        return new GameState(
+            GameLifecycle.RUNNING, Optional.of(TYRANT), Optional.empty(),
+            Optional.empty(), Optional.empty(), Optional.empty(), Duration.ZERO,
+            0, 0, Set.of()
+        );
+    }
+}

src/test/java/games/dmg/spigottyrant/ParticipationCombatServiceTest.java

@@ -0,0 +1,90 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+
+final class ParticipationCombatServiceTest {
+    private static final UUID TYRANT = UUID.fromString(
+        "11111111-1111-1111-1111-111111111111"
+    );
+    private static final UUID OUTSIDER = UUID.fromString(
+        "22222222-2222-2222-2222-222222222222"
+    );
+    private static final UUID SUPPORTER = UUID.fromString(
+        "33333333-3333-3333-3333-333333333333"
+    );
+    private final ParticipationCombatService service = new ParticipationCombatService();
+
+    @Test
+    void blocksDamageInBothDirectionsBetweenOptedOutPlayerAndTyrantSide() {
+        PlayerState optedOut = player(OUTSIDER, TyrantClass.NONE, true);
+        PlayerState tyrant = player(TYRANT, TyrantClass.NONE, false);
+        PlayerState supporter = player(SUPPORTER, TyrantClass.ASSASSIN, false);
+
+        assertTrue(service.blocks(running(), tyrant, optedOut));
+        assertTrue(service.blocks(running(), optedOut, tyrant));
+        assertTrue(service.blocks(running(), supporter, optedOut));
+        assertTrue(service.blocks(running(), optedOut, supporter));
+    }
+
+    @Test
+    void recognizesEveryTyrantSideClassAsSupport() {
+        PlayerState optedOut = player(OUTSIDER, TyrantClass.NONE, true);
+
+        assertTrue(service.blocks(
+            running(), player(SUPPORTER, TyrantClass.ASSASSIN, false), optedOut
+        ));
+        assertTrue(service.blocks(
+            running(), player(SUPPORTER, TyrantClass.FIXER, false), optedOut
+        ));
+        assertTrue(service.blocks(
+            running(), player(SUPPORTER, TyrantClass.TAMER, false), optedOut
+        ));
+    }
+
+    @Test
+    void leavesPausedUnstartedAndUnrelatedCombatAlone() {
+        PlayerState optedOut = player(OUTSIDER, TyrantClass.NONE, true);
+        PlayerState tyrant = player(TYRANT, TyrantClass.NONE, false);
+        PlayerState ordinary = player(SUPPORTER, TyrantClass.NONE, false);
+
+        assertFalse(service.blocks(paused(), tyrant, optedOut));
+        assertFalse(service.blocks(GameState.empty(), tyrant, optedOut));
+        assertFalse(service.blocks(running(), tyrant, ordinary));
+        assertFalse(service.blocks(running(), ordinary, optedOut));
+    }
+
+    private static PlayerState player(UUID id, TyrantClass role, boolean optedOut) {
+        return new PlayerState(
+            id, id.toString(), Optional.empty(),
+            optedOut ? Optional.of(Instant.parse("2026-08-21T00:00:00Z")) : Optional.empty(),
+            role, Optional.empty(), Map.of(), Set.of(), java.util.List.of()
+        );
+    }
+
+    private static GameState running() {
+        return game(GameLifecycle.RUNNING, Optional.empty());
+    }
+
+    private static GameState paused() {
+        return game(
+            GameLifecycle.PAUSED,
+            Optional.of(Instant.parse("2026-08-14T00:00:00Z"))
+        );
+    }
+
+    private static GameState game(GameLifecycle lifecycle, Optional<Instant> pausedAt) {
+        return new GameState(
+            lifecycle, Optional.of(TYRANT), Optional.empty(), Optional.empty(),
+            Optional.empty(), pausedAt, Duration.ZERO, 0, 0, Set.of()
+        );
+    }
+}

src/test/java/games/dmg/spigottyrant/PlayerStatusMessagesTest.java

@@ -1,5 +1,6 @@
 package games.dmg.spigottyrant;
 
+import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.time.Duration;
@@ -29,7 +30,8 @@ final class PlayerStatusMessagesTest {
 
         List<String> messages = PlayerStatusMessages.forJoin(game, player, NOW);
 
-        assertTrue(messages.stream().anyMatch(message -> message.contains("Game: RUNNING")));
+        assertFalse(messages.stream().anyMatch(message -> message.startsWith("Game:")));
+        assertFalse(messages.stream().anyMatch(message -> message.startsWith("Tyrant event:")));
         assertTrue(messages.stream().anyMatch(message -> message.contains("Role: VIGILANTE")));
         assertTrue(messages.stream().anyMatch(message -> message.contains("Class: ASSASSIN")));
         assertTrue(messages.stream().anyMatch(message -> message.contains("ASSASSIN_INVISIBILITY")
@@ -42,6 +44,8 @@ final class PlayerStatusMessagesTest {
             GameState.empty(), PlayerState.newPlayer(PLAYER, "Player"), NOW
         );
 
-        assertTrue(messages.stream().anyMatch(message -> message.contains("/tyrant optout")));
+        assertTrue(messages.contains(
+            "Use /tyrant optout if you do not want to participate in Tyrant events."
+        ));
     }
 }

src/test/java/games/dmg/spigottyrant/PluginMetadataTest.java

@@ -24,6 +24,7 @@ final class PluginMetadataTest {
         assertNotNull(commands);
         assertNotNull(commands.get("tyrant"));
         assertNotNull(commands.get("tyrantadmin"));
+        assertNotNull(commands.get("vigilante"));
         Map<?, ?> permissions = (Map<?, ?>) plugin.get("permissions");
         assertNotNull(permissions);
         Map<?, ?> admin = (Map<?, ?>) permissions.get("spigottyrant.admin");

src/test/java/games/dmg/spigottyrant/TyrantAbilityServiceTest.java

@@ -0,0 +1,49 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+
+final class TyrantAbilityServiceTest {
+    private static final UUID TYRANT = UUID.fromString("11111111-1111-1111-1111-111111111111");
+    private static final UUID VIGILANTE = UUID.fromString("22222222-2222-2222-2222-222222222222");
+    private static final UUID FOLLOWER = UUID.fromString("33333333-3333-3333-3333-333333333333");
+    private static final Instant NOW = Instant.parse("2026-08-14T12:00:00Z");
+    private final TyrantAbilityService service = new TyrantAbilityService(
+        Duration.ofHours(24)
+    );
+
+    @Test
+    void intelligenceCountsVigilanteSideWithoutIdentitiesAndStartsCooldown() {
+        GameState game = new GameState(
+            GameLifecycle.RUNNING, Optional.of(TYRANT), Optional.of(VIGILANTE),
+            Optional.empty(), Optional.empty(), Optional.empty(), Duration.ZERO,
+            1, 0, Set.of(TyrantUnlock.ROSTER_INTELLIGENCE)
+        );
+        PlayerState tyrant = PlayerState.newPlayer(TYRANT, "Tyrant");
+        PlayerState follower = new PlayerState(
+            FOLLOWER, "Follower", Optional.empty(), Optional.empty(), TyrantClass.NONE,
+            Optional.of(VIGILANTE), Map.of(), Set.of(), java.util.List.of()
+        );
+
+        IntelligenceResult used = service.useIntelligence(
+            game, tyrant, Map.of(TYRANT, tyrant, FOLLOWER, follower), NOW
+        );
+        IntelligenceResult blocked = service.useIntelligence(
+            game, used.tyrant(), Map.of(TYRANT, used.tyrant(), FOLLOWER, follower),
+            NOW.plusSeconds(1)
+        );
+
+        assertEquals(AbilityUseStatus.ACTIVATED, used.status());
+        assertEquals(2, used.memberCount());
+        assertEquals(NOW.plus(Duration.ofHours(24)), used.tyrant().cooldownEnds()
+            .get(Ability.ROSTER_INTELLIGENCE));
+        assertEquals(AbilityUseStatus.COOLDOWN, blocked.status());
+    }
+}

src/test/java/games/dmg/spigottyrant/VigilantePowerTest.java

@@ -0,0 +1,14 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import org.junit.jupiter.api.Test;
+
+final class VigilantePowerTest {
+    @Test
+    void oneLevelPerNearbyFollowerIsCappedSafely() {
+        assertEquals(new VigilantePower.Levels(3, 3), VigilantePower.forFollowers(3, 5, 4));
+        assertEquals(new VigilantePower.Levels(5, 4), VigilantePower.forFollowers(10, 5, 4));
+        assertEquals(new VigilantePower.Levels(0, 0), VigilantePower.forFollowers(0, 5, 4));
+    }
+}