feat(assassin): add stealth and double jump

design/log.md

@@ -6,6 +6,54 @@ description: Chronological record of material decisions affecting the Spigot Tyr
 
 # Spigot Tyrant Design Log
 
+## 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 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.
+- Opt-out clears ordinary classes and Follower membership, persists until the player explicitly opts back in, and enforces the configurable seven-day unpaused waiting period.
+- Central role holders must safely relinquish first; Tyrant relinquishment performs full succession and Vigilante relinquishment performs a normal Vigilante reroll.
+- Updated all assignment and candidate paths to exclude opted-out players and verified status, persistence, cleanup, cooldown, and relinquishment behavior with the Gradle suite.
+
+## 2026-08-14 — Participation implementation started
+
+- US-011 begins with test-first opt-out/opt-in state, seven-day re-entry gating, safe role relinquishment guidance, and complete join status messages.
+
+## 2026-08-14 — Role maintenance completed
+
+- Completed US-010 with configurable periodic role maintenance, exact 48-hour inactivity handling, and 24-hour recently-active candidate filtering.
+- Added online confirmation for pending roles, 24-hour expiry and reroll, former-holder fallback rules, vacant-role retries, opt-out filtering, and Tyrant/Vigilante conflict prevention.
+- Tyrant inactivity uses full reign succession cleanup; Vigilante inactivity clears only that role's Followers before replacement.
+- Verified confirmation, expiry reroll, Follower cleanup, exact inactivity boundary, full Tyrant succession, and pause-safe scheduler integration with the Gradle suite.
+
+## 2026-08-14 — Role maintenance implementation started
+
+- US-010 begins with test-first inactivity replacement, pending confirmation and expiry, conflict-safe candidate retries, and pause awareness.
+
 ## 2026-08-14 — Tyrant succession completed
 
 - Completed US-002 with player-killer transfer, recent-player environmental succession, former-holder avoidance, pending offline confirmation, and distinct replacement Vigilante selection.

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 +11,15 @@ 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.
-- [ ] Invisibility displays no potion particles.
-- [ ] 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.
-- [ ] 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.
-- [ ] 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.
-- [ ] The player can inspect remaining cooldowns and receives clear feedback when an activation is unavailable.
+- [x] The Assassin can activate ten minutes of invisibility once per rolling hour using the named Assassin ability item.
+- [x] Invisibility displays no potion particles.
+- [x] Activation while in the same world and within the configured Tyrant range grants twenty minutes instead.
+- [x] Proximity is evaluated when the ability is activated and does not alter the active duration afterward.
+- [x] The Assassin can double-jump once every 60 seconds without requiring an item.
+- [x] A successful double-jump grants Speed for 15 seconds and Weakness III for 20 seconds.
+- [x] Grounding and supported movement reset jump availability only after the 60-second cooldown has elapsed.
+- [x] Ability cooldowns use unpaused elapsed time and survive death, logout, and restart.
+- [x] The player can inspect remaining cooldowns and receives clear feedback when an activation is unavailable.
 
 ## 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.
-- [ ] 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.
-- [ ] 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.
-- [ ] 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.
-- [ ] 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.
-- [ ] 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.
-- [ ] The Tyrant is never eligible to be selected as Vigilante.
+- [x] Exactly one active Vigilante exists while the game is running whenever an eligible player is available.
+- [x] The Vigilante can invite eligible opted-in players to become Followers, and recruitment requires acceptance.
+- [x] The Vigilante can dismiss Followers and Followers can leave voluntarily.
+- [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.
+- [x] Offline, dead, opted-out, dismissed, or out-of-range Followers do not count.
+- [x] A Vigilante or Follower may simultaneously hold one Tyrant-side class without losing Vigilante-side membership.
+- [x] Effect levels update promptly as combat starts or ends and as Followers move, die, respawn, disconnect, or change assignment.
+- [x] Scaling is capped by validated configuration, defaulting to Strength V and Resistance IV.
+- [x] Every Vigilante death ends the assignment and triggers random replacement regardless of cause.
+- [x] The deceased Vigilante is excluded when another eligible non-Tyrant candidate exists and is reused only when no such candidate exists.
+- [x] Followers are cleared rather than transferred when their Vigilante dies or loses the position.
+- [x] The Tyrant is never eligible to be selected as Vigilante.
 
 ## Related
 

design/user-stories/us-010-handle-inactivity-and-selection.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-010: Handle inactivity and pending selections"
 description: Replace absent or unconfirmed role holders using recently active eligible players.
-status: backlog
+status: done
 ---
 
 # US-010: Handle inactivity and pending selections
@@ -11,16 +11,16 @@ As a **participant**, I want inactive central roles to be replaced fairly so tha
 
 ## Acceptance criteria
 
-- [ ] A Tyrant or Vigilante who has not logged in for 48 unpaused hours loses the position.
-- [ ] Random candidates are drawn from eligible opted-in players who logged in during the preceding 24 hours.
-- [ ] The Tyrant is always excluded from Vigilante selection.
-- [ ] A previous role holder is excluded when another eligible candidate exists and may be reused only as a fallback.
-- [ ] Tyrant inactivity ends the reign, clears all assignments, and invokes normal random Tyrant succession followed by Vigilante selection.
-- [ ] Vigilante inactivity clears Followers and rerolls only the Vigilante position.
-- [ ] An offline randomly selected candidate must log in within 24 unpaused hours to confirm the assignment.
-- [ ] An unconfirmed selection expires and rerolls automatically under the same eligibility rules.
-- [ ] Selection remains vacant and retries periodically when no valid candidate exists.
-- [ ] Candidate selection cannot assign conflicting roles or choose an opted-out player, including during concurrent joins and deaths.
+- [x] A Tyrant or Vigilante who has not logged in for 48 unpaused hours loses the position.
+- [x] Random candidates are drawn from eligible opted-in players who logged in during the preceding 24 hours.
+- [x] The Tyrant is always excluded from Vigilante selection.
+- [x] A previous role holder is excluded when another eligible candidate exists and may be reused only as a fallback.
+- [x] Tyrant inactivity ends the reign, clears all assignments, and invokes normal random Tyrant succession followed by Vigilante selection.
+- [x] Vigilante inactivity clears Followers and rerolls only the Vigilante position.
+- [x] An offline randomly selected candidate must log in within 24 unpaused hours to confirm the assignment.
+- [x] An unconfirmed selection expires and rerolls automatically under the same eligibility rules.
+- [x] Selection remains vacant and retries periodically when no valid candidate exists.
+- [x] Candidate selection cannot assign conflicting roles or choose an opted-out player, including during concurrent joins and deaths.
 
 ## Related
 

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

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-011: Inform players and manage participation"
 description: Tell players their current place in the game and let unassigned players opt out.
-status: backlog
+status: done
 ---
 
 # US-011: Inform players and manage participation
@@ -11,15 +11,15 @@ As a **player**, I want to understand my status and control my eligibility so th
 
 ## Acceptance criteria
 
-- [ ] On join, a player is told the game status and their role, class, subclass, abilities, and relevant cooldowns.
-- [ ] An unassigned opted-in player is told that they are eligible and shown the opt-out command.
-- [ ] An opted-out player is told when they may opt back in.
-- [ ] An unassigned player can opt out through a command.
-- [ ] Opting out removes an ordinary class or Follower assignment immediately; the Tyrant and Vigilante must relinquish through a safe role command before opting out.
-- [ ] Opted-out players cannot be randomly selected, recruited, or assigned a class.
-- [ ] A player cannot opt back in until seven days have elapsed by default.
-- [ ] The opt-out duration is configurable, uses unpaused elapsed time, and survives restart.
-- [ ] Participation commands are idempotent and clearly report current status and remaining time.
+- [x] On join, a player is told the game status and their role, class, subclass, abilities, and relevant cooldowns.
+- [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.
+- [x] Opting out removes an ordinary class or Follower assignment immediately; the Tyrant and Vigilante must relinquish through a safe role command before opting out.
+- [x] Opted-out players cannot be randomly selected, recruited, or assigned a class.
+- [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.
 
 ## 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: in-progress
 ---
 
 # US-014: Use class ability items

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

@@ -2,8 +2,12 @@ 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,
     TAMER_CAPTURE,
     ROSTER_INTELLIGENCE
 }

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

@@ -0,0 +1,45 @@
+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;
+
+    public AbilityItemRefreshTask(
+        TyrantStateManager stateManager,
+        AbilityReadinessService readiness,
+        AbilityItemService items,
+        Server server,
+        Clock clock
+    ) {
+        this.stateManager = stateManager;
+        this.readiness = readiness;
+        this.items = items;
+        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);
+        }
+    }
+}

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 +1,106 @@
+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.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 Set<UUID> grantedFlight = new HashSet<>();
+
+    public AssassinEffectController(
+        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());
+            if (stateManager.game().lifecycle() != GameLifecycle.RUNNING
+                    || state.tyrantClass() != TyrantClass.ASSASSIN) {
+                clear(player);
+                continue;
+            }
+            applyWhileActive(
+                player, state, Ability.ASSASSIN_INVISIBILITY_ACTIVE,
+                PotionEffectType.INVISIBILITY, 0, false
+            );
+            applyWhileActive(
+                player, state, Ability.ASSASSIN_SPEED_ACTIVE,
+                PotionEffectType.SPEED, 0, true
+            );
+            applyWhileActive(
+                player, state, Ability.ASSASSIN_WEAKNESS_ACTIVE,
+                PotionEffectType.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,
+        PotionEffectType type,
+        int amplifier,
+        boolean particles
+    ) {
+        if (state.cooldownEnds().getOrDefault(ability, Instant.MIN).isAfter(clock.instant())) {
+            player.addPotionEffect(new PotionEffect(
+                type, EFFECT_TICKS, amplifier, false, particles, true
+            ));
+        } else {
+            player.removePotionEffect(type);
+        }
+    }
+
+    private void clear(Player player) {
+        player.removePotionEffect(PotionEffectType.INVISIBILITY);
+        player.removePotionEffect(PotionEffectType.SPEED);
+        player.removePotionEffect(PotionEffectType.WEAKNESS);
+        if (grantedFlight.remove(player.getUniqueId()) && isSurvivalLike(player)) {
+            player.setAllowFlight(false);
+            player.setFlying(false);
+        }
+    }
+
+    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 +1,82 @@
+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.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 +1,152 @@
+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();
+        for (int index = 0; index < contents.length; index++) {
+            ItemStack item = contents[index];
+            if (isBoundAbilityItem(item)
+                    && (owner(item).filter(state.playerId()::equals).isEmpty()
+                        || ability(item).filter(state.readyAbilityItems()::contains).isEmpty())) {
+                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/BukkitOnlinePlayerDirectory.java

@@ -14,4 +14,11 @@ public final class BukkitOnlinePlayerDirectory implements OnlinePlayerDirectory
     public Player findById(UUID playerId) {
         return Bukkit.getPlayer(playerId);
     }
+
+    @Override
+    public java.util.Set<UUID> onlinePlayerIds() {
+        return Bukkit.getOnlinePlayers().stream()
+            .map(Player::getUniqueId)
+            .collect(java.util.stream.Collectors.toUnmodifiableSet());
+    }
 }

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

@@ -78,7 +78,7 @@ public final class ClassAssignmentService {
         if (targetId.equals(assignerId)) {
             return ClassAssignmentStatus.TARGET_IS_TYRANT;
         }
-        if (target.optedOutUntil().filter(until -> until.isAfter(now)).isPresent()) {
+        if (target.optedOutUntil().isPresent()) {
             return ClassAssignmentStatus.TARGET_OPTED_OUT;
         }
         return null;
@@ -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/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/OnlinePlayerDirectory.java

@@ -7,4 +7,6 @@ public interface OnlinePlayerDirectory {
     Player findByName(String name);
 
     Player findById(UUID playerId);
+
+    java.util.Set<UUID> onlinePlayerIds();
 }

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

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

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

@@ -0,0 +1,68 @@
+package games.dmg.spigottyrant;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+
+public final class ParticipationService {
+    private final Duration optOutDuration;
+
+    public ParticipationService(Duration optOutDuration) {
+        if (optOutDuration.isNegative() || optOutDuration.isZero()) {
+            throw new IllegalArgumentException("optOutDuration must be positive");
+        }
+        this.optOutDuration = optOutDuration;
+    }
+
+    public ParticipationResult optOut(GameState game, PlayerState player, Instant now) {
+        if (game.tyrantId().filter(player.playerId()::equals).isPresent()
+                || game.vigilanteId().filter(player.playerId()::equals).isPresent()) {
+            return new ParticipationResult(
+                player, ParticipationStatus.MUST_RELINQUISH_ROLE
+            );
+        }
+        if (player.optedOutUntil().isPresent()) {
+            return new ParticipationResult(player, ParticipationStatus.ALREADY_OPTED_OUT);
+        }
+        PlayerState updated = new PlayerState(
+            player.playerId(),
+            player.latestName(),
+            player.lastLogin(),
+            Optional.of(now.plus(optOutDuration)),
+            TyrantClass.NONE,
+            Optional.empty(),
+            Map.of(),
+            Set.of(),
+            player.capturedMobs()
+        );
+        return new ParticipationResult(updated, ParticipationStatus.OPTED_OUT);
+    }
+
+    public ParticipationResult optIn(PlayerState player, Instant now) {
+        if (player.optedOutUntil().isEmpty()) {
+            return new ParticipationResult(player, ParticipationStatus.ALREADY_OPTED_IN);
+        }
+        if (now.isBefore(player.optedOutUntil().orElseThrow())) {
+            return new ParticipationResult(player, ParticipationStatus.COOLDOWN_ACTIVE);
+        }
+        PlayerState updated = new PlayerState(
+            player.playerId(),
+            player.latestName(),
+            player.lastLogin(),
+            Optional.empty(),
+            player.tyrantClass(),
+            player.followerOf(),
+            player.cooldownEnds(),
+            player.readyAbilityItems(),
+            player.capturedMobs()
+        );
+        return new ParticipationResult(updated, ParticipationStatus.OPTED_IN);
+    }
+
+    public ParticipationStatus status(PlayerState player, Instant now) {
+        return player.optedOutUntil().isPresent()
+            ? ParticipationStatus.OPTED_OUT : ParticipationStatus.OPTED_IN;
+    }
+}

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

@@ -0,0 +1,10 @@
+package games.dmg.spigottyrant;
+
+public enum ParticipationStatus {
+    OPTED_IN,
+    OPTED_OUT,
+    COOLDOWN_ACTIVE,
+    MUST_RELINQUISH_ROLE,
+    ALREADY_OPTED_IN,
+    ALREADY_OPTED_OUT
+}

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

@@ -35,9 +35,10 @@ public final class PlayerJoinListener implements Listener {
                 current.cooldownEnds(), current.readyAbilityItems(), current.capturedMobs()
             )
         );
-        String reminder = ClassAssignmentMessages.loginReminder(player);
-        if (!reminder.isEmpty()) {
-            event.getPlayer().sendMessage(reminder);
+        for (String message : PlayerStatusMessages.forJoin(
+            stateManager.game(), player, clock.instant()
+        )) {
+            event.getPlayer().sendMessage(message);
         }
         if (presentation != null
                 && stateManager.game().lifecycle() == GameLifecycle.RUNNING

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

@@ -0,0 +1,53 @@
+package games.dmg.spigottyrant;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.List;
+
+public final class PlayerStatusMessages {
+    private PlayerStatusMessages() {
+    }
+
+    public static List<String> forJoin(
+        GameState game,
+        PlayerState player,
+        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 "
+                + game.unspentChoices() + ", abilities " + game.purchases() + ".");
+            hasRole = true;
+        }
+        if (game.vigilanteId().filter(player.playerId()::equals).isPresent()) {
+            messages.add("Role: VIGILANTE.");
+            hasRole = true;
+        } else if (player.followerOf().isPresent()) {
+            messages.add("Role: FOLLOWER of " + player.followerOf().orElseThrow() + ".");
+            hasRole = true;
+        }
+        if (player.tyrantClass() != TyrantClass.NONE) {
+            messages.add(ClassAssignmentMessages.loginReminder(player));
+            hasRole = true;
+        }
+        player.cooldownEnds().entrySet().stream()
+            .sorted(java.util.Map.Entry.comparingByKey())
+            .forEach(entry -> {
+                long seconds = Math.max(
+                    0L, Duration.between(now, entry.getValue()).toSeconds()
+                );
+                messages.add("Cooldown: " + entry.getKey() + " " + seconds + "s remaining.");
+            });
+        if (player.optedOutUntil().isPresent()) {
+            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 "
+                + "if you do not want to participate.");
+        }
+        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,
@@ -65,6 +66,7 @@ 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");
@@ -99,6 +101,7 @@ 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),

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

@@ -0,0 +1,7 @@
+package games.dmg.spigottyrant;
+
+public record RelinquishmentResult(
+    LifecycleState state,
+    RelinquishmentStatus status
+) {
+}

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

@@ -0,0 +1,7 @@
+package games.dmg.spigottyrant;
+
+public enum RelinquishmentStatus {
+    RELINQUISHED,
+    NO_CENTRAL_ROLE,
+    GAME_NOT_RUNNING
+}

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

@@ -30,7 +30,7 @@ public final class RoleCandidateSelector {
                     || player.lastLogin().orElseThrow().isBefore(cutoff)) {
                 continue;
             }
-            if (player.optedOutUntil().filter(deadline -> deadline.isAfter(now)).isPresent()) {
+            if (player.optedOutUntil().isPresent()) {
                 continue;
             }
             eligible.add(player.playerId());

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

@@ -0,0 +1,234 @@
+package games.dmg.spigottyrant;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import java.util.random.RandomGenerator;
+
+public final class RoleMaintenanceService {
+    private final RoleCandidateSelector candidates;
+    private final TyrantSuccessionService succession;
+    private final Duration inactivity;
+    private final Duration activityWindow;
+    private final Duration pendingTimeout;
+    private final RandomGenerator random;
+
+    public RoleMaintenanceService(
+        RoleCandidateSelector candidates,
+        TyrantSuccessionService succession,
+        Duration inactivity,
+        Duration activityWindow,
+        Duration pendingTimeout,
+        RandomGenerator random
+    ) {
+        this.candidates = candidates;
+        this.succession = succession;
+        this.inactivity = inactivity;
+        this.activityWindow = activityWindow;
+        this.pendingTimeout = pendingTimeout;
+        this.random = random;
+    }
+
+    public LifecycleState maintain(
+        PersistentState state,
+        Set<UUID> onlinePlayerIds,
+        Instant now
+    ) {
+        if (state.game().lifecycle() != GameLifecycle.RUNNING) {
+            return new LifecycleState(state.game(), state.players());
+        }
+        LifecycleState current = confirmPending(state, onlinePlayerIds, now);
+        if (isInactive(current.game().tyrantId(), current.players(), now)) {
+            return succession.succeed(
+                current.asPersistentState(), Optional.empty(), onlinePlayerIds, now
+            );
+        }
+        if (isInactive(current.game().vigilanteId(), current.players(), now)) {
+            current = rerollVigilante(
+                current.asPersistentState(), current.game().vigilanteId(), onlinePlayerIds, now
+            );
+        }
+        current = rerollExpiredTyrant(current, onlinePlayerIds, now);
+        current = rerollExpiredVigilante(current, onlinePlayerIds, now);
+        if (current.game().tyrantId().isEmpty() && current.game().pendingTyrant().isEmpty()) {
+            current = selectTyrant(current, Optional.empty(), onlinePlayerIds, now);
+        }
+        if (current.game().tyrantId().isPresent()
+                && current.game().vigilanteId().isEmpty()
+                && current.game().pendingVigilante().isEmpty()) {
+            current = rerollVigilante(
+                current.asPersistentState(), Optional.empty(), onlinePlayerIds, now
+            );
+        }
+        return current;
+    }
+
+    public LifecycleState rerollVigilante(
+        PersistentState state,
+        Optional<UUID> previousVigilante,
+        Set<UUID> onlinePlayerIds,
+        Instant now
+    ) {
+        Map<UUID, PlayerState> players = clearFollowers(state.players(), previousVigilante);
+        Set<UUID> excluded = state.game().tyrantId().map(Set::of).orElseGet(Set::of);
+        Optional<UUID> selected = candidates.select(
+            players, excluded, previousVigilante, now, activityWindow, random
+        );
+        Optional<UUID> active = selected.filter(onlinePlayerIds::contains);
+        Optional<PendingSelection> pending = selected
+            .filter(playerId -> active.isEmpty())
+            .map(playerId -> new PendingSelection(playerId, now.plus(pendingTimeout)));
+        GameState game = copyRoles(
+            state.game(), state.game().tyrantId(), active,
+            state.game().pendingTyrant(), pending
+        );
+        return new LifecycleState(game, players);
+    }
+
+    private LifecycleState confirmPending(
+        PersistentState state,
+        Set<UUID> onlinePlayerIds,
+        Instant now
+    ) {
+        GameState game = state.game();
+        Optional<UUID> tyrant = game.tyrantId();
+        Optional<UUID> vigilante = game.vigilanteId();
+        Optional<PendingSelection> pendingTyrant = game.pendingTyrant();
+        Optional<PendingSelection> pendingVigilante = game.pendingVigilante();
+        if (pendingTyrant.isPresent()) {
+            PendingSelection pending = pendingTyrant.orElseThrow();
+            if (!now.isAfter(pending.expiresAt())
+                    && onlinePlayerIds.contains(pending.candidateId())
+                    && eligibleAtConfirmation(state.players().get(pending.candidateId()), now)
+                    && vigilante.filter(pending.candidateId()::equals).isEmpty()) {
+                tyrant = Optional.of(pending.candidateId());
+                pendingTyrant = Optional.empty();
+            }
+        }
+        if (pendingVigilante.isPresent()) {
+            PendingSelection pending = pendingVigilante.orElseThrow();
+            if (!now.isAfter(pending.expiresAt())
+                    && onlinePlayerIds.contains(pending.candidateId())
+                    && eligibleAtConfirmation(state.players().get(pending.candidateId()), now)
+                    && tyrant.filter(pending.candidateId()::equals).isEmpty()) {
+                vigilante = Optional.of(pending.candidateId());
+                pendingVigilante = Optional.empty();
+            }
+        }
+        return new LifecycleState(
+            copyRoles(game, tyrant, vigilante, pendingTyrant, pendingVigilante),
+            state.players()
+        );
+    }
+
+    private LifecycleState rerollExpiredTyrant(
+        LifecycleState state,
+        Set<UUID> onlinePlayerIds,
+        Instant now
+    ) {
+        Optional<PendingSelection> pending = state.game().pendingTyrant();
+        if (pending.isEmpty() || !now.isAfter(pending.orElseThrow().expiresAt())) {
+            return state;
+        }
+        return selectTyrant(
+            state,
+            Optional.of(pending.orElseThrow().candidateId()),
+            onlinePlayerIds,
+            now
+        );
+    }
+
+    private LifecycleState selectTyrant(
+        LifecycleState state,
+        Optional<UUID> previous,
+        Set<UUID> onlinePlayerIds,
+        Instant now
+    ) {
+        Set<UUID> excluded = state.game().vigilanteId().map(Set::of).orElseGet(Set::of);
+        Optional<UUID> selected = candidates.select(
+            state.players(), excluded, previous, now, activityWindow, random
+        );
+        Optional<UUID> active = selected.filter(onlinePlayerIds::contains);
+        Optional<PendingSelection> pending = selected
+            .filter(playerId -> active.isEmpty())
+            .map(playerId -> new PendingSelection(playerId, now.plus(pendingTimeout)));
+        GameState game = copyRoles(
+            state.game(), active, state.game().vigilanteId(), pending,
+            state.game().pendingVigilante()
+        );
+        return new LifecycleState(game, state.players());
+    }
+
+    private LifecycleState rerollExpiredVigilante(
+        LifecycleState state,
+        Set<UUID> onlinePlayerIds,
+        Instant now
+    ) {
+        Optional<PendingSelection> pending = state.game().pendingVigilante();
+        if (pending.isEmpty() || !now.isAfter(pending.orElseThrow().expiresAt())) {
+            return state;
+        }
+        return rerollVigilante(
+            state.asPersistentState(),
+            Optional.of(pending.orElseThrow().candidateId()),
+            onlinePlayerIds,
+            now
+        );
+    }
+
+    private boolean isInactive(
+        Optional<UUID> roleHolder,
+        Map<UUID, PlayerState> players,
+        Instant now
+    ) {
+        if (roleHolder.isEmpty()) {
+            return false;
+        }
+        PlayerState player = players.get(roleHolder.orElseThrow());
+        return player != null
+            && player.lastLogin().isPresent()
+            && !player.lastLogin().orElseThrow().plus(inactivity).isAfter(now);
+    }
+
+    private static boolean eligibleAtConfirmation(PlayerState player, Instant now) {
+        return player != null && player.optedOutUntil().isEmpty();
+    }
+
+    private static Map<UUID, PlayerState> clearFollowers(
+        Map<UUID, PlayerState> players,
+        Optional<UUID> previousVigilante
+    ) {
+        if (previousVigilante.isEmpty()) {
+            return players;
+        }
+        Map<UUID, PlayerState> updated = new HashMap<>();
+        UUID previous = previousVigilante.orElseThrow();
+        for (PlayerState player : players.values()) {
+            Optional<UUID> followerOf = player.followerOf().filter(id -> !id.equals(previous));
+            updated.put(player.playerId(), new PlayerState(
+                player.playerId(), player.latestName(), player.lastLogin(), player.optedOutUntil(),
+                player.tyrantClass(), followerOf, player.cooldownEnds(),
+                player.readyAbilityItems(), player.capturedMobs()
+            ));
+        }
+        return Map.copyOf(updated);
+    }
+
+    private static GameState copyRoles(
+        GameState game,
+        Optional<UUID> tyrant,
+        Optional<UUID> vigilante,
+        Optional<PendingSelection> pendingTyrant,
+        Optional<PendingSelection> pendingVigilante
+    ) {
+        return new GameState(
+            game.lifecycle(), tyrant, vigilante, pendingTyrant, pendingVigilante,
+            game.pausedAt(), game.accumulatedPausedTime(), game.tyrantLevel(),
+            game.unspentChoices(), game.purchases()
+        );
+    }
+}

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

@@ -0,0 +1,44 @@
+package games.dmg.spigottyrant;
+
+import java.time.Clock;
+import java.util.Set;
+import java.util.UUID;
+import java.util.stream.Collectors;
+import org.bukkit.Server;
+import org.bukkit.entity.Player;
+
+public final class RoleMaintenanceTask implements Runnable {
+    private final TyrantStateManager stateManager;
+    private final RoleMaintenanceService maintenance;
+    private final TyrantPresentation presentation;
+    private final Server server;
+    private final Clock clock;
+
+    public RoleMaintenanceTask(
+        TyrantStateManager stateManager,
+        RoleMaintenanceService maintenance,
+        TyrantPresentation presentation,
+        Server server,
+        Clock clock
+    ) {
+        this.stateManager = stateManager;
+        this.maintenance = maintenance;
+        this.presentation = presentation;
+        this.server = server;
+        this.clock = clock;
+    }
+
+    @Override
+    public void run() {
+        PersistentState before = stateManager.snapshot();
+        Set<UUID> online = server.getOnlinePlayers().stream()
+            .map(Player::getUniqueId)
+            .collect(Collectors.toUnmodifiableSet());
+        LifecycleState after = maintenance.maintain(before, online, clock.instant());
+        if (!after.asPersistentState().equals(before)) {
+            stateManager.replaceState(after);
+            stateManager.saveIfDirty();
+            presentation.reconcile(after.game().tyrantId());
+        }
+    }
+}

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

@@ -0,0 +1,51 @@
+package games.dmg.spigottyrant;
+
+import java.time.Instant;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+
+public final class RoleRelinquishmentService {
+    private final TyrantSuccessionService succession;
+    private final RoleMaintenanceService maintenance;
+
+    public RoleRelinquishmentService(
+        TyrantSuccessionService succession,
+        RoleMaintenanceService maintenance
+    ) {
+        this.succession = succession;
+        this.maintenance = maintenance;
+    }
+
+    public RelinquishmentResult relinquish(
+        PersistentState state,
+        UUID playerId,
+        Set<UUID> onlinePlayerIds,
+        Instant now
+    ) {
+        if (state.game().lifecycle() != GameLifecycle.RUNNING) {
+            return new RelinquishmentResult(
+                new LifecycleState(state.game(), state.players()),
+                RelinquishmentStatus.GAME_NOT_RUNNING
+            );
+        }
+        if (state.game().tyrantId().filter(playerId::equals).isPresent()) {
+            return new RelinquishmentResult(
+                succession.succeed(state, Optional.empty(), onlinePlayerIds, now),
+                RelinquishmentStatus.RELINQUISHED
+            );
+        }
+        if (state.game().vigilanteId().filter(playerId::equals).isPresent()) {
+            return new RelinquishmentResult(
+                maintenance.rerollVigilante(
+                    state, Optional.of(playerId), onlinePlayerIds, now
+                ),
+                RelinquishmentStatus.RELINQUISHED
+            );
+        }
+        return new RelinquishmentResult(
+            new LifecycleState(state.game(), state.players()),
+            RelinquishmentStatus.NO_CENTRAL_ROLE
+        );
+    }
+}

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

@@ -11,6 +11,8 @@ public final class SpigotTyrantPlugin extends JavaPlugin {
     private PluginSettings settings;
     private TyrantStateManager stateManager;
     private TyrantPresentation tyrantPresentation;
+    private VigilanteEffectController vigilanteEffects;
+    private AssassinEffectController assassinEffects;
 
     @Override
     public void onEnable() {
@@ -28,50 +30,138 @@ public final class SpigotTyrantPlugin extends JavaPlugin {
             return;
         }
 
+        Clock clock = Clock.systemUTC();
+        RoleCandidateSelector candidateSelector = new RoleCandidateSelector();
+        java.util.random.RandomGenerator random = java.util.random.RandomGenerator.getDefault();
+        TyrantSuccessionService succession = new TyrantSuccessionService(
+            candidateSelector,
+            settings.candidateActivityWindow(),
+            settings.pendingSelectionTimeout(),
+            random
+        );
+        RoleMaintenanceService maintenance = new RoleMaintenanceService(
+            candidateSelector,
+            succession,
+            settings.roleInactivity(),
+            settings.candidateActivityWindow(),
+            settings.pendingSelectionTimeout(),
+            random
+        );
+        BukkitOnlinePlayerDirectory onlinePlayers = new BukkitOnlinePlayerDirectory();
+        FollowerService followers = new FollowerService();
+        AbilityReadinessService readiness = new AbilityReadinessService();
+        AbilityItemService abilityItems = new BukkitAbilityItemService(this, settings);
+        AssassinAbilityService assassinAbilities = new AssassinAbilityService(
+            readiness, settings
+        );
+        assassinEffects = new AssassinEffectController(
+            stateManager, getServer(), settings, clock
+        );
+        VigilanteCombatTracker combatTracker = new VigilanteCombatTracker();
+        vigilanteEffects = new VigilanteEffectController(
+            stateManager, getServer(), combatTracker, settings, clock
+        );
         tyrantPresentation = new BukkitTyrantPresentation(getServer());
         ManagedRoleEffects managedEffects = new BukkitManagedRoleEffects(
             stateManager, tyrantPresentation
         );
         managedEffects.restoreAll();
         Objects.requireNonNull(getCommand("tyrant"), "Missing tyrant command metadata")
-            .setExecutor(new TyrantCommand(stateManager, new TyrantProgressionService()));
+            .setExecutor(new TyrantCommand(
+                stateManager,
+                new TyrantProgressionService(),
+                new ClassAssignmentService(),
+                onlinePlayers,
+                clock,
+                new ParticipationService(settings.optOutDuration()),
+                new RoleRelinquishmentService(succession, maintenance),
+                tyrantPresentation,
+                abilityItems
+            ));
+        Objects.requireNonNull(getCommand("vigilante"), "Missing vigilante metadata")
+            .setExecutor(new VigilanteCommand(stateManager, followers, onlinePlayers));
         Objects.requireNonNull(getCommand("tyrantadmin"), "Missing tyrantadmin metadata")
             .setExecutor(new TyrantAdminCommand(
                 stateManager,
                 new GameLifecycleService(),
-                new BukkitOnlinePlayerDirectory(),
+                onlinePlayers,
                 managedEffects,
-                Clock.systemUTC(),
-                new RoleCandidateSelector(),
+                clock,
+                candidateSelector,
                 settings.candidateActivityWindow(),
                 settings.pendingSelectionTimeout(),
-                java.util.random.RandomGenerator.getDefault()
+                random
             ));
         getServer().getPluginManager().registerEvents(
-            new PlayerJoinListener(stateManager, Clock.systemUTC(), tyrantPresentation),
+            new PlayerJoinListener(stateManager, clock, tyrantPresentation),
             this
         );
         getServer().getPluginManager().registerEvents(
             new TyrantDeathListener(
-                stateManager,
-                new TyrantSuccessionService(
-                    new RoleCandidateSelector(),
-                    settings.candidateActivityWindow(),
-                    settings.pendingSelectionTimeout(),
-                    java.util.random.RandomGenerator.getDefault()
-                ),
-                tyrantPresentation,
-                getServer(),
-                Clock.systemUTC()
+                stateManager, succession, tyrantPresentation, getServer(), clock
             ),
             this
         );
+        getServer().getPluginManager().registerEvents(
+            new VigilanteDeathListener(
+                stateManager, new TyrantProgressionService(), maintenance,
+                getServer(), clock
+            ),
+            this
+        );
+        getServer().getPluginManager().registerEvents(
+            new VigilanteCombatListener(
+                stateManager, combatTracker, clock, settings.vigilanteCombatDuration()
+            ),
+            this
+        );
+        getServer().getPluginManager().registerEvents(
+            new BoundItemListener(abilityItems),
+            this
+        );
+        getServer().getPluginManager().registerEvents(
+            new AssassinItemListener(
+                stateManager, abilityItems, assassinAbilities, settings, clock
+            ),
+            this
+        );
+        getServer().getPluginManager().registerEvents(
+            new AssassinJumpListener(stateManager, assassinAbilities, clock),
+            this
+        );
+        long maintenanceTicks = Math.max(
+            1L, Math.multiplyExact(settings.selectionRetryInterval().toSeconds(), 20L)
+        );
+        getServer().getScheduler().runTaskTimer(
+            this,
+            new RoleMaintenanceTask(
+                stateManager, maintenance, tyrantPresentation, getServer(), clock
+            ),
+            maintenanceTicks,
+            maintenanceTicks
+        );
+        getServer().getScheduler().runTaskTimer(this, vigilanteEffects, 10L, 10L);
+        getServer().getScheduler().runTaskTimer(this, assassinEffects, 10L, 10L);
+        getServer().getScheduler().runTaskTimer(
+            this,
+            new AbilityItemRefreshTask(
+                stateManager, readiness, abilityItems, getServer(), clock
+            ),
+            20L,
+            20L
+        );
         getServer().getScheduler().runTaskTimer(this, stateManager::saveIfDirty, 600L, 600L);
         getLogger().info("Spigot Tyrant enabled.");
     }
 
     @Override
     public void onDisable() {
+        if (assassinEffects != null) {
+            assassinEffects.clearAll();
+        }
+        if (vigilanteEffects != null) {
+            vigilanteEffects.clear();
+        }
         if (tyrantPresentation != null) {
             tyrantPresentation.clear();
         }

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

@@ -187,9 +187,7 @@ public final class TyrantAdminCommand implements CommandExecutor {
         sender.sendMessage("Pending Tyrant: " + game.pendingTyrant());
         sender.sendMessage("Pending Vigilante: " + game.pendingVigilante());
         for (PlayerState player : stateManager.players().values()) {
-            boolean optedOut = player.optedOutUntil()
-                .filter(deadline -> deadline.isAfter(clock.instant()))
-                .isPresent();
+            boolean optedOut = player.optedOutUntil().isPresent();
             sender.sendMessage(
                 player.latestName() + " (" + player.playerId() + "): class="
                     + player.tyrantClass() + ", followerOf="

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

@@ -1,6 +1,7 @@
 package games.dmg.spigottyrant;
 
 import java.time.Clock;
+import java.time.Duration;
 import java.util.Locale;
 import org.bukkit.ChatColor;
 import org.bukkit.command.Command;
@@ -14,6 +15,10 @@ public final class TyrantCommand implements CommandExecutor {
     private final ClassAssignmentService assignments;
     private final OnlinePlayerDirectory onlinePlayers;
     private final Clock clock;
+    private final ParticipationService participation;
+    private final RoleRelinquishmentService relinquishment;
+    private final TyrantPresentation presentation;
+    private final AbilityItemService abilityItems;
 
     public TyrantCommand(
         TyrantStateManager stateManager,
@@ -34,12 +39,33 @@ public final class TyrantCommand implements CommandExecutor {
         ClassAssignmentService assignments,
         OnlinePlayerDirectory onlinePlayers,
         Clock clock
+    ) {
+        this(
+            stateManager, progression, assignments, onlinePlayers, clock,
+            new ParticipationService(Duration.ofDays(7)), null, null, null
+        );
+    }
+
+    public TyrantCommand(
+        TyrantStateManager stateManager,
+        TyrantProgressionService progression,
+        ClassAssignmentService assignments,
+        OnlinePlayerDirectory onlinePlayers,
+        Clock clock,
+        ParticipationService participation,
+        RoleRelinquishmentService relinquishment,
+        TyrantPresentation presentation,
+        AbilityItemService abilityItems
     ) {
         this.stateManager = stateManager;
         this.progression = progression;
         this.assignments = assignments;
         this.onlinePlayers = onlinePlayers;
         this.clock = clock;
+        this.participation = participation;
+        this.relinquishment = relinquishment;
+        this.presentation = presentation;
+        this.abilityItems = abilityItems;
     }
 
     @Override
@@ -65,10 +91,30 @@ public final class TyrantCommand implements CommandExecutor {
             assign(player, arguments[1], arguments[2]);
             return true;
         }
+        if (arguments.length == 1 && arguments[0].equalsIgnoreCase("status")) {
+            showPlayerStatus(player);
+            return true;
+        }
+        if (arguments.length == 1 && arguments[0].equalsIgnoreCase("optout")) {
+            changeParticipation(player, false);
+            return true;
+        }
+        if (arguments.length == 1 && arguments[0].equalsIgnoreCase("optin")) {
+            changeParticipation(player, true);
+            return true;
+        }
+        if (arguments.length >= 1 && arguments[0].equalsIgnoreCase("relinquish")) {
+            relinquish(player, arguments);
+            return true;
+        }
+        if (arguments.length == 1 && arguments[0].equalsIgnoreCase("item")) {
+            recoverItems(player);
+            return true;
+        }
         player.sendMessage(
             ChatColor.YELLOW
-                + "Usage: /tyrant choices | /tyrant buy <unlock> | "
-                + "/tyrant assign <class> <player>"
+                + "Usage: /tyrant <status|choices|buy|assign|item|optout|optin|"
+                + "relinquish confirm>"
         );
         return true;
     }
@@ -146,16 +192,91 @@ 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() + "."
         );
     }
 
+    private void showPlayerStatus(Player player) {
+        PlayerState state = stateManager.player(player.getUniqueId(), player.getName());
+        PlayerStatusMessages.forJoin(stateManager.game(), state, clock.instant())
+            .forEach(player::sendMessage);
+    }
+
+    private void changeParticipation(Player player, boolean optIn) {
+        ParticipationResult[] result = new ParticipationResult[1];
+        stateManager.updatePlayer(player.getUniqueId(), player.getName(), current -> {
+            result[0] = optIn
+                ? participation.optIn(current, clock.instant())
+                : participation.optOut(stateManager.game(), current, clock.instant());
+            return result[0].player();
+        });
+        if (result[0].status() == ParticipationStatus.OPTED_IN
+                || result[0].status() == ParticipationStatus.OPTED_OUT) {
+            stateManager.saveIfDirty();
+        }
+        if (result[0].status() == ParticipationStatus.MUST_RELINQUISH_ROLE) {
+            player.sendMessage(ChatColor.RED
+                + "Use /tyrant relinquish confirm before opting out.");
+            return;
+        }
+        if (result[0].status() == ParticipationStatus.COOLDOWN_ACTIVE) {
+            player.sendMessage(ChatColor.RED + "You may opt in at "
+                + result[0].player().optedOutUntil().orElseThrow() + ".");
+            return;
+        }
+        player.sendMessage(ChatColor.YELLOW + "Participation: "
+            + readable(result[0].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
+                + "Relinquishing rerolls your role. Use /tyrant relinquish confirm.");
+            return;
+        }
+        if (relinquishment == null) {
+            player.sendMessage(ChatColor.RED + "Role relinquishment is unavailable.");
+            return;
+        }
+        RelinquishmentResult result = relinquishment.relinquish(
+            stateManager.snapshot(), player.getUniqueId(), onlinePlayers.onlinePlayerIds(),
+            clock.instant()
+        );
+        if (result.status() == RelinquishmentStatus.RELINQUISHED) {
+            stateManager.replaceState(result.state());
+            stateManager.saveIfDirty();
+            if (presentation != null) {
+                presentation.reconcile(result.state().game().tyrantId());
+            }
+        }
+        player.sendMessage(ChatColor.YELLOW + "Relinquishment: "
+            + readable(result.status()) + ".");
+    }
+
     private static String readable(Enum<?> status) {
         return status.name().toLowerCase(Locale.ROOT).replace('_', ' ');
     }

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

@@ -40,6 +40,7 @@ denied-mob-types:
   - 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 [choices|buy <unlock>|assign <class> <player>]
+    usage: /tyrant <status|choices|buy|assign|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/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/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/ParticipationServiceTest.java

@@ -0,0 +1,76 @@
+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 ParticipationServiceTest {
+    private static final UUID PLAYER = UUID.fromString("11111111-1111-1111-1111-111111111111");
+    private static final UUID TYRANT = UUID.fromString("22222222-2222-2222-2222-222222222222");
+    private static final Instant NOW = Instant.parse("2026-08-14T12:00:00Z");
+    private final ParticipationService service = new ParticipationService(Duration.ofDays(7));
+
+    @Test
+    void optingOutClearsOrdinaryClassAndFollowerButKeepsPlayerOutAfterCooldown() {
+        PlayerState assigned = new PlayerState(
+            PLAYER, "Player", Optional.of(NOW), Optional.empty(), TyrantClass.ASSASSIN,
+            Optional.of(UUID.randomUUID()),
+            Map.of(Ability.ASSASSIN_INVISIBILITY, NOW.plusSeconds(30)),
+            Set.of(Ability.ASSASSIN_INVISIBILITY), java.util.List.of()
+        );
+        GameState game = runningGame();
+
+        ParticipationResult result = service.optOut(game, assigned, NOW);
+
+        assertEquals(ParticipationStatus.OPTED_OUT, result.status());
+        assertEquals(Optional.of(NOW.plus(Duration.ofDays(7))),
+            result.player().optedOutUntil());
+        assertEquals(TyrantClass.NONE, result.player().tyrantClass());
+        assertEquals(Optional.empty(), result.player().followerOf());
+        assertEquals(Map.of(), result.player().cooldownEnds());
+        assertEquals(ParticipationStatus.OPTED_OUT,
+            service.status(result.player(), NOW.plus(Duration.ofDays(8))));
+    }
+
+    @Test
+    void optingBackInIsBlockedUntilSevenDaysAndThenClearsOptOut() {
+        PlayerState player = service.optOut(
+            runningGame(), PlayerState.newPlayer(PLAYER, "Player"), NOW
+        ).player();
+
+        ParticipationResult early = service.optIn(player, NOW.plus(Duration.ofDays(6)));
+        ParticipationResult ready = service.optIn(player, NOW.plus(Duration.ofDays(7)));
+
+        assertEquals(ParticipationStatus.COOLDOWN_ACTIVE, early.status());
+        assertEquals(ParticipationStatus.OPTED_IN, ready.status());
+        assertEquals(Optional.empty(), ready.player().optedOutUntil());
+    }
+
+    @Test
+    void currentCentralRoleMustRelinquishBeforeOptingOut() {
+        GameState game = new GameState(
+            GameLifecycle.RUNNING, Optional.of(PLAYER), Optional.empty(), Optional.empty(),
+            Optional.empty(), Optional.empty(), Duration.ZERO, 0, 1, Set.of()
+        );
+
+        ParticipationResult result = service.optOut(
+            game, PlayerState.newPlayer(PLAYER, "Tyrant"), NOW
+        );
+
+        assertEquals(ParticipationStatus.MUST_RELINQUISH_ROLE, result.status());
+        assertEquals(Optional.empty(), result.player().optedOutUntil());
+    }
+
+    private static GameState runningGame() {
+        return new GameState(
+            GameLifecycle.RUNNING, Optional.of(TYRANT), Optional.empty(), Optional.empty(),
+            Optional.empty(), Optional.empty(), Duration.ZERO, 0, 1, Set.of()
+        );
+    }
+}

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

@@ -0,0 +1,47 @@
+package games.dmg.spigottyrant;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.time.Duration;
+import java.time.Instant;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+import java.util.UUID;
+import org.junit.jupiter.api.Test;
+
+final class PlayerStatusMessagesTest {
+    private static final UUID PLAYER = UUID.fromString("11111111-1111-1111-1111-111111111111");
+    private static final Instant NOW = Instant.parse("2026-08-14T12:00:00Z");
+
+    @Test
+    void assignedPlayerSeesGameRoleClassAbilitiesAndCooldowns() {
+        GameState game = new GameState(
+            GameLifecycle.RUNNING, Optional.empty(), Optional.of(PLAYER), Optional.empty(),
+            Optional.empty(), Optional.empty(), Duration.ZERO, 0, 0, Set.of()
+        );
+        PlayerState player = new PlayerState(
+            PLAYER, "Player", Optional.of(NOW), Optional.empty(), TyrantClass.ASSASSIN,
+            Optional.empty(), Map.of(Ability.ASSASSIN_INVISIBILITY, NOW.plusSeconds(60)),
+            Set.of(), List.of()
+        );
+
+        List<String> messages = PlayerStatusMessages.forJoin(game, player, NOW);
+
+        assertTrue(messages.stream().anyMatch(message -> message.contains("Game: RUNNING")));
+        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")
+            && message.contains("60s")));
+    }
+
+    @Test
+    void unassignedPlayerIsToldHowToOptOut() {
+        List<String> messages = PlayerStatusMessages.forJoin(
+            GameState.empty(), PlayerState.newPlayer(PLAYER, "Player"), NOW
+        );
+
+        assertTrue(messages.stream().anyMatch(message -> message.contains("/tyrant optout")));
+    }
+}

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/RoleMaintenanceServiceTest.java

@@ -0,0 +1,155 @@
+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 java.util.random.RandomGenerator;
+import org.junit.jupiter.api.Test;
+
+final class RoleMaintenanceServiceTest {
+    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 CANDIDATE = UUID.fromString("33333333-3333-3333-3333-333333333333");
+    private static final UUID OTHER = UUID.fromString("44444444-4444-4444-4444-444444444444");
+    private static final UUID FOLLOWER = UUID.fromString("55555555-5555-5555-5555-555555555555");
+    private static final Instant NOW = Instant.parse("2026-08-14T12:00:00Z");
+    private final RandomGenerator random = RandomGenerator.of("L64X128MixRandom");
+    private final RoleCandidateSelector selector = new RoleCandidateSelector();
+    private final RoleMaintenanceService service = new RoleMaintenanceService(
+        selector,
+        new TyrantSuccessionService(
+            selector, Duration.ofHours(24), Duration.ofHours(24), random
+        ),
+        Duration.ofHours(48),
+        Duration.ofHours(24),
+        Duration.ofHours(24),
+        random
+    );
+
+    @Test
+    void onlinePendingVigilanteConfirmsWithoutConflictingWithTyrant() {
+        GameState game = game(
+            Optional.of(TYRANT), Optional.empty(), Optional.empty(),
+            Optional.of(new PendingSelection(CANDIDATE, NOW.plusSeconds(60)))
+        );
+        PersistentState state = new PersistentState(game, players(
+            active(TYRANT), active(CANDIDATE)
+        ));
+
+        LifecycleState maintained = service.maintain(state, Set.of(TYRANT, CANDIDATE), NOW);
+
+        assertEquals(Optional.of(CANDIDATE), maintained.game().vigilanteId());
+        assertEquals(Optional.empty(), maintained.game().pendingVigilante());
+    }
+
+    @Test
+    void expiredPendingSelectionRerollsAwayFromPreviousCandidate() {
+        GameState game = game(
+            Optional.of(TYRANT), Optional.empty(), Optional.empty(),
+            Optional.of(new PendingSelection(CANDIDATE, NOW.minusSeconds(1)))
+        );
+        PersistentState state = new PersistentState(game, players(
+            active(TYRANT), active(CANDIDATE), active(OTHER)
+        ));
+
+        LifecycleState maintained = service.maintain(state, Set.of(TYRANT), NOW);
+
+        assertEquals(OTHER,
+            maintained.game().pendingVigilante().orElseThrow().candidateId());
+    }
+
+    @Test
+    void inactiveVigilanteIsRerolledAndFollowersAreCleared() {
+        PlayerState follower = withFollower(
+            withLogin(active(FOLLOWER), NOW.minus(Duration.ofHours(25))),
+            VIGILANTE
+        );
+        PlayerState staleVigilante = withLogin(active(VIGILANTE), NOW.minus(Duration.ofHours(49)));
+        GameState game = game(
+            Optional.of(TYRANT), Optional.of(VIGILANTE), Optional.empty(), Optional.empty()
+        );
+        PersistentState state = new PersistentState(game, Map.of(
+            TYRANT, active(TYRANT), VIGILANTE, staleVigilante,
+            FOLLOWER, follower, OTHER, active(OTHER)
+        ));
+
+        LifecycleState maintained = service.maintain(state, Set.of(TYRANT, OTHER), NOW);
+
+        assertEquals(Optional.of(OTHER), maintained.game().vigilanteId());
+        assertEquals(Optional.empty(), maintained.players().get(FOLLOWER).followerOf());
+        assertEquals(Optional.of(TYRANT), maintained.game().tyrantId());
+    }
+
+    @Test
+    void inactiveTyrantEndsReignAndUsesNormalSuccession() {
+        PlayerState staleTyrant = withLogin(
+            active(TYRANT), NOW.minus(Duration.ofHours(48))
+        );
+        PlayerState successor = new PlayerState(
+            OTHER, "Successor", Optional.of(NOW.minusSeconds(60)), Optional.empty(),
+            TyrantClass.FIXER, Optional.of(VIGILANTE), Map.of(), Set.of(),
+            java.util.List.of()
+        );
+        GameState game = new GameState(
+            GameLifecycle.RUNNING, Optional.of(TYRANT), Optional.of(VIGILANTE),
+            Optional.empty(), Optional.empty(), Optional.empty(), Duration.ZERO,
+            5, 0, Set.of(TyrantUnlock.FIXER)
+        );
+        PersistentState state = new PersistentState(game, Map.of(
+            TYRANT, staleTyrant, VIGILANTE, active(VIGILANTE), OTHER, successor
+        ));
+
+        LifecycleState maintained = service.maintain(state, Set.of(OTHER), NOW);
+
+        assertEquals(0, maintained.game().tyrantLevel());
+        assertEquals(1, maintained.game().unspentChoices());
+        assertEquals(Set.of(), maintained.game().purchases());
+        assertEquals(TyrantClass.NONE, maintained.players().get(OTHER).tyrantClass());
+        assertEquals(Optional.empty(), maintained.players().get(OTHER).followerOf());
+    }
+
+    private static GameState game(
+        Optional<UUID> tyrant,
+        Optional<UUID> vigilante,
+        Optional<PendingSelection> pendingTyrant,
+        Optional<PendingSelection> pendingVigilante
+    ) {
+        return new GameState(
+            GameLifecycle.RUNNING, tyrant, vigilante, pendingTyrant, pendingVigilante,
+            Optional.empty(), Duration.ZERO, 1, 0, Set.of()
+        );
+    }
+
+    private static Map<UUID, PlayerState> players(PlayerState... players) {
+        java.util.HashMap<UUID, PlayerState> map = new java.util.HashMap<>();
+        for (PlayerState player : players) {
+            map.put(player.playerId(), player);
+        }
+        return Map.copyOf(map);
+    }
+
+    private static PlayerState active(UUID id) {
+        return withLogin(PlayerState.newPlayer(id, id.toString()), NOW.minusSeconds(60));
+    }
+
+    private static PlayerState withLogin(PlayerState player, Instant login) {
+        return new PlayerState(
+            player.playerId(), player.latestName(), Optional.of(login), player.optedOutUntil(),
+            player.tyrantClass(), player.followerOf(), player.cooldownEnds(),
+            player.readyAbilityItems(), player.capturedMobs()
+        );
+    }
+
+    private static PlayerState withFollower(PlayerState player, UUID vigilante) {
+        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/RoleRelinquishmentServiceTest.java

@@ -0,0 +1,62 @@
+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 java.util.random.RandomGenerator;
+import org.junit.jupiter.api.Test;
+
+final class RoleRelinquishmentServiceTest {
+    @Test
+    void vigilanteCanRelinquishAndTriggerNormalReroll() {
+        UUID tyrant = UUID.fromString("11111111-1111-1111-1111-111111111111");
+        UUID vigilante = UUID.fromString("22222222-2222-2222-2222-222222222222");
+        UUID candidate = UUID.fromString("33333333-3333-3333-3333-333333333333");
+        Instant now = Instant.parse("2026-08-14T12:00:00Z");
+        RoleCandidateSelector selector = new RoleCandidateSelector();
+        RandomGenerator random = RandomGenerator.of("L64X128MixRandom");
+        TyrantSuccessionService succession = new TyrantSuccessionService(
+            selector, Duration.ofHours(24), Duration.ofHours(24), random
+        );
+        RoleMaintenanceService maintenance = new RoleMaintenanceService(
+            selector, succession, Duration.ofHours(48), Duration.ofHours(24),
+            Duration.ofHours(24), random
+        );
+        RoleRelinquishmentService service = new RoleRelinquishmentService(
+            succession, maintenance
+        );
+        GameState game = new GameState(
+            GameLifecycle.RUNNING, Optional.of(tyrant), Optional.of(vigilante),
+            Optional.empty(), Optional.empty(), Optional.empty(), Duration.ZERO,
+            0, 0, Set.of()
+        );
+        PlayerState tyrantState = active(tyrant, now);
+        PlayerState vigilanteState = active(vigilante, now);
+        PlayerState candidateState = active(candidate, now);
+
+        RelinquishmentResult result = service.relinquish(
+            new PersistentState(game, Map.of(
+                tyrant, tyrantState, vigilante, vigilanteState, candidate, candidateState
+            )),
+            vigilante,
+            Set.of(tyrant, candidate),
+            now
+        );
+
+        assertEquals(RelinquishmentStatus.RELINQUISHED, result.status());
+        assertEquals(Optional.of(candidate), result.state().game().vigilanteId());
+    }
+
+    private static PlayerState active(UUID id, Instant now) {
+        PlayerState player = PlayerState.newPlayer(id, id.toString());
+        return new PlayerState(
+            id, player.latestName(), Optional.of(now.minusSeconds(60)), Optional.empty(),
+            TyrantClass.NONE, Optional.empty(), Map.of(), Set.of(), java.util.List.of()
+        );
+    }
+}

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));
+    }
+}