---
type: User Story
title: "US-009: Purchase and use Tyrant abilities"
description: Give the Tyrant persistent combat upgrades and limited intelligence about the opposition.
status: done
---

# US-009: Purchase and use Tyrant abilities

As the **Tyrant**, I want permanent upgrades and limited roster intelligence so that I can shape my reign and assess the resistance.

## Acceptance criteria

- [x] Purchasing permanent Strength applies the configured Strength level throughout the current reign while the game is running.
- [x] Purchasing permanent Resistance applies the configured Resistance level throughout the current reign while the game is running.
- [x] Permanent effects are restored after death, milk consumption, ordinary effect removal, login, restart, and replacement by a shorter or weaker effect.
- [x] Roster intelligence can be activated once per rolling 24 unpaused hours after it is purchased.
- [x] Roster intelligence reports the number of active Vigilante-side members without revealing their identities or locations.
- [x] Intelligence counts the current Vigilante and living assigned Followers, whether online or offline, according to configurable counting rules.
- [x] The Tyrant can inspect ability ownership and the remaining intelligence cooldown.
- [x] Purchases and cooldowns survive restart and end with the Tyrant's reign.
- [x] The Tyrant control panel shows purchased passive upgrades and the roster-intelligence readiness or remaining cooldown.
- [x] The Tyrant can activate ready roster intelligence from the control panel and receive the result without revealing identities or locations.

## Related

- [Progress and purchase Tyrant unlocks](us-003-progress-and-purchase-unlocks.md)
- [Configure and persist game state](us-012-configure-and-persist-state.md)
- [Manage a reign through the Tyrant control panel](us-015-manage-tyrant-control-panel.md)