Prison

The Prison allows your city's Troops to capture and detain other Stronghold level 10 Heroes. Your Prison also gives you the ability to execute enemy Heroes when your Stronghold is level 15. You may only execute other level 15 Stronghold or higher Heroes. Upgrade your Prison to decrease the amount of time needed to execute an enemy Hero. A higher level Hero requires more time before the captured Hero can be executed. The Prison at level 21 will grant a temporary bonus in Troop Attack Bonuses when you execute a captured Hero.