Cost: 325 / 230 (upgrade) HP: 2000 Armor: 5 Building Time: 140 Food: 10 Black Citadel The Halls of the Dead can be upgraded to a Black Citadel, unlocking the highest-level upgrades for your units. The vile Black Citadel is the strongest of the Undead Town Halls and is also capable of attacking land and air units. Damage: 13-15 Type: Piercing Range: 80 Cooldown: 1 Units Produced: Acolyte 75 / 1 Basic worker. Can summon structures, harvest gold, and Restore. Acolytes may be sacrificed at a Sacrificial Pit to create Shades. Attacks land units. Acolyte Backpack 50 / 25 Requires: Tomb of Relics Upgrade Time: 20 sec. Gives specific Undead ground units the ability to carry items. Frost Adds a cold effect to this unit's attacks that slows enemy units' movement speed. Upgrades   Abilities Backpack Frost Back to the Buildings Index