Grim Blackguard Utility 12Altar of Fury
The image of a gore-splattered monolith breaks the ground, red runes crawling across its fury-inducing surface.
Daily Conjuration, Shadow
Minor Action Ranged 5
Effect: You conjure an altar of fury on the ground of an unoccupied square within range. The altar lasts until the end of the encounter, and its square is difficult terrain. While within 5 squares of the altar, you and your allies gain a power bonus to damage rolls equal to the number of enemies within 5 squares of the altar, with a maximum bonus equal to your Charisma modifier.
Published in Heroes of Shadow, page(s) 48.