As you attack, your body vibrates with a deep rumble that transitions into a destructive roar from the spirit world and slams into your enemies.

Encounter   ✦     Primal, Thunder, Weapon
Standard Action      Area burst 2 within weapon range

Target: Each enemy in the burst

Attack: Wisdom vs. Fortitude

Hit: 1[W] + Wisdom modifier thunder damage. Until the end of your next turn, the target is deafened and dazed, and each enemy adjacent to it is deafened.

Published in Player's Handbook 3, page(s) 127.