You attack your enemy with such crashing force that the foes around it feel the effect of the blow.

Encounter   ✦     Primal, Thunder, Weapon
Standard Action      Melee weapon

Target: One creature

Attack: Strength vs. AC

Hit: 2[W] + Strength modifier damage, and each enemy adjacent to the target takes 5 thunder damage.

Published in Heroes of the Feywild, page(s) 47.