You swing your weapon in a great underhand arc, and the impact lifts your target off its feet and sends it crashing to the ground.

Encounter   ✦     Primal, Weapon
Standard Action      Melee weapon

Target: One creature

Attack: Strength vs. Fortitude

Hit: 2[W] + Strength modifier damage, and you knock the target prone.

Published in Player's Handbook 2, page(s) 53.