You slam your weapon into your foe's gut and cause the creature to double over, enabling an ally to smash it.

Encounter   ✦     Martial, Weapon
Standard Action      Melee weapon

Target: One creature

Attack: Strength vs. Fortitude

Hit: You knock the target prone.

Effect: One ally adjacent to the target can make a melee basic attack against it as a free action.

Published in Martial Power 2, page(s) 86.