Warlord Attack 3Battering Command
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.