You deliver a smashing blow to a foe that gets its attention more than harms it, encouraging an ally to hit the enemy where it hurts.

At-Will   ✦     Martial, Weapon
Standard Action      Melee weapon

Target: One creature

Attack: Strength vs. Fortitude

Hit: Strength modifier damage. Choose an ally adjacent to you or to the target. The ally gains a power bonus to the next attack roll and damage roll that he or she makes against the target before the end of his or her next turn. The power bonus equals your Charisma modifier.

Published in Player's Handbook, page(s) 145, Class Compendium.