Your foe thinks you missed, but now he’s right where you wanted him.
Benefit: As a standard action make a melee attack with a +2 circumstance bonus against one foe. If your attack hits, you deal no damage and your foe thinks you simply missed. In fact, in order to dodge your attack, your foe has moved himself into a more vulnerable position and all your allies have +2 circumstance bonuses to melee attacks against that foe until the beginning of your next turn.
Normal: You can use aid another in combat to grant a single ally a +2 bonus to a single attack against a foe.
Adventurer’s Handbook: Genius Guide Volume 1