Chainbinder Utility 12Dance of the Flail

You force your enemy to move against its will, allowing a nearby ally to lash out at it.

Daily        Martial, Stance
Minor Action      Personal

Effect: Until the stance ends, whenever you attack with a flail and pull, push, or slide an enemy, one of your allies adjacent to that enemy at any point during the forced movement can make a melee basic attack against it as a free action.

Published in Martial Power 2, page(s) 100.