Needs review
Source: Way of the Open Hand

Description: You summon the raw strength of the monk to overpower and topple your foes with a single blow

Prerequisites: STR 13, Improved Unarmed Strike, Void Use

When you make a successful unarmed strike against an opponent, you may spend two Void points to have the attack initiate a bull rush against the target instead of inflicting damage. This must be declared before the strike is made; if the attack fails the Void Points are lost.