Break the Breath

 
Prerequisite(s): Improved Unarmed Strike, Improved Trip, Finesse Trip, Base Attack Bonus 4+.
 
Benefit: As a full attack action, in lieu of your regular attacks, you can attempt a trip attack at your highest base attack bonus against every opponent with in 5ft of you. Each successful attack allows you to make an automatic melee attack against that opponent, as with the Improved Trip feat, but a failed trip attempt ends your action.
 
Source: Mongoose Ultimate Feats