When you trip one opponent, its fall might take the legs out from under another creature.
Benefit(s): As a standard action, you can attempt a single trip combat maneuver check at your full base attack bonus against a foe within reach. If you succeed, the target is knocked prone as normal and you can attempt an additional trip combat maneuver check (using your full base attack bonus) against a foe that is adjacent to the first target and also within reach. You can attempt only one additional combat maneuver per round with this feat.
Pathfinder Player Companion: Martial Arts Handbook © 2018, Paizo Inc.; Authors: Thurston Hillman, Mikko Kallio, Jacob W. Michaels, Matt Morris, Daniel Reed, Mikhail Rekun, Mark Seifter, and Jeffrey Swank.