You can sweep multiple foes to the ground with a single blow of your axe.
Benefit(s): When using a full-attack action with a two-handed weapon, you can give up your regular attacks and instead attempt a trip combat maneuver at your highest base attack bonus against each opponent within reach. You must attempt a separate combat maneuver check against each opponent.
Pathfinder Roleplaying Game Monster Codex © 2014, Paizo Inc.; Authors: Dennis Baker, Jesse Benner, Logan Bonner, Jason Bulmahn, Ross Byers, John Compton, Robert N. Emerson, Jonathan H. Keith, Dale C. McCoy, Jr., Mark Moreland, Tom Phillips, Stephen Radney-MacFarland, Sean K Reynolds, Thomas M. Reid, Patrick Renie, Mark Seifter, Tork Shaw, Neil Spicer, Owen K.C. Stephens, and Russ Taylor.