When you engage in unarmed combat, you know just where to strike to stagger your foe.
Benefit: When you damage a foe with your unarmed attack, you can also cause it to be staggered for 1 round (until just before your next turn). The target can avoid this with a successful Fortitude saving throw (DC = 10 + 1/2 your character level + your Wisdom modifier). You must declare that you are using this feat before you make your attack roll; thus, a failed attack roll ruins the attempt. You can attempt to use this feat once per day for every 4 character levels you have, but no more than once per round. Constructs, incorporeal creatures, plants, undead, and creatures that are immune to critical hits cannot be affected by this ability.
Pathfinder Roleplaying Game: Advanced Class Guide © 2014, Paizo Inc.; Authors: Dennis Baker, Ross Byers, Jesse Benner, Savannah Broadway, Jason Bulmahn, Jim Groves, Tim Hitchcock, Tracy Hurley, Jonathan H. Keith, Will McCardell, Dale C. McCoy, Jr., Tom Phillips, Stephen Radney-MacFarland, Thomas M. Reid, Sean K Reynolds, Tork Shaw, Owen K.C. Stephens, and Russ Taylor.