Fury of the Abyss (Su): As a swift action, you can give yourself an enhancement bonus equal to 1/2 your cleric level (minimum +1) on melee attacks, melee damage rolls, and combat maneuver checks. This bonus lasts for 1 round. During this round, you take a –2 penalty to AC. You can use this ability for a number of times per day equal to 3 + your Wisdom modifier.
Advanced Player’s Guide. Copyright 2010, Paizo Publishing, LLC; Author: Jason Bulmahn.