Associated Domain: Death.
Killing Blow (Su): At 8th level, weapons you use become infused with the power of death. Whenever you confirm a critical hit with a melee or ranged weapon, your attack deals an additional amount of bleed damage equal to half your cleric level. You can use this ability once per day at 8th level, plus one additional time per day for every four levels beyond 8th.
Advanced Player’s Guide. Copyright 2010, Paizo Publishing, LLC; Author: Jason Bulmahn.