Mutilator

Base attack bonus +4, any evil alignment,

After delivering the killing blow to a creature (that is, reducing it to -10 hit points) with a melee weapon, you can decapitate or otherwise hack apart the corpse as a free action. Doing so does not provoke attacks of opportunity and ensures that the creature cannot be revived using a raise dead spell. You can mutilate only one enemy per round in this fashion.

After delivering the killing blow to a creature (that is, reducing it to -10 hit points) with a melee weapon, you can decapitate or otherwise hack apart the corpse as a free action. Doing so does not provoke attacks of opportunity and ensures that the creature cannot be revived using a raise dead spell. You can mutilate only one enemy per round in this fashion.

After striking down your enemy in battle, you can skillfully mutilate the corpse to prevent others from raising it from the dead.