Quivering Palm

Type of Feat: Class
Prerequisite: Monk level 15.
Specifics: This ability may be used once per day to instantly kill an opponent. If the monk makes a successful attack after activating the ability, the target must make a Fortitude save (DC 10 + half the monk's level + the monk's Wisdom modifier) or die.
Use: Selected. Quivering Palm may only be used on creatures at a lower level than the monk. Creatures of the construct and undead types are immune to this effect, as are any creatures that are immune to critical hits.