Feat UtilityDeath Knell
Death comes to all, and your god counts on you to hasten the moment.
Minor Action Melee touch
Channel Divinity: You can use only one channel divinity power per encounter
Target: One bloodied creature
Effect: If the target’s current hit points equal 5 + one-half your level or fewer, it drops to 0 hit points. Otherwise, you can use one of your other Channel Divinity powers during this encounter.
Published in Divine Power, page(s) 111.