Ultimate sacrifice

You stab yourself and you whisper your name and then you instantaneously kill one monster-any challenge rating and then you die, you cannot be revived after this because your soul is devoured by death and in return he destroys your enemy. You have to do it willingly to yourself. You can make a d100 constitution check to escape the stomach of death you need to roll a 100. If your in the service of some deity they may rescue you if they are a kind deity or value your service. Your deity can only save you once.