"This is the most you are likely ever to hear from me, so listen closely. Two vows bind me. First, I do not speak. I am not speaking even now. You hear me, yes, but my words make no sound. They appear only in your mind. For this vow I am granted serenity from my race's madness. Second, I do not swing this weapon in anger. Ever. For this vow I am granted the ability to restore, regrow, and heal beyond the abilities of nearly all other mortals. None under my protection have ever died, nor will they. If you expect me to break these vows, you are sadly mistaken and we are doomed before we start. If you accept them and me, however, you will be near indestructible and we will pull this...Heresiarch limb from limb. Victory is inevitable."
Palim is a cannibal. Watch your limbs, crusaders! (Each one of you will have a special crusader ability, chosen at random.)