Darloth/ThingsSamSaid
From Exalted - Unofficial Wiki
Some sort of upgrade to the abyssal armour forming charms that let you activate them using someone else's blood or bonestructure, probably a mortal extra you've just killed.
Some effect (abyssal hearthstone, maybe) that lets you clot blood into razor sharp formations instantly, can be used to flick blood from a lethal wound at people, or just form claws or whatever. Also stops bleeding.
