Butt of the Flesh

Whenever Butt of the Flesh deals combat damage to a creature, put a blight counter on it. (It has, "At the beginning of your upkeep put a -1/-1 counter on this creature for each blight counter, then lose 1 life.)
"The thing is more terrible than I can describe - an incoherent jumble of organ, sinew and bone." — the Ancestor