Carnifex Demon is a rare Creature — Phyrexian Demon card from Lorwyn Eclipsed Commander (ECC), collector number 72. Current market price: $0.28, TCGplayer market prices via Scryfall.
Flying This creature enters with two -1/-1 counters on it. {B}, Remove a -1/-1 counter from this creature: Put a -1/-1 counter on each other creature.