Festercreep is a common Creature — Elemental card from Morningtide (MOR), collector number 62. Current market price: $0.08 (foil $0.60), TCGplayer market prices via Scryfall.
This creature enters with a +1/+1 counter on it. {1}{B}, Remove a +1/+1 counter from this creature: All other creatures get -1/-1 until end of turn.