Magma Pummeler is a uncommon Creature — Elemental card from Innistrad: Double Feature (DBL), collector number 436. Current market price: $0.24 (foil $0.48), TCGplayer market prices via Scryfall.
This creature enters with X +1/+1 counters on it. If damage would be dealt to this creature while it has a +1/+1 counter on it, prevent that damage and remove that many +1/+1 counters from it. When one or more counters are removed from this creature this way, it deals that much damage to any target.