Twisted Abomination is a common Creature — Zombie Mutant card from Masters 25 (A25), collector number 111. Current market price: $0.23 (foil $0.27), TCGplayer market prices via Scryfall.
{B}: Regenerate this creature. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.) Swampcycling {2} ({2}, Discard this card: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.)