Sawtusk Demolisher is a rare Creature — Beast card from Commander 2020 (C20), collector number 64. Current market price: $2.99, TCGplayer market prices via Scryfall.
Mutate {3}{G} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.) Trample Whenever this creature mutates, destroy target noncreature permanent. Its controller creates a 3/3 green Beast creature token.