Ammit Eternal is a rare Creature — Zombie Crocodile Demon card from Hour of Devastation (HOU), collector number 57. Current market price: $1.32 (foil $2.90), TCGplayer market prices via Scryfall.
Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.) Whenever an opponent casts a spell, put a -1/-1 counter on this creature. Whenever this creature deals combat damage to a player, remove all -1/-1 counters from it.