Tainted Adversary is a mythic Creature — Zombie card from Innistrad: Midnight Hunt Promos (PMID), collector number 124p. Current market price: $2.32 (foil $4.36), TCGplayer market prices via Scryfall.
Deathtouch When this creature enters, you may pay {2}{B} any number of times. When you pay this cost one or more times, put that many +1/+1 counters on this creature, then create twice that many 2/2 black Zombie creature tokens with decayed. (A creature with decayed can't block. When it attacks, sacrifice it at end of combat.)