Tayam, Luminous Enigma is a mythic Legendary Creature — Nightmare Beast card from Commander 2020 (C20), collector number 16. Current market price: $3.23 (foil $1.80), TCGplayer market prices via Scryfall.
Each other creature you control enters with an additional vigilance counter on it. {3}, Remove three counters from among creatures you control: Mill three cards, then return a permanent card with mana value 3 or less from your graveyard to the battlefield.