Rakdos, Patron of Chaos is a mythic Legendary Creature — Demon card from Murders at Karlov Manor Promos (PMKM), collector number 224p. Current market price: $4.99 (foil $4.66), TCGplayer market prices via Scryfall.
Flying, trample At the beginning of your end step, target opponent may sacrifice two nonland, nontoken permanents of their choice. If they don't, you draw two cards.