Rakdos, the Showstopper is a mythic Legendary Creature — Demon card from Ravnica Allegiance (RNA), collector number 199. Current market price: $2.91 (foil $12.66), TCGplayer market prices via Scryfall.
Flying, trample When Rakdos enters, flip a coin for each creature that isn't a Demon, Devil, or Imp. Destroy each creature whose coin comes up tails.