Quantum Riddler is a mythic Creature — Sphinx card from Edge of Eternities Promos (PEOE), collector number 72p. Current market price: $37.37 (foil $39.47), TCGplayer market prices via Scryfall.
Flying When this creature enters, draw a card. As long as you have one or fewer cards in hand, if you would draw one or more cards, you draw that many cards plus one instead. Warp {1}{U}