Atraxi Warden is a uncommon Creature — Alien Eye card from Doctor Who (WHO), collector number 12. Current market price: $0.29 (foil $0.37), TCGplayer market prices via Scryfall.
Flying When this creature enters, exile up to one target tapped creature. Suspend 5—{1}{W} (Rather than cast this card from your hand, you may pay {1}{W} and exile it with five time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.)