TARDIS Bay is a common Plane — Gallifrey card from Doctor Who (WHO), collector number 601. Current market price: $0.32, TCGplayer market prices via Scryfall.
The first spell you cast during each of your turns with mana value 2 or greater has cascade. (When you cast that spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.) When chaos ensues, gain control of target artifact. Then planeswalk.