Gallifrey Council Chamber is a rare Legendary Land card from Doctor Who (WHO), collector number 188. Current market price: $0.31 (foil $0.57), TCGplayer market prices via Scryfall.
When Gallifrey Council Chamber enters, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.) {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a Time Lord or Alien spell or activate an ability of a Time Lord or Alien.