Choked Estuary is a rare Land card from Shadows over Innistrad Promos (PSOI), collector number 270s. Current market price: — (foil $9.99), TCGplayer market prices via Scryfall.
As this land enters, you may reveal an Island or Swamp card from your hand. If you don't, this land enters tapped. {T}: Add {U} or {B}.