Choked Estuary is a rare Land card from Shadows over Innistrad (SOI), collector number 270. Current market price: $0.65 (foil $1.58), 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}.