Mistveil Plains is a uncommon Land — Plains card from Ultimate Masters (UMA), collector number 247. Current market price: $0.47 (foil $4.60), TCGplayer market prices via Scryfall.
({T}: Add {W}.) This land enters tapped. {W}, {T}: Put target card from your graveyard on the bottom of your library. Activate only if you control two or more white permanents.