Mistveil Plains is a uncommon Land — Plains card from Secrets of Strixhaven Commander (SOC), collector number 386. Current market price: $0.27, 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.