Corrupted Crossroads is a rare Land card from Oath of the Gatewatch (OGW), collector number 169. Current market price: $0.17 (foil $0.49), TCGplayer market prices via Scryfall.
{T}: Add {C}. ({C} represents colorless mana.) {T}, Pay 1 life: Add one mana of any color. Spend this mana only to cast a spell with devoid.