Foul Roads is a uncommon Land card from Aetherdrift (DFT), collector number 255. Current market price: $0.17 (foil $0.29), TCGplayer market prices via Scryfall.
This land enters tapped unless you control a Mount or Vehicle. {T}: Add {B}. {1}{B}, {T}, Sacrifice this land: Create a 1/1 colorless Pilot creature token with "This token saddles Mounts and crews Vehicles as though its power were 2 greater." Activate only as a sorcery.