Defend the Rider is a uncommon Instant card from Aetherdrift (DFT), collector number 157. Current market price: $0.75 (foil $4.71), TCGplayer market prices via Scryfall.
Choose one — • Target permanent you control gains hexproof and indestructible until end of turn. • Create a 1/1 colorless Pilot creature token with "This token saddles Mounts and crews Vehicles as though its power were 2 greater."