Prodigy's Prototype is a uncommon Artifact — Vehicle card from Kamigawa: Neon Dynasty (NEO), collector number 231. Current market price: $0.27 (foil $0.28), TCGplayer market prices via Scryfall.
Whenever one or more Vehicles you control attack, create a 1/1 colorless Pilot creature token with "This token crews Vehicles as though its power were 2 greater." Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)