Cheapest priced copy (Kamigawa: Neon Dynasty): $0.35 at Card Kingdom, near mint, their price list as of .
Prodigy's Prototype 
Artifact — Vehicle · 3/4 · Uncommon · Kamigawa: Neon Dynasty · #231
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.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Kamigawa: Neon Dynasty | 231 | Uncommon | $0.35 | $0.49 |