Kylox's Voltstrider is a mythic Artifact — Vehicle card from Murders at Karlov Manor (MKM), collector number 417. Current market price: $0.26 (foil $0.48), TCGplayer market prices via Scryfall.
Collect evidence 6: This Vehicle becomes an artifact creature until end of turn. Whenever this Vehicle attacks, you may cast an instant or sorcery spell from among cards exiled with it. If that spell would be put into a graveyard, put it on the bottom of its owner's library instead. Crew 2