Thunderous Velocipede is a mythic Artifact — Vehicle card from Aetherdrift Promos (PDFT), collector number 183s. Current market price: — (foil $2.63), TCGplayer market prices via Scryfall.
Trample Each other Vehicle and creature you control enters with an additional +1/+1 counter on it if its mana value is 4 or less. Otherwise, it enters with three additional +1/+1 counters on it. Crew 3