Shadowed Caravel is a rare Artifact — Vehicle card from Ixalan Promos (PXLN), collector number 246s. Current market price: — (foil $1.00), TCGplayer market prices via Scryfall.
Whenever a creature you control explores, put a +1/+1 counter on this Vehicle. 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.)