Time Machine is a rare Artifact card from Unhinged (UNH), collector number 128★. Current market price: — (foil $38.00), TCGplayer market prices via Scryfall.
{T}: Exile this artifact and target nontoken creature you own. Return them to the battlefield at the beginning of your upkeep on your turn X in the next game you play with one of your opponents in this game, where X is the mana value of the exiled creature.