Zoyowa's Justice is a uncommon Instant card from The Lost Caverns of Ixalan (LCI), collector number 173. Current market price: $0.28 (foil $0.45), TCGplayer market prices via Scryfall.
The owner of target artifact or creature with mana value 1 or greater shuffles it into their library. Then that player discovers X, where X is its mana value. (They exile cards from the top of their library until they exile a nonland card with that mana value or less. They cast it without paying its mana cost or put it into their hand. They put the rest on the bottom in a random order.)