Personify is a uncommon Instant card from Lorwyn Eclipsed (ECL), collector number 402. Current market price: $0.24 (foil $0.40), TCGplayer market prices via Scryfall.
Exile target creature you control, then return that card to the battlefield under its owner's control. Create a 1/1 colorless Shapeshifter creature token with changeling. (It's every creature type.)