Momentary Blink is a common Instant card from Duel Decks: Blessed vs. Cursed (DDQ), collector number 15. Current market price: $0.14, TCGplayer market prices via Scryfall.
Exile target creature you control, then return it to the battlefield under its owner's control. Flashback {3}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)