Cackling Counterpart is a rare Instant card from Innistrad (ISD), collector number 46. Current market price: $0.39 (foil $1.57), TCGplayer market prices via Scryfall.
Create a token that's a copy of target creature you control. Flashback {5}{U}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)