Croaking Counterpart is a rare Sorcery card from Innistrad: Double Feature (DBL), collector number 215. Current market price: $1.44 (foil $22.69), TCGplayer market prices via Scryfall.
Create a token that's a copy of target non-Frog creature, except it's a 1/1 green Frog. Flashback {3}{G}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)