Electroduplicate is a rare Sorcery card from Foundations Promos (PFDN), collector number 85s. Current market price: — (foil $1.69), TCGplayer market prices via Scryfall.
Create a token that's a copy of target creature you control, except it has haste and "At the beginning of the end step, sacrifice this token." Flashback {2}{R}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)