Past in Flames is a special Sorcery card from Time Spiral Remastered (TSR), collector number 350. Current market price: $2.99 (foil $37.33), TCGplayer market prices via Scryfall.
Each instant and sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. Flashback {4}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)