Flash of Defiance is a common Sorcery card from Torment (TOR), collector number 99. Current market price: $0.25 (foil $1.29), TCGplayer market prices via Scryfall.
Green creatures and white creatures can't block this turn. Flashback—{1}{R}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)