Sacred Fire is a uncommon Instant card from Innistrad: Double Feature (DBL), collector number 239. Current market price: $0.31 (foil $1.57), TCGplayer market prices via Scryfall.
Sacred Fire deals 2 damage to any target and you gain 2 life. Flashback {4}{R}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)