Smiting Helix is a uncommon Sorcery card from The List (PLST), collector number MH1-109. Current market price: $0.09, TCGplayer market prices via Scryfall.
Smiting Helix deals 3 damage to any target and you gain 3 life. Flashback {R}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)