Smiting Helix

If a card with flashback is put into your graveyard during your turn, you can cast it if it’s legal to do so before any other player can take any actions.

You must still follow any timing restrictions and permissions, including those based on the card’s type. For instance, you can cast a sorcery using flashback only when you could normally cast a sorcery.

Smiting Helix is always a black spell. It’s not red and white if you cast it for its flashback cost.

If the chosen target is an illegal target by the time Smiting Helix tries to resolve, the spell doesn’t resolve. You won’t gain 3 life.