Foundry Helix is a common Instant card from Modern Horizons 2 (MH2), collector number 196. Current market price: $0.15 (foil $0.23), TCGplayer market prices via Scryfall.
As an additional cost to cast this spell, sacrifice a permanent. Foundry Helix deals 4 damage to any target. If the sacrificed permanent was an artifact, you gain 4 life.