Death Coil

You hurl a coil of necrotic energy at a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 4d6 necrotic damage, and you regain hit points equal to half the amount of necrotic damage dealt. Alternatively, you can choose an undead creature with this spell instead of making an attack roll. The undead creature takes no damage and instead regains hit points equal to twice the amount rolled for the damage.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.