Theft of Breath

Make a ranged spell attack against a creature within range. On a hit, the target takes 2d6 necrotic damage, and the creature must make a Constitution save. On a failed save, you regain hitpoints equal to half the damage dealt.

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.