Blood Siphon

When you cast the spell, it will suck the blood and give it to caster. On a hit, the target takes 2d6 necrotic damage, and you regain hit points equal to half the amount of necrotic damage dealt.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.