Leech
3rd-level Necromancy (Warlock, Wizard)
Casting Time: 1 action
Range: 30 feet
Components: V, S, M (a living leech that you crush between your fingers)
Duration: instantaneous.
You point at a creature within range and fire a sickly green ray toward it that can siphon its life force to heal your wounds. Make a ranged spell attack against a creature within range. On a hit, the target takes 6d6 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.