Draining Strike

The first time you hit with a melee weapon attack during this spell’s duration, the attack deals an extra 2d8 necrotic damage to the target. You regain hit points equal to half the amount of total damage dealt by this attack.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.