Vampiric Smite

The next time you hit a creature with a weapon attack before this spell ends, your attack touches both body and soul and deals an additional 3d8 necrotic damage to the target.

Additionally, half the damage taken by the target of your attack is absorbed as temporary hit points that last until your next short or long rest.

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