Enervation Strike

You touch the weapon used in the spell's casting and imbue it with necrotic energy, then perform a powerful strike against a creature you reach with the weapon.
Make a melee attack against the target with the weapon used in the spell's casting. On a hit, the target takes the weapon's normal effects + 2d6 necrotic damage, and you regain half the necrotic damage done as hit points.

At Higher Levels. When you cast this spell using a slot of 2nd or higher, the damage increases by 1d6 for each slot above 1st.