Vampiric Essence

shadow wreaths both hands and can siphon life force from others to heal your wounds. For the duration of this spell, melee attacks do an additional 1d6 necrotic damage. In addition, you gain half of the damage dealt as hit points.

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