Aura of Vampirism

Necrotic energy radiates from you in an aura with a 30-foot radius. Until the spell ends, the aura moves with you, centered on you. If a creature starts their turn within the aura, they must make a Constitution saving throw against your Spell Save DC. If the creature fails the saving throw, they take 1d6 necrotic damage and you regain hit points equal to the damage dealt. You may designate any number of creatures to be unaffected by your aura.

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.