Veir Consuming essence

Use Chaos magic to siphon the living essence from others to Satisfy your hunger. Make a melee spell attack against a creature within your reach. On a hit, the target takes 1d12+5 Chaos damage, and you regain hit points equal to half the amount of Chaos damage dealt. Until the spell ends, you can make the attack again on each of your turns as an action.

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 and Gives disadvantage to target