Drain Life-Power

Your hands are covered in a inky black substance. Make a ranged spell attack against a creature within your range. On a hit, the target takes 2d8 necrotic damage. You regain hit points equal to the amount of necrotic damage dealt. Until the spell ends, you can make the attack again on each of your turns as an action. If you miss any of the attacks the spell ends and you take 3d6 necrotic damage

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 for each slot level above 2nd.