Vile Transference

You pick one creature that is within 60ft of you and that you can see. You need to make a spell attack, on a hit the creature takes 2d8 necrotic damage. You then heal a number of hit points equal to the amount of damage the creature took. 

At higher levels. When you cast this spell using a spell slot of 3rd or higher, the spells damage is increased by 1d8 for each level higher then 2nd.

You point a finger at a creature and mutter some words. The target is drained of life and the caster is healed of their injuries.