Enveloping Blight

This spell has 2 different flavors, Biting, enthralling. You must choose as you cast the spell. You target a creature that you can see within range. That creature must make a Constitution saving throw (against your spell save dc). On a failure, if you chose Biting the target takes 3D8 Necrotic damage and you heal half the amount (amount increases 1D8 per level above the first) and half as much on a success. If enthrallment was chosen the target is acts like they would under the Dominate Person spell on a failure.