Drain Touch

The touch of your shadow-wreathed hand siphons life force from a creature.

Make a melee spell attack. On hit, they take 3d6 Dark damage and you regain HP equal to the amount damage that the target takes. Then, the target must make a Constitution saving throw. On a failed save their maximum HP is reduced by an amount equal to the damage they took. This reduction does not go away until they complete a long rest.

Constructs and Undead are immune to this spell, and using this on an Undead creature causes you to lose 3d6 HP.

Until the spell ends, you can make the attack again on each of your turns as an action, or use it as a reaction during an Attack of Opportunity.

At Higher Levels: Increase the damage by 1d6 for each spell level increase.