Aura of Transfusion

A mist of looming sanguine flows from within you in an aura of a 15 foot radius. This red mist drains the energies from living and undead beings. Until the spell ends, the aura moves with you, centered on you. Once activated you can use it immediately, then, on subsequent turns you can use additional actions to force a creature within the aura to make a Constitution Saving Throw. On a success, the target takes 3d8 necrotic damage, healing you and allies within the radius for the amount dealt divided between you at your choice, on a fail the creature takes half damage and no healing occurs.

You cannot heal over your HP maximum and you cannot heal damage from constructs.

Using this spell at higher spell slot levels you can target more creatures. At 5th and 6th you can target an additional creature, at 7th and 8th you can target two additional creatures, and at 9th you can target three additional creatures.