Empathy

You create a connection between you and one other creature you can see within the radius. The creature must make a wisdom saving through against your spell save DC. On a failed save, this creature's soul becomes bound to yours, whenever you take damage from an attack, spell, or ability from a creature that is hostile to you, the target takes damage equal to half the damage you would take before resistances or vulnerabilities are applied. Half of this damage is of the same type as the damage you take, and the other half is necrotic damage. On a successful save the creature is not affected, but the spell remains active, and as an action on every turn for the duration you can choose a new target for the spell to make the save, or become bound and take the damage. As an action any time in the duration you can change targets of the spell, forcing a new creature to make the save, and ending the effect on the first target.

At Higher Levels:

   For every spell level above 7th you can target one additional creature, EX: for an 8th level spell slot you can target two creature, and at 9th level you can target three.