Agony Link

When casting chose one creature in range you want to connect with, that creature must make a wisdom save. On a failed save you create a bond between yourself and the target. For the duration whenever you take damage you are able to transfer the damage from an enemy, before resistances, to the target as psychic damage and take no damage yourself. Any conditions that would be applied to you with the damage is applied to the target instead. Once you have used this ability the bond is severed. On successful save the bond isn't created and the spell fails.

When a link is established, a visible dark energy connects the target to the caster. The energy disappears after connection is completed, but returns again as a dark void of visible energy when the damage is dealt.

At 4th level or every additional 2 higher spell slots used lets you increase the number of targets by 1. Any extra targets must be selected while casting and must be within range.