You draw upon the mystical currents of blood magic to link yourself and a target creature. You touch a willing creature, and a mystical connection forms between you. For the duration, you can use a bonus action on each of your turns to transfer a portion of your own life force to the target. The target regains hit points equal to 2d8 + your spellcasting ability modifier, and you take necrotic damage equal to half the number of hit points restored to the target (rounded down).

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.