Chain Harm

  You release a bolt of necrotic energy that leaps to multiple targets withing 30ft of the original target. A creature within range takes 6d6+ your spellcasting ability modifier necrotic damage, then creatures of your choice within 15 feet of the secondary targets take 4d6+ your spellcasting ability modifier necrotic damage. If the caster is within 15 feet of the second target you regain 2d4+ your spellcasting ability modifier hit points.  This spell has no effect on undead (besides hollowed-ones) or constructs.

A target must make a Constitution saving throw. The target takes the full damage if failed, and on a success takes half the damage.

At Higher Levels. When you cast this spell using a spell slot of 7th level or higher, one additional bolt leaps from the first target to another target for each slot level above 6th.