Death Coil

You steal the essence of an enemy and then slowly claim it for yourself. A target within 20ft takes 3d6 Necrotic damage. A successful Con save halves damage. At the start of your next turn, if this spell hasn’t ended, you gain temporary hit points equal to the damage you dealt.

AT HIGHER LEVELS: When you cast this spell using a spell slot of 2nd level or higher, increase the damage by a further 1d6 for each level above first