Essence Transfer

You cause the life force of one creature to transfer to another. Choose a creature within range you are able to see. The target makes a Constitution Saving Throw, the target may choose to fail the saving throw if they are aware the spell is being cast. On a failed save the target takes 1d8 necrotic damage, or half as much on a successful one. You may then choose a second creature within 30-feet of the first, the blood essence of the first target transfers to the second, healing them for a number of hit points equal to the damage dealt. If the first target willing choose to fail the saving throw, the second target heals for twice as many hit points instead.

At Higher Levels. When you cast his spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.