Exchange Life Forces

Choosing two creatures within range, you attempt to transfer the life force of one creature to the other.  The creature that is having its life force taken must make a Constitution saving throw; if the creature is giving up its life force willingly, it automatically fails this save.  On a failed save, the creature giving up its life force takes 1d6 necrotic damage while the creature receiving the life force is healed for the amount damaged.  You can have yourself be used as one of the creatures for the purposes of the spell.

At Higher Levels.  When you cast this spell using a 2nd-level or higher spell slot, the damage dealt by this spell increases by 1d6 for every spell slot above 1st.