Life Transference

Level 3 Necromancy

(Cleric, Wizard)
Casting Time: Action
Range: 30 feet
Components: V, S
Duration: Instantaneous
You sacrifice some of your health to mend another creature's injuries. You take 4d8 True damage, and one creature of your choice that you can see within range regains a number of Hit Points equal to twice the damage you take.
Using a Higher-Level Spell Slot. The damage increases by 1d8 for each Spell Slot level above 3.