Transfer of Life

The reach of your shadow-wreathed hand can siphon life force from others to heal the wounds of your companions. Make a ranged spell attack against a creature within your range. On a hit, the target takes 2d6 necrotic damage, and a companion within 10 feet of the target regain hit points equal to half the amount of necrotic damage dealt. 

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