Transfusion

If the target has previously taken damage, the caster can siphon life force from the weakened target to heal another's wounds. Make a melee spell attack against a creature within your reach. On a hit, the target takes 1d4 + your spellcasting ability modifier. One creature of your choice that you can see within range regains a number of hit points equal to half the necrotic damage the target took (rounded down) with a minimum of 1. This spell has no effect on undead or constructs.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the Healing increases by 1d4 for each slot level above 1st.