Trust me - I am a healer

A creature you touch regains a number of hit points equal to 1d12 + your spellcasting ability modifier. At the same time spell target takes 1d6 necrotic damage. If you don't like the healing roll you can reroll it but doing so you must also roll at Wild Magic Surge table. 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 1d12 and for each slot level above 1st, but damage also increases by 1d6. (You can reroll as many healing dices as you want, but you can do it only once per spellcasting).