Cautery

You summon a concentrated flame in your palm or fingertips to cauterize an injury. You touch a willing creature and heal the target for 2d4 + your spell casting modifier. If the creature is unwilling, make a melee spell attack. You may then choose to heal the target for 2d4 + your spell casting modifier or damage them for 2d8. 

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the spell's healing increases by 1d4 or the spell's damage increases by 1d8 for each slot level above 2nd.