Touch of the Ravager

You cause the fists of one willing creature you touch to fume with the decay of death. Until the spell ends, the target gains a +1 bonus to attack rolls and damage rolls made with unarmed strikes. For the duration, the target's unarmed strikes count as magical for the purpose of overcoming resistance and immunity to nonmagical attacks and damage.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the bonus increases to +2. When you use a spell slot of 6th level or higher, the bonus increases to +3.