Acidic Imbue

You touch a nonmagical weapon. Until the spell ends, that weapon becomes imbued with acid, giving you a +6 on attack rolls and giving it +6 acid damage.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the acid damage increases to +7. When you use a spell slot of 8th level or higher, the acid damage increases to +8.