Corroding Smite

As you hit the creature, your weapon corrodes away at their defenses. The target takes an extra 2d6 acid damage, and also takes a -1 penalty to their Armor Class until the spell ends. The affected target can make a Constitution saving throw at the end of each of its turns, ending the spell on itself on a success.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the initial extra damage dealt by the attack increases by 1d6 for each slot level above 1st.