Arenthi's Wrath

You call on Arenthi to empower you to strike true. For the next minute, your weapon and unarmed attacks deal an extra 1d4 radiant damage, and targets struck by these attacks cannot become invisible for one hour or until they are at least 400 feet away from you.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the extra damage increases by 1d4 for each slot level above 3rd.