Debugging Smite

The next time you hit a creature with a weapon attack before this spell ends, the weapon gleams with astral radiance as you strike. The attack deals an extra 2d6 radiant damage to the target, which the target sheds dim light in a 5-foot radius and crechers that are not alise in it get disavontis on saving rolls until the the end of the casters next tern 

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