Cascading Radiance

A wave of brilliant light sweeps out from you.
Each creature in a 15 ft radius makes a Con save
or is blinded until the end of your next turn.
Any fiend or undead makes a Cha save, taking
5d8 radiant damage on a failure, or half on a
success. If any of this spell's area overlaps with an
area of magical darkness or that of an illusion
spell of 3rd level or lower, that spell is dispelled.
At Higher Levels. Each additional level increases
the damage by 1d8.