Blinding Smite

From Kronopolis and the Flat Plane

"Your weapon flares with bright light."

Tier 1 Radiant. The target must succeed on a Fortitude contest or be blinded. A blinded creature can make another Fortitude contest at the end of each of its turns. On a successful roll, it is no longer blinded.
Tier 2 A cone of brilliant light explodes in a 10-meter-wide cone. Each creature in the cone must make the Fortitude contest.
Tier 3 On a failed roll, a creature in the cone also takes the extra radiant damage. On a successful roll, it takes half as much damage.