Dawnburst

When casting this spell An apple sized mote of light appears in your palm and is launched within the range. When it reaches its target it erupts in dazzling bright light. All targets in a 15' radius must make save Constitution saving throw. On a failed save, a creature takes 6d6 radiant damage and is blinded for 1 round. On a successful save, it takes half as much damage and isn't blinded by this spell.

If the target's are undead or a fiend the d6 becomes d8. This is treated as exposure to sunlight for creatures effected by such things.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 2d6 and extends the duration of blind by 1 round for every two slot levels above 2nd.