As an action, a creature that you can touch or see within 18 meters must make a Fortitude saving throw.
On a failed save, you blind its eyes with light as it takes 2d6 radiant damage and is blinded for the duration.
On a successful save, it takes half as much damage and isn’t blinded.
A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
You can increase the damage by 6d6 for each additional mana or psi expended.