As an action, sunlight bursts from you. Each creature on the ground other than you in a sphere centered on you must make a Fortitude saving throw.
On a failed save, a creature takes 2d8 radiant damage and is blinded until the end of its next turn.
On a successful save, a creature takes half as much damage, but isn’t blinded.
You can increase the damage by 2d8 for each additional mana or psi expended.
You can expend 1 additional mana or psi so the sunlight continuously radiates from you. The duration changes to 1 minute/mana, concentration and the sunlight radiates from you in an aura shaped as a sphere. Until the spell ends, the aura moves with you, centered on you.
Whenever a creature enters the area for the first time on a turn or starts its turn there, it must make the Fortitude saving throw. The damage is reduced to 2d4 and additional augments to the damage increase the damage by 1d4 for each additional mana or psi expended, instead of the normal increase.
You can expend 1 additional mana or psi if the sunlight continuously radiates from you, so the corona hedges out undead creatures. The corona prevents an affected creature from passing or reaching through. An affected creature can cast spells or make attacks with ranged or reach weapons through the corona.
If you move so that an affected creature is forced to pass through the corona, the spell ends.