As an action, searing flames bursts out from you. Each creature other than you in a sphere centered on you must make a Reflex saving throw.
On a failure, it takes 3d6 fire damage and is burning 2.
On a critical failure, it takes twice as much damage and is burning 4.
On a success, it takes half as much damage and is burning 1.
On a critical success, it takes no damage.
You can increase the damage by 2d6 for each additional mana expended and the burning level by for every two additional mana expended.
Blazing Inferno. You can expend 1 additional mana so the flames around you are continuous. The duration changes to 1 minute/mana, concentration and the flames spread out 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 2d6 and the burning level is reduced to 1, additional augments to the damage increase the damage by 1d6 for every two additional mana expended and the burning level by 1 for each additional mana expended, instead of the normal increase.