SFS Standard Supernova [two-actions] Feat 4

Frequency once per 10 minutes
Requirements You’re photon-attuned.

You unleash your pent-up energy, causing it to erupt like the stellar events that birth and end stars. You can choose to affect creatures in a 15-foot or 30-foot emanation. Each affected creature takes 4d8 fire damage and must attempt a Reflex save against your class DC. If you choose the 30-foot option, you instead deal 4d6 fire damage.
Critical SuccessThe creature is unaffected.
SuccessThe creature takes half damage and is dazzled for 1 round.
FailureThe creature takes full damage and is blinded for 1 round.
Critical FailureThe creature takes double damage and is blinded for 1 minute.

Level (+1) Increase the damage by 1d8 (or 1d6 for the 30-foot option).