R: 60’ D: [dice] rounds

You transform a light source into a radiating ball of astral light blasting all creatures near it. They takes [sum] damage and must save or be stunned for [dice] rounds. The light source is dimmed an unusable for [dice] rounds.

If 4 or more dice are invested in this spell, the blast becomes permanent and can be used as a portal to the astral plane if one survives the irradiation.

photon + multiplication

From The Unlawful Games’s Radiomancer