Gamma Burst

1st-level evocation
Casting time: 1 action
Range: Self (10-foot radius)
Target: Creatures within the 10-foot emanation
Components: V
Duration: Instantaneousd
Classes: Sorcerer
Subclasses: Sorcerer (Sun-Hollowed Soul)

Scintillating radiance builds within you and bursts outward in a bright flash in a 10-foot-radius sphere. Creatures within range must succeed on a Constitution saving throw or take 2d8 radiant damage and become poisoned until the start of your next turn. On a successful save, the creature takes half damage and is not poisoned.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.