Spell Level: 5
Spell School: Evocation
Casting Time: 1 Action (a pinch of phosphorus)
Components: V, S, M (a pinch of phosphorus)
Range: 120 ft.
Area: 10 ft. Cylinder
Duration: Concentration (1 Minute)
Conditions/Effects: Damage (Radiant), Blinded, Deafened, Debuff
Saving Throw: Constitution
Ritual: No
Scaling: Spell Slot Level
Link: Link to source
You unleash a storm of flashing light and raging thunder in a 10-foot-radius, 40-foot-high Cylinder centered on a point you can see within range. While in this area, creatures have the Blinded and Deafened conditions, and they can’t cast spells with a Verbal component.
When the storm appears, each creature in it makes a Constitution saving throw, taking 2d10 Radiant damage and 2d10 Thunder damage on a failed save or half as much damage on a successful one. A creature also makes this save when it enters the spell’s area for the first time on a turn or ends its turn there. A creature makes this save only once per turn.
Using a Higher-Level Spell Slot. The Radiant and Thunder damage increase by 1d10 for each spell slot level above 5.