Spell Level: 7
Spell School: Evocation
Casting Time: 1 Action
Components: V, S
Range: 150 ft.
Area: 10 ft. Cube
Duration: Instantaneous
Conditions/Effects: Damage (Fire)
Saving Throw: Dexterity
Ritual: No
Scaling: None
Classes: Cleric, Druid, Sorcerer
Link: Link to source
A storm of fire appears within range. The area of the storm consists of up to ten 10-foot Cubes, which you arrange as you like. Each Cube must be contiguous with at least one other Cube. Each creature in the area makes a Dexterity saving throw, taking 7d10 Fire damage on a failed save or half as much damage on a successful one.
Flammable objects in the area that aren’t being worn or carried start burning.