Blazing Corona

A rare spell used by the Covenant of Flames  Produces three rings of Holy flames and fires them forwards. The rings of flames return to a position close to the caster before disappearing. This spell explodes on impact. 

Each creature in a 10-foot-radius cone centered on that point must make a Dexterity saving throw.
A target takes 3d10 fire damage on a failed save, or no damage on a successful one.

The fire spreads around corners. It ignites flammable objects in the area that aren't being worn or carried.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d10 for each slot level above 2nd.