Cruel Sun

You channel the light within you,  the light that exists in all creatures of good and concrete it into a blazing ball of flame, ressmbling the sun. It's brilliance unparralelled and heat radiating off it, the very air begins to wave and crackle with its heat. You throw this sphere at your enemies and ignite them with its majesty. 

 Make a ranged spell attack at a target within range. On a hit the target takes 5d8 fire damage.

In addition any creature within 5 feet of the original target takes half that damage from the radiant heat and must make a con save, being blinded for 1 turn on a failure. 

Any flammable objects within 30 ft of impact ignite into flames.

If you cast this spell with a slot of 3rd or above,  the damage for both the initial impact and the radiant heat increases by 1d8 and the radius increases by 5 feet for each spell level above 2nd.