Blaze's Star Fury

Flaming bright stars burst forth 50 feet in the air and pummel an area you're able to see within range. Each creature in that area must make a Constitution saving throw. A creature takes 6d8 fire damage and is stunned on a failed save. On a successful save, it takes half as much damage and doesn't become stunned. 

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 2d8 for each slot level above 5th.