Draconic Blast

You reach out and raise fiery destruction into the bodies of those in the way. 

Effects anyone in a line 100 feet long and 5 fee wide. Each creature in the line must make a Dex Save. Taking 8d6 fire damage on a failed save, or half as much damage on a successful one.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.