Byceptine's Arcane Comet

You surround yourself in powerful magic, leap into the air and crash down into a target area within 120 FT. You then deal Area of Effect Type damage within a 15 Ft sphere. 

All creature/s within the 15 ft sphere must make a Dexterity saving throw. The creature/s take 10d10 force damage on a failed save and take half as much on a successful save.

At Higher Levels. When you cast this spell using a spell slot of 7th level or higher, one additional d10 for each slot level above 6th.