Blade Barrage

You fill yourself with the Elemental Power of Solar Light and with a sweep of your arms, you fling out a barrage of Flame blades from each of your hands. Each hostile creature in a 40-foot Cone emanating from you must make a DEX Saving Throw equal to your Spell Save DC. A target takes (10d6)+SM of Fire damage on a Failed save, or half as much damage on a Successful one. 

SM=Spellcasting modifier.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by (1d6) Fire for each slot above 4th Level.