Arcane Discharge

A bright purple streak eruputs from both your hands from to a point you choose within range and then blossoms with a low hum to a mild magical force implosion. Each creature in a 60-foot-radius Sphere centered on that point makes a Dexterity saving throw, taking 10d6 force damage on a failed save or half as much damage on a successful save.

Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 6.