Chaos Blast

You fire a burst of raw arcane energy from your outstretched palm in a Line that is 25 ft. long and 5 ft. wide. Or, you can release the energy in a 20-foot radius Sphere. Each target in that area must make a Dexterity saving throw, taking 3d8 damage on a failed save, or half as much on a success. The damage type is determined by rolling a 1d12:

1. Force,  2. Fire,  3. Lightning,  4. Acid,  5. Thunder,  6. Soul,  7. Aetherion,  8. Wrath,  9. Cold,  10. Necrotic,  11: Radiant,  12: A damage type of your choice. 

Using a Higher-Level Spell Slot. The damage increases by 1d8 for each spell slot level above 2.