Arc Blast

You channel arcane energy into your body, causing you to become incapacitated until the end of your next turn, whereupon you release a wave of destruction. All creatures within range must make a Constitution saving throw. A target takes 10d8 thunder damage and suffers a deafened condition for one minute on a failed save, or half as much damage and no deafened condition on a successful one.

When you cast this using a spell slot above 3rd, the damage of Arc Blast increases by 1d8 for each spell slot level above 3rd.