Thunderous Retribution

A powerful bolt of lightning surges from above and slams into a creature within range that you can see. The target must make a dexterity saving throw. On a failed save the target takes 5d10 lightning damage and is knocked prone and stunned for 1 round, or half as much damage on a successful save and isn't stunned or knocked prone. If the spell reduces the targets hit points to 0, the target is obliterated, along with everything it was wearing and carrying, except for magic items. Additionally, any creatures within 20 feet must make a constitution saving throw. On a failed save they take 2d10 thunder damage and are deafened for 1 round, or half as much damage on a successful save and are not deafened.

At Higher Levels: When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d10 for each slot level above 5th.