Divine Storm

Calling upon the powers of either the gods or the universe itself, you create a terrifying storm of immense power unknown to the powers of wizards and warlocks. Everyone in a 30-foot radius must make a Con. save against your spell save DC. If they fail, they are stunned for one round and take 12d10 magical fire or lightning damage. If they succeed, they take 6d10 magical fire or lightning damage and are not stunned. You can dispell the storm when you have your next turn. But when you dispell, you must make a Con. save against your own spell save DC. If you fail, you take 12d6 psychic damage and gain level one exhaustion. If you succeed, you take 4d6 psychic damage.