Thundering Scream

You release a scream powerful enough to split the ground and have all nearby creatures on their knees.

The scream is audible in a 600 foot sphere. Any creature in this area must make a constitution saving throw or take 18d6 thunder damage and be deafened for one hour. on a successful save, the creature takes half damage and isn't deafened.

At Higher Levels. When you cast this spell using a spell slot of 9th level, the spell also summons a Elder Tempest.