Jarreth the Titans Battle Roar

  Creatures within a 10 foot cube of you that can hear you must succeed on a Wisdom save of 14 or become frightened of you until the end of your next turn, make a Constitution saving throw of 15 or take 3d8 thunder damage and be pushed 15 feet away from you, make a Dexterity saving throw of 15 or take 1d6 bludgeoning damage and be knocked prone. The ground becomes difficult terrain except to you and your allies, anything loose in that area is thrown 15ft backwards. Any creature will take an additional 1d6 bludgeoning from the flying debris if any.  The spell emits a thunderous boom audible out to 100ft.