Dune

6th-level evocation
Casting time: 1 action
Range: 30-foot cone
Target: Each creature in a cone
Components: V S
Duration: Instantaneous
Classes: Druid, Sorcerer, Wizard
Subclasses: --

Your face grows gaunt as a torrent of sand and insects pour forth from your unnaturally elongated mouth. Each creature in a cone in front of you mustmake a Dexterity saving throw. A creature takes 6d6 slashing damage on a failed save, or half as much on a succesful one. The area of the cone counts as lightly obscured.

On failed save, a target with a wisdom of 10 or lower is also frightened of you until the end of your next turn.