Discharge: Wind Scar

When you take the Attack action, you can spend 2 charges to replace one of your attacks with a "Wind Scar." You slash at the air, creating a disruptive wave in a 15-foot cone. Each creature in that area must make a Constitution saving throw. On a failure, they take 3d6 thunder damage and are pushed 10 feet away from you and knocked prone, halving the damage on a success.