Vibration Field

The caster uses the instrument or object to create a consistent noise. From a point within range a 20ft sphere of vibration forms. Any creature within the sphere must make a Constitution saving throw against the spell save DC.

If the saving throw fails the creature is stunned for the duration and takes 2d4 Thunder damage per turn. Upon a successful save the target takes half damage. At the beginning of each of its turns the target can repeat the saving throw at disadvantage.