Cloud's Horn of Disruption

pulling out a small piece of fine metal, and blowing it summons a horn from the aether, it hovers in place and sheds a soft blue light.

On a bonus action, you can either move the horn 20 ft, or cause the horn to emit a otherworldly sound that shudders those ill prepared to the bone, causing those affected to be in a state of surprise and shock. Those with in 15 ft of the horn must make a Wisdom saving throw, on a fail they take 3d8 psychic damage and have disadvantage on their next attacks. On a success they take half the damage and don't suffer from disadvantage.