Adamantine Tuba, +1

You have a +1 bonus to attack and damage rolls made with this magic weapon, which deals 2d6 thunder damage instead of its normal bludgeoning damage. Whenever you hit an object with this weapon, the hit is a critical hit.

As an action, you can unleash a 30-foot cone of sound from the weapon. Each creature in the area must make a DC 14 Constitution saving throw. On a failure, a creature takes 4d8 thunder damage and becomes deafened for 1 minute. On a success, a creature takes half as much damage and isn't deafened. A deafened creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. This action emits a discordant tuba noise audible out to 300 feet. Once this action is used, it can’t be used again until the next dawn.

A bard can use a musical instrument as a spellcasting focus, substituting it for any material component that does not list a cost.

Each type of musical instrument requires a separate proficiency.

Proficiency with a Greatclub allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Bonus: Magic, Deafened, Damage, Combat, Two-Handed, Push