Musical Apparatus

3rd-Level Artificer, Composer Feature

You create a signature musical instrument. At the end of a long rest, you can use your smith's tools to create a Musical Apparatus. You are proficient with this Apparatus and it can be used as a spellcasting focus by you. When you make an ability check with your Musical Apparatus, you can add double your proficiency bonus to the result of your roll.
You can only maintain one Apparatus at a time. If you create a second, the previous Apparatus becomes unusable.
Upon creating your Musical Apparatus, you can weaponize it, choosing one of the following options below:
Raucous Blast. Your Apparatus can assault creatures with a blast of sound. As an action, make a spell attack against a creature within 60 feet that can hear you. On hit, the creature takes 1d8 thunder damage and is deafened until the start of your next turn. The damage increases by 1d8 at 5th level (2d8), and again at 11th level (3d8), and 17th level (4d8).
Ringing Strike. Your Apparatus is a simple weapon with the versatile property, and it deals 1d8 (1d10) bludgeoning damage on hit. You are considered proficient with it, and you can use your Intelligence, in place of Strength, for attack and damage rolls. In addition, you can cast the booming blade* cantrip as long as your Apparatus is the material component.