Bardaxe

This steel battleaxe wields both power and song, with an indentation in the axehead that functions as a lute. Whenever you enter combat, you may roll a Charisma (Performance) check as an action to cause this battleaxe's lute to play a song of your choice until combat ends, up to 10 minutes. The lute continues to play on its own once you begin the song. On a roll of 10 or higher, you may choose one creature other than yourself within 60 feet of you who can hear you. That creature gains one Bardic Inspiration die, a d6. If you are a Bard of 5th level or higher, the die matches your Bardic Inspiration die instead.

Once while your song is playing, the creature can roll the die and add the number rolled to one ability check, attack roll, or saving throw it makes. The creature can wait until after it rolls the d20 before deciding to use the Bardic Inspiration die, but must decide before the DM says whether the roll succeeds or fails. Once the Bardic Inspiration die is rolled, it is lost. A creature can have only one Bardic Inspiration die at a time.

You can play music at the beginning of any combat encounter, but you may only provide one Bardic Inspiration per long rest using this feature.

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

Notes: Bonus: Ability Checks, Damage, Buff, Combat, Instrument, Versatile, Topple