Part of a set of magical instruments invented by a collection of musicians created as a means to perfectly channel the arcane weave through performance. To the few that have heard or seen one of these magical instruments, they are the most potently passionate works of art that have ever been created. While not all of the instruments that were designed have been built, ambitious notes from their blueprints imply that the resonating sound of their collective symphony would be heard in every plane of existence.
This magic polearm takes the form of a large, glistening ruby red metal bassoon; the six pieces making up the instrument are connected with beautiful golden bands, with a mechanism at the butt of the bassoon where the pipe bends. Upon speaking a command word, the mechanism flicks the large central pipe of the bassoon outwards and the instrument transforms into a straight, 10 ft long pipe.
While attuned to this weapon, you gain +2 to attack rolls and damage rolls with it.
Powerful Song- When you attack a creature with this magic weapon and roll a 20 on the attack roll, Basso-Universum bellows a melody that bring tears to allies and enemies alike. Friends that are within 60 ft of you gain one bardic inspiration die equal to one of your own bardic inspiration dice (d6 minimum), and the target creature you attacked must make a Constitution saving throw against your spell save DC. On a failure, the target creature is deafened for 1 minute. This effect can only trigger once per day, and resets at dawn.
Bolstering Melody- As an action, you can play a string of notes on Basso-Universum that increase the resilience and fighting spirit of your allies. Friends within 30 ft of you gain temporary hit points equal to 3d6 + your proficiency bonus. This effect can only be used once per day, and resets at dawn.
Proficiency with a Halberd allows you to add your proficiency bonus to the attack roll for any attack you make with it.
This weapon has the following mastery property. To use this property, you must have a feature that lets you use it.
Cleave. If you hit a creature with a melee attack roll using this weapon, you can make a melee attack roll with the weapon against a second creature within 5 feet of the first that is also within your reach. On a hit, the second creature takes the weapon’s damage, but don’t add your ability modifier to that damage unless that modifier is negative. You can make this extra attack only once per turn.
Notes: Bard, Heavy, Reach, Two-Handed, Cleave
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