Bagpipes of the 82nd Highlanders

The bagpipes of the 82nd Highlanders is a relic of wars long gone. The highlanders were an expert combat unit who could trudge through any terrain to reach their target before charging into combat with the sounds of their bagpipes and guttural chants leading the way.

Whilst attuned and holding these bagpipes, you are immune to fear and you can perform a number of songs per long rest. The Bagpipes of the 82nd Highlander has 3 charges and in order to play a particular song, you must first expend the number of charges required. All expended charges are returned after a long rest.

Through mud and snow (1 charge)
As an action, you can choose up to 5 allies within 20 feet that can hear you. These allies ignore any movement penalties imposed by difficult terrain for two rounds.

We turn their strengths against them (1 charge)
As an action, choose up to two creatures within 20 feet that can hear you. Each of these creatures must succeed on a charisma saving throw against your spell DC. On a fail you can impose disadvantage on a single saving throw (Constitution / Strength / etc) for a minute. At the end of each subsequent turn, they can make another charisma saving throw against your spell DC, ending the effect on a successful save.

Charge of the Highlanders (2 charges)
As an action, you can choose up to 3 creatures within 20 feet that can hear you. These creatures can immediately make a free move. This movement does still trigger attacks of opportunity. 

If you have proficiency with a given musical instrument, you can add your proficiency bonus to any ability checks you make to play music with the instrument. A bard can use these bagpipes as a spellcasting focus.

Notes: Immunity: Frightened, bard.