Collage of harmonies

Bard that uses an unearthly chorus for support in his performance.

Expert Performer

An unearthly chorus supports your performance, making it more effective as you perform. You gain proficiency on Performance (Charisma) and your proficency bonus is doubled for any ability check you make with this skill.

Echoing Choir

At level 3 you learn to summon an unearthly chorus, whenever you use your basic inspiration your chorus can help you increase its effectiveness. 

• You may target yourself with your bardic inspiration, being inspired by the chorus instead.
• Whenever a bardic inspiration die is rolled, add half your proficiency bonus rounded down.

Vocal Harmony

As an action, music of a style you choose fills the air around you in a 30-foot radius during 10 minutes. The music moves with you, centered on you for the duration.

• You have advantage on concentration saving throws while the music is playing.
• While in this radious when a creature is concentrating in a spell while inside the area, you can as a reaction to make a Performance (Charisma) check against the creature Concentration (constitution), If you succeed the creature loses consentration and receives 3d6 psychic damage.

You may use this feature once per short or long rest

Diminuendo

Starting at 14th level, when you use your bardic inspiration die, the effect may diminish but remain active, slowly going away.

After using a bardic inspiration die,  the  creature who use it gains a bardic inspiration die for a smaller die (d12 - d10 - d8 - d6 - d4); A creature can only have one Bardic inspiration die, if another one is attempted the creature will retain the larger die.