Path of the Earsplitting Mania

Some barbarians exist to make as much racket as they can. The Path of the Earsplitting Mania uses the power of one's voice to control the battlefield. Your rage brings forth the tempo of battle to dance with the bloodshed and chaos you bring.

Bards may be able to cast their silly spells by singing and flailing on their instruments. The Barbarian of the Earsplitting Mania sing their hearts out will taking yours. Screaming, belting, anything they can do to be loud is the one thing that drives the fire within.

(Please help me test. I'm not sure how some of the abilities should work against magic damages and such.)

Rhythm of War

Starting when you choose this path at 3rd level, your voice becomes a weapon during your rage. As a bonus action during your rage, you may use your voice to create a sonic boom. You choose whether you make a 30-foot by 5-foot line; or, make a 5-foot radius centered on you. Every enemy effected makes a Constitution save vs the Barbarian's DC (8 + your proficiency modifier + your Constitution modifier). On a failed save they take 1d8 damage; otherwise, they take half damage.

At thunder damage increases to 2d8 at 7th level, 3d8 at 12th level, and 4d8 at 17th level.

Powerful Voice

When you choose this path at 3rd level, your voice becomes as powerful as your arm. You add your proficiency modifier to all Charisma ability and skill checks involving your voice.

Tempo Rubato

Beginning at 6th level you feel the music of nature beating in your chest. You become immune to being Deafened and have advantage to all saves involving sound.

Taunting Crescendo

Starting at 10th level, you become the center of attention. As a bonus action, while raging, you beat your chest and taunt all enemies within 30-feet of you. They must make a Wisdom save against your save DC, 8 + your proficiency modifier + your Constitution modifier. On a failed save they must try to attack you for 1d4 turns. On a success, they become immune to this effect for 24 hours.

Your AC increases by your Constitution modifier while this effect is ongoing. You can use this ability once per long rest.

Savant Counterpoint

Starting at 14th level, the music of life drives your body. When you suffer a critical hit you may us your reaction to make an attack roll against the damage sources AC. If you hit, you reflect half that damage as thunder damage.

You can use this ability once per long rest.