College of Metal

You are one of the few and proud inducted into the prestigious College of Metal.

A strange breed of Bards, the members of this college are known for their love of loud music and raucous, near-violent parties which often involve an odd form of dance-combat; a style copied by their more enthusiastic fans.

They wade ecstatically into war, being able to strike hard against their foes or empower their allies with their music. The flames of the Abyss in their tongues, the horns of Valhalla in their songs, the spirit of demons and the undead in their hearts; they are like roiling thunder crashing through the battlefield with booming voice and cacophonous performance.

Bonus Proficiencies

When you join the College of Metal at 3rd level, you gain proficiency with the Intimidation skill as well as medium armor, heavy armor, and martial weapons. Additionally, you learn the Shocking Grasp cantrip. This does not count against your number of total cantrips known.

Onslaught of Sound

At 3rd level, you can amp yourself up with a powerful solo and weave the noise into a physically jarring and shocking cacophony around you. As a bonus action, you can expend a use of your bardic inspiration to change the damage type of your weapon attacks to lightning for 1 minute.
Additionally, after you hit a creature with a melee weapon attack, you can deal lightning damage to each creature of your choice within 10ft of you. The lightning damage is equal to a roll of your Bardic Inspiration die. You can use this ability once per round during the 1-minute duration.
This radius increases when you reach certain levels in this class: 15 feet at 5th level, 20 feet at 10th level, and 30 feet at 15th level.

Thunder Rolls

At 6th level, you masterfully integrate your chords into your combat:

• You learn the Thunderclap cantrip, as well as the Thunderwave and Shatter spells. These do not count against your number of spells or cantrips known.

• While using Onslaught of Sound, when you hit a creature with an attack on your turn, you may cast a cantrip as a bonus action.

• You can attack twice, instead of once, whenever you take the Attack action on your turn.

Violent Symphonies

Starting at 14h level, you can unleash a performance the likes of which few have experienced.

You have the ability to stir violent emotions in others with your sound, causing them to act aggressively. As a bonus action, you can pump the blood of creatures of your choice within 30ft that can hear you for 1 minute. Whenever you take the attack action on your turn, the chosen creatures can use their reaction to move up to half their speed and then make a single weapon attack and can add the amount of lightning damage equal to your charisma modifier. 
You must concentrate on this feature, as if concentrating on a spell.
Once you use this feature, you can't use it again until you finish a short or long rest.