College of Thunder

 

Bonus Proficiency

You become proficient in Arcana and your choice between intimidation, persuasion and performance.

More Cowbell

At 3rd level your collegiate studies have taught you one thing... For a Bard it's all about Presentation. 

You gain the Thaumaturgy and Prestidigitation  cantrips, these do not count against you're total number of known spells. Additionally any spell that deals thunder damage has it's range increased by 5 feet, this increases to 10 feet at 6th level, and to 15 feet at 12th level.

 

Half Stack

Starting at 3rd level whenever you hit with a spell that deals damage while using an instrument as an arcane focus, you can expend 1 Bardic Inspiration die to Amplify the sonic impact of your magic dealing an extra 1d4 thunder damage. 

The extra damage increases as when you reach certain levels in this class: to 1d6 at 6th level, to 1d8 at 10th level, and to 1d12 at 14th.

Sonic Cell

At 6th level you have honed your skills to not just push against the Sonic Plane, but to shape and mould it. You may target one area you see within 60 feet, in that space you create a cell of pure sound any creature within the area of effect must make a dexterity saving throw against your spell save DC or be trapped within. A trapped creature cannot cast spells or make ranged attacks through the cell and has a speed of 0ft. A trapped creature may make a Strength check against your spell save DC to attempt to push out of the cell at the end of each of its turns.

On each of your turns you may use your bonus action to unleash a thunderous vibration within the cell dealing 1d12 thunder damage to all trapped creatures.

The cell is a 10 foot by 10 foot square that takes the appearance, though it is indeed invisible, of a barred prison cell and lasts for 1 minute unless cancelled early by the caster. The cell can be dispelled with dispel magic and counts as a 6th level spell. The size of the cell increases to a 20 foot by 20 foot square at 12th level. 

You can extend the duration of the Sonic Cell by expending 1 bardic inspiration die per round of combat beyond the standard duration.

Once you have used this feature you may not do so again until you have completed a long rest.

Lord Of Rock

At 14th level, you have honed your body with years of sonic punishment, you gain resistance to force and thunder damage.

Additionally you may use your mastery of the bardic forces to wreath yourself in the layers of the Sonic Plane for 1 minute gaining the following benefits:

• You use the surrounding field of force to carry your body. You gain a flying speed of 60 feet.
• When a creature comes within 5 feet of you it must succeed on a DC 15 strength saving throw or suffer disadvantage on all melee attacks made against you. They may retake this saving throw at the start of each of their turns. Ranged attackers must succeed a DC 15 dexterity saving throw or also suffer disadvantage.
• The bonus damage dice from Half Stack is doubled while wreathed.

Once you have used this ability you may not do so again until you have completed a long rest.