As an action, you can spend a Bardic Inspiration to cast command without expending a spell slot, and you can continue issuing commands while concentrating.

As a bonus action, spend a Moxie Point to gain temporary hit points.

Spend a Moxie Point to make two unarmed strikes as a bonus action.

If you are unarmed or only wielding Pugilist weapons in light or no armor, you can make a bonus action unarmed strike.

As a bonus action, blind a nearby creature with thrown grit and detritus.

As a bonus action, resist bludgeoning, piercing, and slashing damage and ignore exhaustion below 6 for 10 minutes.

You know Bardic Inspiration and can use a bonus action to inspire allies with a die that improves as you level.

As a bonus action, you expend Bardic Inspiration to grant allies temporary hit points and allow them to move without provoking opportunity attacks.

You can use a reaction to inspire an ally who fails a saving throw, attack roll, or ability check.

Spend a Moxie Point to make an unarmed strike and Dash or Disengage.

When taking damage, regain all expended Moxie Points. If bloodied, gain extra temporary hit points.

Failed STR, DEX, CON, or CHA check can be boosted by rolling Fisticuffs die and adding it to the check.

On an unarmed hit, you can also grapple or shove.

Roll a Fisticuffs die instead of normal unarmed strike damage, improved by level.

Improvised weapons gain Sap mastery for you.

While unarmored or in light armor without a shield, AC equals 12 plus CON modifier.

A hit with an unarmed strike or improvised weapon can deal force damage instead of normal damage.

When you hit with an unarmed strike or pugilist weapon, you can expend Moxie to deal maximum damage and regain the point on a hit.

Your heel-heavy insults force a Wisdom save or psychic damage and disadvantage against others until your next turn.

When you deal damage, the target must save or its speed becomes 0 for 1 minute.

When you deal damage, the target must save or attacks against it have advantage until the end of your next turn.

You can choose 3 skills to gain expertise, doubling your proficiency bonus.

You can learn 2 bard cantrips and a number of bard spells known appropriate to your level.

You have proficiency with light armor, simple weapons, hand crossbows, longswords, rapiers, and shortswords.

You can focus on one instrument or performance tradition to channel your magic and artistry.

After a short or long rest, one ally who hears your performance can gain extra healing from spending Hit Dice.

You can add half your proficiency bonus, rounded down, to any ability check that does not already include your proficiency bonus.

You gain a second set of skill expertise.

You join the College of Glamour, gaining fey-touched stage magic and command over beauty and awe.

Creatures charmed by you must try to comply with your performance after you entertain them for 1 minute.

Your Bardic Inspiration die becomes a d10.

You can use Bardic Inspiration after a short or long rest without expending spell slots for magical recovery.

Your Bardic Inspiration die becomes a d12.

You gain 2 additional skill expertises.

You learn 2 spells from any class list, which count as bard spells for you.

Your charm and presence create a devastating aura, making you difficult to ignore or strike.

You learn 2 more spells from any class list, which count as bard spells for you.

You regain one use of Bardic Inspiration whenever you roll initiative and have none left.

You gain the final set of skill expertise from bard progression.

If performance matters, Serriah can usually find free room, board, and attention from those who enjoy their act or want to be associated with their fame.