Choreo of the Brandished Blade

Masters of blade, spear, whip, and staff, Dancers of this Choreo blend artistic grace and martial prowess to put on breathtaking displays that are as beautiful as they are deadly.
Their performances call for more than just raw strength or speed, but precision and control of both one’s weapon and body, with Dancers often showing how well they can dodge a weapon as well as wield one. Devoting one’s self to the study of this Choreo is not for the faint of heart, as this style calls for the Dancer to take center stage and put one's life on the line, both in performance and in combat. Some consider this Choreo to be the counterpart to a certain Bardic College, though most practitioners of this Choreo are quick to dismiss such comparisons, typically remarking that Bards rely too heavily on magic to awe and captivate a crowd, whereas Dancers rely purely on their own skill and ability.

Weapon Arts and Flares

You gain proficiency with martial weapons that have the finesse property and the Feat Dancing Flares

Additionally, while you are not wearing armor or wielding a shield, your Armor Class equals 10 + your Dexterity modifier + your Charisma modifier.

Saber Dance

You gain Flare Dice, which are 1d6 at 3rd level, 2d6 at 5th level, 3d6 at 9th level, 4d6 at 13th level and 5d6 at 17th level

You learn the Saber Dance flare. 

Saber Dance

Performing Time: 1 action

Movement: 30 feet

Duration: Instantaneous

While using your movement, you make an attack with a melee weapon that has the finesse property. If the attack is a critical hit, you can add your flare dice to the damage roll.

 

It does not count against the number of flares you know. While other choreos might adapt weapons into their dances, this choreo specializes in this flare. You can add your flare dice to the damage you deal with Saber Dance on an attack roll of 19 or 20 (before adding modifiers).

Dancing Blade

9th-level Choreo of the Brandished Blade feature
Whenever you finish a long rest, you can touch one meleeweapon that you are proficient with and that lacks the two-handed or heavy properties. The weapon becomes a dancing blade imbued with a facsimile of life until it is
reduced to 0 hit points, you die, or you use this feature again. It is friendly to you and your companions and obeys your commands.
In combat, the dancing blade shares your initiative count, but it takes its turn immediately after yours. It can move and use its reaction on its own, but the only action it takes on its turn is the Dodge action, unless you command it to take another action as a bonus action or as a part of performing your Saber Dance flare. That action can be one in its stat block or some other action. If you are incapacitated, the dancing blade can take any action of its choice, not just Dodge.

Once you create a dancing blade with this feature, you can't do again until you finish a long rest.

Dancing Blade

Tiny construct

Armor Class 17 (natural armor)

Hit Points 10 + five times your level

Speed 0 ft., fly 50 ft. (hover)

STR DEX CON INT WIS CHA

17 (+3) 14 (+2) 11 (+0) 4 (-3) 10 (+0) 6 (-2)

Saving Throws DEX +2 plus PB

Damage Immunities poison, psychic

Condition Immunities blinded, charmed, deafened, frightened, poisoned

Senses blindsight 60 ft. (blind beyond this radius), passive Perception 10

Languages understands the languages you speak

Challenge -- Proficiency Bonus (PB) equals your bonus

False Appearance. While the blade remains motionless and isn't flying, it is indistinguishable from its normal form.

Immutable Form. The item is immune to any spell or effect that would alter its form.

Striking Beauty. The weapon's attacks count as magical for the purposes of overcoming resistance and immunity.

Actions

Strike. Melee Weapon Attack: Attack = DEX or STR modifier + Proficiency bonus to hit, reach 5 ft., one target you can see. Hit: 1d10 + PB (bludgeoning, piercing, or slashing) damage.

Fluid Momentum

13th-level Choreo of the Brandished Blade feature You can use Saber Dance as a reaction to a creature missing you with a melee attack.
Further, if you hit a target with your Saber Dance flare while you have advantage on the attack roll, the next attack roll made against the target after your turn has advantage.

Dazzling Destruction

17th-level Choreo of the Brandished Blade feature.
When you perform your Saber Dance flare or order your Dancing Blade to attack, you add your flare dice to the damage you deal with it on an attack roll of 18-20 (before adding modifiers).