Lavenblade

First created by Daizo Tsurugi the Lavenblade is a powerful weapon and ancient art marrying artistic flow with cold steel, the Lavenblade an flying weapon bound to its user glides across the battlefield its user and itself intertwined. 

The Lavenblade

When you take this subclass you enchant one of your weapons which becomes your Lavenblade. When weilding you Lavenblade you can command it to fly beside you, when moving you may instead move your Lavenblade as it consumes your movement. When you make a weapon attack you may attack from your Lavenblades location or from yourself with another weapon you are weilding or another form of attack. You may also make opportunity attacks with your Lavenblade when a creature leaves the weapons reach. 

When you cast a spell which requires a weapon such as the Booming Blade cantrip or the Steel Wind Strike spell as long as you have hands free to cast the spell you may use your Lavenblade and its location as a part of your spell.

To weild a Lavenblade you must have hands free equal to the amount of hands required to weild this weapon, while moving a Lavenblade it may move through the space of another creature.

You may have one Lavenblade at a time and may change which weapon is your Lavenblade is at the end of a long rest as long as you spend 1 or more hours enchanting your weapon.

Elegant Blade

When you reach 7th level, your speed increases by 15ft, additionally, the first time you land a weapon attack on your turn you may move your blade 5ft and make another weapon attack against a different target. You may repeat this until you miss a weapon attack or there are no new targets. You cannot make multiple attacks against a creature using this feature.

Flash of Light

Upon reaching 10th level, your speed increases by 15ft and you have advantage on initiative rolls.

Stormburst

Starting at 15th level, you may as a bonus action teleport to your Lavenblade and weild it, if it is in an unnocupied space.

Burning Supernova

Upon reaching 18th level, You can push your body beyond for its limits. You may as a bonus action activate Burning Supernova, for 1 minute your base speed is doubled and you may make one additional weapon attack when you take the attack action. At the end of this 1 minute you take 3 levels of exhaustion. Once you use this feature you cannot use it again till the end of a long rest.

Blade Flourishes

You learn new ways to command your Lavenblade called Blade Flourishes. You learn two Blade Flourishes at 3rd level and another at 7th,10th,15th and 18th Level

Bishop Strike

While in a diagonal line to your Lavenblade you may use a bonus action to have your weapon fly back to your hand, you may make a weapon attack against one creature that your blade passes through.

Dancing flow

After landing a weapon attack with your Lavenblade you may move your Lavenblade upto 10ft without consuming movement.

Flash Strike

As an action you throw your blade forward in a line upto 60ft and make a weapon attack against each creature that the blade passed through.

Prepared Blow

While your Lavenblade is within reach of an ally and a foe you may use your bonus action to prepare an attack. When that ally makes a weapon or spell attack against the foe you may as a reaction make a weapon attack against the foe with advantage.

Warding blade

When an ally within reach of your Lavenblade is targeted by an attack you may use your reaction to increase your allies AC by 1d4 for that attack.

Whirlwind Slash

As an action you spin your blade up and move it in a 10ft line, you make a weapon attack against each target your blade passed thorugh within its reach,  each creature hit takes damage equal to proficency bonus, the damage matches your weapons damage type.

Zephyr Flash

As a bonus action you may consume all of your movement to convert your movement into Zephyr Flash, you can do one Zephyr Flash for each 15ft of movement consumed. 

Zephyr Flash - You move your blade in a 15ft diagonal line and deal damage to any targets you pass through, the damage you deal is equal to proficency bonus and matches your weapons damage type.  If your zephyr flash was preceeded by a former zephyr flash you cannot move your blade along the same diagonal for this flash.