The monk has unlocked the ability to create blades that they have complete and total control over. When these blades hit their target, they mark them and wait to be called back to their user. These blades are an extension of their user and reflect the personality, morals, and even appearance of their user.

Blade Craft

You learn to create ethereal blades. These blades take their appearance based off of your appearance, morals, and personality.  They take on any effects that would be added to your Unarmed Strikes by your Monk Class, but are do not count as melee attacks.

Blade Mark

Whenever you hit an enemy with one of your Blades,  the enemy becomes marked. As an action and for one ki point you can pull marked blades from their target back to you, dealing damage based off of how many targets are marked. You can mark a target more than once, but it will not be considered a Unique mark. If a target dies before you used Bladecall, they are no longer considered a Unique Target. 

1-2 Unique Targets marked : 1d4 per mark
3 Unique Targets marked : 1d6 per mark
4 Unique Targets marked : 1d8 per mark
5 Unique Targets marked : 1d10 per mark

Thornmail

At the cost of one ki point and a bonus action, you create three floating blades around you for an hour. If you are hit, a blade is consumed and the target is marked. 

Bladecaller's Parry

After you successfully catch a projectile with Deflect Missile, you can spend one Ki point to transform the projectile into a more unstable Blade. When you return the projectile it deals damage based off Blade craft, Halved, and does not apply a mark due to the instability.

Bladestorm

As an action and the cost of two ki points, you leap into the air and throw blades into a 15 cone. Every enemy in this cone must make a Dex save against your Ki save DC. If they fail, they are marked.