After some brief training as a Monk, you became an apprentice of the Way of the Nightcrawler, a mystical art of dispersing one's atoms into shadow before reforming them elsewhere. The art is based around ultimate unpredictability and evasion, following the founder of this Path: The Nightcrawler.

Channel the Crawler

Starting 17th level, you are able to focus your Ki and manifest the Nightcrawler: causing your body to become smoky and elusive, forming sharp claws and a tail around your body.

You spend 5 Ki points as an action to channel the Nightcrawler for 1 minutes. While in this form you have the following benefits:

• Your unarmed strikes deal slashing damage
• Any enemy you deal damage to with your claws rolls a CON save with DC equal to 10 + the number of attacks you've made so far this turn; on a fail you inflict bleeding: the target receives the damage modifier of the attack that bled them at the start of their next turn.
   
• You can trade all of your movement speed for teleport speed.
• Your climbing speed becomes equal to your total movement speed.
  
  
• You can wrap your tail around a target and teleport with them as an action; if the target is unwilling then they must roll a CON save against your Spell Save DC.
  If you choose to teleport this target into the air and then drop them, the target takes the damage from the fall, is stunned until the end of their next turn and is left prone.
  
  
• Your eyes are under the effect of See Invisibility 
• you are resistant to all non-magical damage.

 

Bamf

Starting 3rd level, your attunement with shadows allows you to disperse your atoms in a cloud of smoke and reform them elsewhere.

Your Unarmoured movement speed increase is no longer used for your walking movement speed, it is instead the distance that you can teleport as part of your movement and can only be used for teleportation.

This will allow you to move away from an enemy without provoking an opportunity attack; in order to do so, it costs all of your teleport speed, and you can only teleport a distance equal to half your teleport speed (rounded down to the nearest 5ft).

Elusive Steps

Starting 3rd level, your ability to bilocate allows you to confuse and mislead enemies, attacking multiple foes across your battlefield

Whenever you use your Flurry of Blows, you can teleport between the attacks a distance equal to your Monk level (rounded to the nearest 5ft).
This teleporting is independent of your teleport speed for movement.

Additionally, whenever you take the Dodge action, you no longer receive attacks with disadvantage. Instead, when you are targeted with an attack, you can use your reaction to teleport using the same constraints as above once the attack has successfully or unsuccessfully landed.
If the attack was a ranged weapon attack, you can use Deflect Missiles as part of the reaction; if you reduce all of the damage and choose to use Deflect Missiles Attack, you can make a melee weapon attack with the missile if you can teleport to within melee range.

Drop Attack

Starting 6th level, you are so nimble that you can use the environment to your advantage in order to get the drop on your enemies.

You gain a climbing speed equal to your Unarmoured Movement Speed increase.

Additionally, if you are able to position yourself above an enemy, when you use your Slow Fall ability, you are able to spend 1 ki point to make an attack with a monk weapon as part of the reaction, positioning yourself directly behind or on top of the enemy.

Shifting Target

Starting 11th level, you are so proficient with shadows and movement that you are able to catch enemies by surprise and cause extra harm to them.

You are able to spend 4 ki points as a free action to cast the spell Blur  that lasts until the start of your next turn. 
For this duration, while your concentration lasts, whenever you successfully attack an enemy, you can add an additional die of damage for each other enemy you have successfully attacked this turn.