Way of the Unseen Blade [Remastered]

The Way of the Unseen Blade was passed down among "cowards"; the essence of its style lies in "surprise attacks". Because of this, it is unsuited for those aware of its techniques. The style is not meant for sport or fair fights, but rather for survival in incredibly dangerous situations and times. Created by peasants and farmers, passed down from generation to generation as the peasantry hone their secret craft.

Phantasmal Weapon

By level 3, your training of both armed and unarmed combat transcends physicality, allowing you to emulate weapon combat while empty-handed.

Choose one bladed martial melee weapon that lacks the heavy or special property to be your unseen blade.
You gain proficiency with the chosen weapon if you don't already have it, and it is considered a monk weapon for you.
While unarmed, you gain the magical bonuses and effects of your chosen weapon, you can also sheathe it and unsheathe it without expending any action. 
Unarmed attacks you make deal the same damage die and damage type as the chosen weapon unless you choose to use your martial art die instead, in which case the attack deals damage equal to your basic unarmed strike. If your Phantasmal Weapon is a versatile weapon, you roll the higher die.

By 17th level, you can choose an additional weapon to be your Phantasmal Weapon, and unarmed strikes made with your Phantasmal Weapons count as light weapon attacks, for the purposes of maneuvers, feats, and dual-wielding.

Smuggling Mastery.

You've been taught to keep your weapons and items on you hidden well.

You may now add your Wisdom Modifier to all Sleight of Hand and Disguise checks.

Swift Strike

Starting at level 6, your deceptively fast attacks aided by your mind-numbing ki allow you to strike in a way the target will never see coming.

At the start of your turn you may choose to attack unnoticed.
You gain a passive Stealth and Sleight of Hand of 10 + Modifiers.

All creatures with a lower passive perception than either your Stealth or Sleight of Hand passives fail to perceive your attacks until the start of your next turn, as you attack swiftly and quickly, but your weapons seem to remain sheathed, and your hands are by your sides. Additionally, you can spend 1 ki point to gain advantage on your attack rolls to all attacks during that turn without expending any actions.

 

Masterful Precision.

When subjected to both instances of advantage and disadvantage for an attack roll, you instead roll with advantage.

Delayed Death

At 11th level, The precision of your strikes becomes wholly unparalleled, allowing you to strike in such a way that your target doesn't realize they've been cut until long after the fact.

You can spend 1 ki point at the beginning of your turn to accumulate the damage of your melee attacks as you hit your target, and unleash it upon them at any point (No action required) determined by your (Monk level * 4) minutes.
Every turn that passes after the first time you use this ability allows you to roll 2 additional martial arts die per attack until you unleash the damage onto the enemy. This does not accumulate to more than 2 dice.

Upon using this ability, your targets do not realize they are being attacked, nor can they feel your attacks until your 5th strike. Once you have struck them for the 5th time, they'll be aware of the fact that they are being attacked. Though they will feel no pain and take no damage until it is accumulated and unleashed. 

 

Master of the Unseen Blade

At 17th level, You can spend 4 ki points at the start of your turn to enter a state of unfathomable speed and precision. For the next minute, all your attacks land on your opponents unerringly, as you move so quickly you can't be dodged, and your weapons can bifurcate any material. Your movement speed is doubled, you gain a +2 to your AC, you have advantage on Dexterity saving throws, and you gain an extra action once on each of your turns. (This action can be used only to take the Attack (one weapon attack only), Dash, Disengage, Hide, or Use an Object action). You cannot gain the abilities of the Haste spell while under these effects.

in addition, you can now bond with one more Phantasmal Weapon, for a total of 2.

 

Innocuous Figure.

You can now hide as a bonus action.
Only few have ever seen your strikes. if any. You are never considered the most dangerous person in any room.
(This means that your Dungeon Master can have you be the main target of attacking monsters due to how weak you seem, or be completely ignored, due to how weak you seem.)