Shadowborn

Rogue's who manipulate the very shadows themselves to their will, using the essence of the darkness they hide in to make themselves impossibly fast and deadly.

Shadow Deep

Starting at 3rd level when you choose this archetype, you can submerge yourself into your own shadow and reappear from another shadow. Instead of moving somewhere, you can choose to teleport to a distance up to your remaining feet of movement. This movement does not provoke attacks of opportunity. You must teleport within 5 feet of an object or a creature that can cast a shadow. The range is not affected by the use of Dash and you must be able to see your target.
After the teleport is complete, your next attack until the end of your turn is a sneak attack if you have not already made a sneak attack this turn.
You can use Shadow Deep a number of times equal to your proficiency bonus per encounter.

Shadowborn

Additionally, at 3rd level you gain 60 ft of Darkvision. If you already have Darkvision, the distance is doubled.

Pocket's of the Shade

Starting at 9th level, you have the ability to store and summon things from five pocket dimensions. As a bonus action you can store or retrieve an item to one of the five dimensions. Only one item fits every pocket no matter how small it may be. Four of the pocket dimensions are small in size and can only fit one object that is not bigger than 2x2 feet. The fifth pocket dimension is larger and can fit up to a Medium creature. There is no oxygen in the pocket dimensions.

Arms of Ink

Also at level 9, during your turn, you can increase your melee weapon attack range by 10 feet until the end of your turn.

Dark Betrayer

At 13th level, you can use your bonus action or your reaction to turn a creature's shadow against it within 30 feet of you. When used as a bonus action, you have advantage on your attacks against the creature until the end of your turn. When used as a reaction, an attacking enemy has disadvantage on their attack rolls until the end of their turn. You can use Dark Betrayer once as a bonus action and twice as a reaction per encounter.

Umbraspawn

Starting at 17th level, instead of Uncanny Dodge you can use Shadow Deep and avoid all of the damage. Doing so, reduces your feet of movement by the distance you teleported until the end of your next turn.