Nightstalker

Nightstalkers are dedicated spies, saboteurs, and assassins, trained in ancient techniques that strain the limits of physical ability and verge on the supernatural. You gain the following benefits:

• Your Dexterity or Wisdom score increases by 1, to a maximum of 20.
• You may deal Sneak Attack damage when making attacks using unarmed strikes or adept weapons. 
• You gain a bonus equal to your Wisdom modifier on Acrobatics, Deception, and Stealth checks.

  In addition, you gain the following special focus feature:

Twilight Vanish. Nightstalkers can move with such swiftness that it takes a trained eye to see the motion at all. On your turn you can use a reaction and spend 2 exertion to move up to 30 feet with such incredible speed that you seem to disappear, and after moving this way may immediately take the Hide action.