Two retractable blades that attach to bracers.

As both a Monk Weapon and a Martial Weapon anyone who is proficient in either of those can add their proficiency bonus to the attack roll. Using a charge you can cast Greater Invisibility, and whenever you are invisible you can use a bonus action and a charge to teleport up to 20 ft and make a single attack on a creature within 5 ft of where you teleport to. Whenever you make a critical hit with this weapon, you can add an extra 3d8 to the attack and immediately go invisible if not already, this invisibility lasts until you take an attack action or until one minute has past. 

• Critical Strike: Whenever you make a critical hit with this weapon, you can add an extra 3d8 to the attack and immediately go invisible if not already, this invisibility lasts until you take an attack action or until one minute has past. 
• Invisible Pounce: Whenever you are invisible you can use a bonus action and a charge to teleport up to 20 ft and make a single attack on a creature within 5 ft of where you teleport to. 

Proficiency with a Shortsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: monk, ranger, rogue, or fighter, Damage, Movement, Combat, Handwear, Finesse, Light, Vex