Sun Wukong, himself one of the best monks in his era, has taken a high interest in you for one reason or another. That old goofball. Mayhaps it's your foolish, heavily silly nature, or your possible honorable courageous spirit. Either way the Monkey King has taken interest in you, and is willing to teach you his ways of Monastic Mischief.

Monkey's Wage

At 3rd level, channel 2 of your ki points to morph your limb (arm, leg, other non-humanoid appendages) into either a size one larger than your own, morphing a leg into better shape for running, or into having an extra of that appendage below the original for two turns. It can be used once per short rest.

• If it morphs the arms, that's a +3 modifier to strength checks, and saving throws until it wears off.
• If it morphs the legs, that's a temporary 10 ft. boost to speed.

At 10th level, channel 4 of your ki points to morph your whole shape to be a size larger, and beefier than your own, or morphing your shape into something smaller to move faster and more nimble but at the cost of strength, and a temporary decrease to AC. This lasts for three turns.

• If it morphs the whole body size, and shape to a size one above: a +5 modifier to things relating to strength and constitution, but a temporary 10 ft. decrease to speed.
• If it morphs the whole body size and shape to a size below: a +5 modifier to things relating to dexterity and +3 to perception checks only and a 15 ft. increase to speed, but a temporary 2 decrease to AC.

Ryui Jingu Bang

Starting when you choose this tradition at 3rd level, you can manipulate your given quarterstaff with your own mastery of your ki, just like your mentor Sun Wukong huh? It lasts right up until you use all your ki points.

• 1 ki point extend the quarterstaff to give 5 extra reach.
• 2 ki points extend the quarterstaff to give it 10 extra reach.
• 3 ki points extend the quarterstaff to give it 15 extra reach.

1,000 Hairs

At 6th level, you gain the ability to spend 2 ki points as an action to create an illusion of yourself within an unoccupied space that you can see within 30 feet. If an illusion is out, you can spend another 1 ki point and teleport to it as a reaction when being attacked, you must declare the teleport before knowing whether the attack will hit or not. When either the illusion is struck, or when concentration is lost, the illusion will dissipate into a puff of cloud-like smoke. 

You can have 1 illusion at Lv. 6, 3 at Lv. 10, and 5 at  Lv. 14.

Spirit Walker

Beginning at 11th level, you can enter a special meditation to transport your spirit to the Ethereal Plane, bringing a few items or equipment of your choice from your physical form. When within the Ethereal Plane, you cannot see, speak to but you can faintly hear any creatures on the Material Plane whether friendly or enemy. You cannot interact with the Material Plane, and you are able to pass through others for 1 minute. If still on the Ethereal Plane at the start of your next turn you automatically transport to any unoccupied space of your choice up to 10 feet away. It can be dismissed as a bonus action.

At 14th level, he can bring two other beings to the Ethereal Plane along with you.

Cloud Jumper

At 17th level, you gain a bonus action to spend 4 ki points to summon a cloud beneath your feet. This cloud has a flying speed of 60 feet, and has 25 HP. This cloud can be dispersed using a bonus action. The cloud lasts for up to 1 hour, you can also hide in this cloud. You can use 1 ki point to extend the cloud's average of 5 ft to 10 ft, then use another ki point to extend it 15 ft. This is up to a maximum of 25 ft.