A Time Leaper monk can manipulate time unwillingly. They generaly cannot control their powers completely at will, but know some knacks on how to attain some of the bennefits.

Rewind

Starting when you choose this tradition at 3rd level, you can bend time on near death situations. When you get to 0 or fewer hit points, instead of falling unconscious, you recover an ammount of hit points equal to 4 times your monk level and teleport 30ft without provoking oportunity attacks. Also, you regain all expended ki points. You can use this feature once per long rest.

At 15th level, this feature can be used twice instead.

Peek a Future

Beginning at 6th level, you can foresee an image of the future of any creature or object. Anytime you touch a creature or object, you can spend 1 ki point to see 1d4+1 static images that reveals parts of the next 24 hours surrounding the object or creature you touched. The images are not necessarily from their own perspective and they remain clear in your head for the next 48 hours. The DM may decide if there is or not any usefull image accordingly to his or her own judgment, if no image is displayed, you don't spend your ki points.

Temporal Protection

At 11th level, you gain the ability to sustain damage. Whenever you take damage from an attack, you can use your reaction and spend 3 ki points to reduce the damage you take by a value equal to five times your wisdom modifier.

You cannot reduce the damage of an attack to fewer than 1 point of damage with this feature.

Time Manipulation

At 17th level, you attain mastery over your time bending powers. Once per long rest, you can cast the 9th level spell Time Stop. You can also do so by spending 9 ki points.