Teachers and advisers, these monks are often more at home in a library or monastery than on the battlefield, but that doesn't mean they can't survive and help when battles do arise. Giving advice similar to a Bard's Inspiration, their Ki helps their allies as much as it does themself.

Insightful Strikes

Starting at 3rd level when you take this subclass, you may use Wisdom instead of Dexterity or Strength for your attack and damage rolls with unarmed strikes and monk weapons. You may not do this while wearing armour of any kind.

Sensei's Advice

Starting at 3rd level, you may use 1 Ki point as a Bonus Action to give advice to an ally within 60 feet that you can see and can hear you. That ally gains 1d4 that they may use on any one Attack Roll, Ability Check, or Saving Throw they make within 1 minute. This die increases to 1d6 at 11th level, and to 1d8 at 17th level. They may use this Advice after the roll is made, but before the results are announced.
If an ally uses your advice to make an Attack Roll and hits, and you make an Attack Roll against the same enemy before the ally's next turn, you gain advantage on the attack roll. Similarly, if you make an Attack Roll that hits and your ally uses your Advice to make an Attack Roll against the same enemy before your next turn, they gain advantage on the attack roll. Either you or your ally may gain this advantage on only one Attack Roll per turn.

Wise Rest

Starting at 6th level, when the Sensei or one of their allies within 30 feet uses hit dice to restore health during a short rest, they may roll an extra 1d4 and regain that many extra hit points. The die changes to 1d6 at 14th level, and to 1d8 at 20th level.

Bettering Oneself

Starting at 11th level, at the end of a Short or Long Rest, you may spend 1 minute meditating in order to gain the effects of the Bless spell on yourself for 1 hour.

Protective Advice

Starting at 17th level, as a reaction when an ally you can see within 30 feet is targeted by an effect that allows for a Saving Throw, you may spend 3 Ki points to give them Advantage on the Saving Throw.