Ki Blocker

Monks that practice the way of the ki blocker prime their bodies and minds to align with the cosmic energy of the universe. A ki blocker feels ki supernaturally as it flows through every living thing, and can hit pressure points on an opponent to sever that enemy’s connection with its own ki flow. This ability makes ki blockers highly dangerous opponents to benders of any element.

Pressure Points

When you choose this tradition at 3rd level, you begin to learn the secrets of hitting pressure points in your enemies, disabling them. Whenever you hit a creature with one of the attacks granted by your Flurry of Blows, it must make a Constitution save. On a failed save, you can impose one of the following effects on that target, which lasts until the beginning of your next turn.
If you make multiple attacks against the same target, it must make a Constitution saving throw against each successful hit. If it fails multiple saving throws, you can choose one of the following effects for each attack (you cannot choose the same effect more than once).

Attack. If the creature makes an attack roll, it does so with disadvantage.
Forms and Spells. If the creature initiates a bending form or casts a spell that requires its targets to make a saving throw, all targets make the saving throw with advantage.
Saving Throws. Choose one saving throw for the target, it has disadvantage on the roll for the duration

Ki Blocking

By 6th level, you've begun to learn about how to block the ki flow in creatures. When you hit another creature which is not wearing heavy armor with an unarmed attack, you can spend 2 ki points to attempt to ki block it. The target must make a Constitution saving throw. On a failed save, the target suffers the following penalties for a number of rounds equal to your Wisdom modifier:
Ki Pool. If the target has a pool of ki, it is blocked from its ki pool. The target cannot use ki points and has no access to any abilities that require ki.
Spells. If the target casts spells, it loses access to a number of its spell slots that have a combined level that is equal or less than half your Monk level (rounded up) for the duration. None of the removed slots can be of 6th lvl or higher.
Movement. Change the target's movement speed to 5 times their DEX modifier.

Shut Down

At 11th level, you gain the ability to control the ki in another creature's body from a distance. As an action you can spend 3 ki points to force one creature you can see within 40ft to make a Wisdom saving throw. On a failure the creature gains one of the following effects for one minute.  The target can spend their action to make another WIS save to end the effect.
Mute. The creature is unable to speak and may only make limited sounds such as groans and moans.
Clouded Vision. The creature is unable to see for more than 15ft
Deafness. The creature cannot hear any medium levelled sounds past 10ft

Paralysing Strike

Beginning at 17th level, you can strike an opponent's vital spots to put them out of commission. When you hit a creature which is not wearing heavy armor with an unarmed attack, you can spend 3 ki points to attempt a paralyzing strike and the target must succeed on a Constitution save. On a failure the target receives 6d10 nectrotic damage and become paralysed for 1d4 rounds and knocked prone. On a success the target only takes the damage.