Way of the Unwavering Body (Playtest)

This tradition, practiced mostly in monasteries in the far North or at mountaintop peaks, is focused on having full and complete mastery over one's self and kinesthetics. Their techniques revolve around their hardened body and exploiting the weaknesses of others.

Weighted Style

Starting when you choose this tradition at 3rd level, you can use your endurance and stamina to block attacks.  This allows you to use your Constitution modifier instead of your Wisdom modifier for your Unarmored Defense. You also can use your weight to make your most brutal strikes more often allowing you to deal critical damage on 19-20.

Resolute Soul

Starting at 6th level, you have trained yourself how to take attacks unerringly. You may spend 2 ki as a reaction when a creature hits you with an attack. Using this reaction gives you resistance to the given damage type. At this level you may also use your Constitution modifier for you Ki save DC.

Uncompromising Grasp

Starting at 11th level, you have trained yourself to grapple opponents even the slipperiest opponents. You may use your Attack action to make a creature make a Grapple Check against your Constitution (Athletics) Saving Throw. If you’re able to make multiple attacks with the Attack action, this Attack replaces one of them. While you have opponents grappled you may spend 3 Ki to slam them into the ground with all your might, causing them to take Your Martial Arts Die + Con + Dex. After the slam they are released to the closest 5' space.

Stance of the Hyporean Fury

Starting at 17th level, you have mastered your body so far that you can enter an unstoppable fury for a short period of time. You may spend 7 Ki to enter this stance for 1 minute. In this stance, you no force other than your own can push you. You are also resistant to all damage, and immune to being grappled. In this stance, and you may add your Constitution modifier to your attack and damage rolls.