The way of the mountain is a tradition as old as the mountains themselves. Dwelling in secluded monasteries high on mountain peaks and deep in subterranean caverns. They have dedicated themselves to perfecting body and form to become immovable as the mountain. They wield their incredible bulk and stability to take advantage of any situation. A wise practitioner uses the the flow of ki to control and manipulate his foes.Their sturdiness and indomitable spirit makes them stalwart allies and a force to be reckoned with for they're enemies.

Body like stone

 You have sculpted your body so you can use your mass to fight. Starting at 3rd level you have gain the features:

•The unarmed strikes you make can use your Constitution modifier in place of your Strength or Dexterity modifier for the attack and damage rolls.

• As part your unarmored defence you can use your Constitution modifier in place of your Dexterity modifier when determining your unarmored AC.

•You can use your Constitution modifier in place of your Strength modifier when making Strength checks and Strength saving throws.

Roots of the Mountain

At 3rd level you can channel your ki to steel yourself against attack. As an action you can spend 1 ki point to plant yourself in place and gain a number of temporary hit points  equal to your monk level + your Constitution modifier.

When you use your flurry of blows you can replace one of the unarmed strikes with a use of this feature without spending an additional ki point for it's use.

Crushing Grip

At 6th level. You can use your ki to give your grip immense force. If you are grappling a creature you can spend a ki point to deal bludgeoning damage equal to your martial arts die + your strength modifier. You can use this feature once per turn.

Reflex Hold

At 11th level. When an enemy hits you with an attack while you have temporary hit points granted from your roots of the mountain feature you can attempt to grapple the attacking creature as a reaction.

Mountain Stomp

At 17th level. You use your mountainous might to shake the world around you. As an action you can spend 3 ki points and stomp the ground beneath your feet. The ground in a 15-foot radius around you becomes difficult terrain and creatures of your choice in a 15-foot radius must make a strength saving throw. Creatures take 2d10 bludgeoning damage and fall prone on a failed save. On a successful save they don't fall prone and take half damage.

When you use this ability you can expend 1-5 additional ki points to increase the damage of your stomp. For each additional ki point spent each creature within the radius takes an additional 1d10 bludgeoning damage.