If you are strong of mind and body, and able to survive the trek up the Spine of the World, you will have the chance to learn from the Storm Lords followers. This path will either break you or turn you into a creature as powerful as the Mountains.

Strong like the Mountain

You gain proficiency in athletics. When making ability checks you can add double your proficiency bonus with this skill.

Quaking Fist

After an attack roll and before rolling for damage, you can add one martial arts die + your STR modifier (minimum +1) to your damage roll. This additional damage is considered force damage. You can do this a number of times equal to your proficiency bonus per long rest. After using all charges of this feature you can continue to use this ability at the costs of 1 ki point per use.

This attack does double damage to constructs and structures.

Shockwave

Once per turn, as a part of one of your attacks, you can spend at least 1 Ki point to create a shockwave that is either centered on yourself and has a 15 ft radius, or projected at any point within 30 ft of you with a radius of 10 ft. Targets in this area (besides yourself) must make a dexterity saving throw (against your stunning strike DC) or take 2 martial arts dice worth of force damage, and fall prone. If the creature succeeds they take half damage and do not fall prone.

You can use an additional ki point to add an additional martial arts die worth of force damage. After using this ability, the ground within the area of effect becomes difficult terrain. Difficult terrain created in this manner does not impede your movement.

Aftershock

When you hit a creature, and add the additional force damage from Quaking Fist, that creature has disadvantage on their next save against your stunning strike ability.

Will of the Mountain

As an action, you can harness your inner strength, gaining the following benefits for 1 minute:

You can do one additional attack as apart of your attack action.

All your attacks gain the benefit of the Quaking Fist without expending any uses. But you may choose to expend uses to do additional damage, as is written in the Quaking Fist ability.

Your Shockwave ability costs one less ki point, and it expands by 10 ft in radius and now reaches up to 60 ft away from you.

After using this ability you gain 1 point of exhaustion. You can use this ability once per long rest.