Monks of the Way of the Unbroken are the ultimate masters of their bodies. They learn techniques to harden their physical forms and control and manipulate their cells to take the most brutal punishment without breaking. 

The Toughest

You have unlocked the secret to hidden reserves of vitality.

Your hit point maximum increases by 4 plus your constitution modifier. Whenever you gain a level after, your hit point maximum increases by an additional 2 hit points.

Thicker Rather Than Quicker

Use your constitution modifier in place of your dexterity modifier for your Unarmored Defense.

Patience Channeled

When you use ki points to take patient defense you can spend an additional ki point to taunt a single creature. The creature must make succeed a CHA saving throw or have disadvantage on attack rolls made against anyone but you until the beginning of your next turn.

Internal Redirection

You have learned techniques to absorb all but the most devastating of blows and channel the energy outward.

As a reaction, you can reduce the damage you take from a melee attack by 1d8 + constitution modifier + proficiency modifier. If you reduce the damage to 0, you can spend 1 ki point to make an unarmed strike. The damage reduction increases to 1d10 at level 12 and 1d12 at level 17.

Mind Over Matter

Hyperactivate your body's natural healing ability.

At the start of each of your turns, you regain hit points equal to 1 + your wisdom modifier if you have at least 1 hit point and no more than half of your hit points left.

Form of Immortality

You have tapped into forces of vitality inconceivable my mere mortals.

Your constitution score increases by 2, maximum score increased to 22. As an action you can spend 5 ki point to gain immunity to any single damage type for 1 minute. Only 1 damage immunity can be active at a time.