Way of the iron temple

Soul of Steel

Most monks practice agility, reflex, and prefer to avoid damage entirely. Way of the iron temple monks escribe to a different sort of defense, they train their bodies to soak up hits that would knock other monks down, and they use their strength to deflect even the mightiest of blows.

The Temple

Starting at 3rd level, your relentless training has hardened your body against damage. You can use your constitution, rather than your dexterity, when calculating your unarmored defense. In addition, you can focus your ki into your body to bolster your own resolve. As a bonus action, you can grant yourself temporary hitpoints. You gain 5 temporary hitpoints for each ki spent, and the maximum amount of ki you can spend on this ability equals half your monk level.

Deflect Blows

Starting at 6th level, you can stop the axe of an orc or the claw of an owlbear like its nothing. When you are hit by a melee weapon attack, you can use your reaction to reduce the damage you take by 1d10 + your strength modifier + your monk level. If this reduces the damage to 0, you can make one unarmed strike against the attacker.

Unbreakable

Starting at 11th level, your body's constitution is unbreakable. When you are forced to make a constitution saving throw, you can immeditely spend 2 ki points to give yourself advantage on the save, and if you succeed against a damaging effect that would cause you to take half damage on a success, you instead only take half damage if you fail, and none if you succeed.

Iron soul

Starting at 17th level, your ability to shrug off damage reaches inhuman heights. While you are benefitting from your unarmored defense ability, all bludgeoning, piercing, and slashing damage you take is reduced by an amount equal to double your constitution modifier.