Unbreakable Warrior

Your spirit and determination is unbreakable and is a stronghold for yourself and your allies.

Tenacity

Your tenacity allows you to push beyond what should be capable of most, but you pursue.

Your Second Wind gains these benefits:

• You add your profiency bonus to your Second Wind healing
• Second Wind gives you Temp HP equal to your level + your profiency bonus
• you gain resistance to all damage until your next turn in combat after using Second Wind

Unyielding Strikes

Your weapon strikes become magically empowered gaining the following benefits:

• Your weapon strikes now count as magical to overcome resistance. 
• Your weapon attacks also prevent healing on whoever hit 
• Your weapon attacks never have disadvantage

Relentless spirit

Your spirit becomes relentless so much it starts affecting you and your allies. You gain these benefits:

• Your AC calculation changes to 10 + profiency bonus + Dexterity Modifier + Constitution Modifier
• Your Second Wind now also heals your allies in 15 feet for the amount that you healed
• You become proficient in all saving throws
• You add your constitution modifier to your Second Wind healing
• After using Second Wind you can use your reaction every turn to heal equal to your profiency bonus for 1 minute

Protective Leap

You gain the ability to sense when your allies are in danger. 

As a reaction, you can leap up to your movement speed to an ally that would get hit by an attack. This adds your AC to theirs, as they can still get hit, you are empowering them with your strong force of will. That ally's next attack is done with advantage. You can do this twice per short rest.

If no allies are with you, you may as a bonus action give your self a + 15 to movement speed and advantage all of your weapon strikes this turn. This is only an option if no allies are in range.

In addition your weapon first weapon strike after using Action Surge or using Protective Leap will give the creature you hit a Vulnerability to that damage type

Imperishable Champion

Your spirit has reached peak strength as you now become the Imperishable Champion!

If you fall to 0 Hp, you may instead fall to 1 HP with no action required.

You gain the ability to truly heal as the Unbreakable Warrior that you are! As an action, you can heal to full health, and replenishes all uses of Protective Leap, Action Surge, Second Wind, and Indomitable. You also give vulnerability to any damage type of your choice to any creature within 20 feet of you. 

Protective Leap range doubles and when you land next to your ally you heal them equal to your level.

Your weapon strikes also become empowered at this level. You may add 1d6 damage of the same type as your weapon to all of your weapon strikes. Increases to 3d6 if you are at or below half HP.