Level 3: Ironbound Soul

Your will reinforces your body beyond mortal limits. While raging you gain the following benefits:

• you gain temporary hit points equal to your Barbarian level + your Constitution modifier
• If you are forced to make a saving throw, you can use your Constitution modifier instead of the normal ability modifier
• You gain advantage on willpower saves

Level 6: Unyielding Form

While you are Raging, you gain resistance to all damage except Force, Necrotic, Psychic, and Radiant damage, and you are immune to the charmed and frightened conditions.

Level 10: Defy the Inevitable

When you or a creature you can see within 30 feet of you fails a saving throw or is hit by an attack roll, you can use your reaction to force a reroll of that d20. The new roll must be used.

You can use this feature a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.

Level 14: Unbroken Will

While you are Raging, you gain the following benefits:

• when you, or an ally within 10ft of you are attacked you may use a reaction to prevent all damage taken (can be done once per long rest)
• You double your proficiency when making a willpower save
• If you are reduced to 0 hit points while Raging, you can choose to drop to 1 hit point instead.
  Once you use this benefit, you can’t use it again until you finish a long rest.