Your Strength, Constitution, or Dexterity score increases by 1, up to a maximum of 20.
When you reach under half of your total hit points, you gain advantage on all attack rolls made for one minute or until you gain over half health. You can do this a number of times equal to your proficiency modifier. This ability can only be activated once per initiative. This ability recharges all used after finishing a long rest.
When in combat if an ally goes down you can see you instantly become enraged. You gain the ability to attack double the amount than normal with your melee weapon. The attacks have advantage and critical hit on a 19 or 20. This ability lasts until the ally is stabilized or combat is ended. After this ability ends you get 1 level of exhaustion. This ability recharges after finishing a long rest.