Feral Rage

Being descended from a beast, you can enter an animalistic rage when angered. You gain the following effects: 

• Increase your Strength, Dexterity, or Constitution score by 1.
• If you reach less than half of your max hit-points, make a DC 15 Wisdom saving throw. On a fail, you enter a fearsome, beastly rage, causing the following: 
  • You immediately drop any item you're holding.
  • You immediately lose concentration on any spell that you are concentrating on, and you can not cast any new spells.
  • You lose the ability to use regular weaponry, instead using unarmed strikes, which now deal 1d6 + your STR modifier and have an additional +1 to attack rolls.
  • You become immune to being charmed or frightened.
  • You become unable to speak Common, however you can still understand it.
  • You have advantage on Charisma (Intimidation) checks.
  • If you reach 0 hit points, you can make an unarmed attack as a reaction.
  • You can repeat the saving throw at the beginning of each of your turns, ending the rage on a success and making you immune to the effects of rage for 24 hours. The rage also ends if you become unconscious, Greater Restoration is used on you, Calm Emotions is used on you, or the cause of the rage dies or is otherwise destroyed.