When your hit points drop to 0 you refuse to surrender and die, gaining the following effects:

• at the end of every turn you must suceed a DC 13 Constitution saving throw, if you suceed the saving throw you will live until your next turn. if you fail you will die instantly.
• you have an advantage on initiative rolls.
• you have an advantage on Strength and Consitution based saving rolls.
• you have an advantage on saving throws against spells and other magical effects.
•  Your Strength and Constitution scores increase by 4.
• when you hit a creature with a melee weapon attack, it must make a DC 13 Strength saving throw or be knocked prone.
• you cannot move.
• you have an advantage on saving throws against being frightened.