A wizard appears with a gambit. You have to fight yourself from 5 years ago. No training, no prep time, in an mma fight. MMA rules. You can win by decision, knockout, or sub. 5 rounds. If you win you’re a billionaire and will live for 150 years. If you lose, you die. You fight a version of yourself that existed today exactly 5 years ago. He’s been given the same challenge.