Naruto: Rise of the Hidden World

Upon invoking the Eighth Gate, you are granted godlike strength, adding +8d6 to all unarmed attacks and ensuring that all melee attacks automatically crit for 1 minute. Your movement increases by 60 feet, and you gain 3 reactions per round, but the power comes at a dire cost: you cannot be killed during this turn, yet at the end of your next turn, you die without the possibility of death saves, leaving only resurrection as an option for revival.