Master of Reincarnation

Pheonix was a genius and blessed by the gods but he never found something he wanted to do he asked the gods or a chance to be reborn but he still could not find what he wanted and it took him until he reached more than 12,000 reincarnations and asked finally he yelled I will do anything let me die or give me a challenge that can fill my lifeless eyes so he was asked "would you think you could defeat the hardest challenge of all and defeat the most powerful people in the world" and all he said was "as long as its not too easy."