I Have an Omniscient Mirror

Behemoths of the galaxy devour planets, higher life forms tear the universe apart with a single wave of their hand, and the most powerful races claim everything they see as their territory. Su Yuan, having traveled through time, gazed upon the all-knowing, answering-every-question magic mirror before him, lost in thought. Omniscience equals omnipotence. ...Years later. "Throughout history, from ancient times to the present, who is the most powerful life form?" Su Yuan asked, looking into the magic mirror before him. "It's you, great master!"