I have an all-knowing mirror

Star-sea behemoths feed on planets, advanced life forms tear the universe apart with a wave of their hands, and the most powerful races have territory wherever their eyes fall.
Su Yuan, having traveled through time, looked at the all-knowing and all-answering magic mirror before him and fell into deep thought.
Omniscience is omnipotence.
......
after many years.
Throughout history, across the vast annals of time, who has been the strongest life form?
Su Yuan looked at the magic mirror in front of him and asked.
"It is you, my great master!"

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