So I am very familiar with the backstory for the Warhammer 40,000 universe and the so-called Emperor of Mankind. I know that the great Shamans of Earth sacrificed their lives and their powers to create him, and I know that he stood up to Horus who wielded the combined might of all four Chaos gods. What I don't know is whether or not their are any actual feats to qualify exactly how powerful he is. Would anyone have any insights into this?