Watch the webcamparrot he made a in-depth video on the various abilities of the emperor
I saw a comment that says he should be about the power of the gods in the comics. I don't know whether that is true right now, but I did it this way. I hope those who know more about Warhammer than I do, will accept this. He will grow even more powerful as he practices and gets used to his current power.
"Well it's definitely a cult but I'm not sure which one. Most likely just another rising extremist group against the "Church Of The Machine God". They've popping up in droves ever since that religious summit in Val Nish City. I'll check it out just in case, atleast it will keep me busy."