And it seems increasingly obvious that The Emperor is going to defeat Horus very easily.
Horus has confided in Mortarion that he isn't sure he can defeat The Emperor. TBiS ends with the image of an eagle tearing out the throat of a serpent. Horus was effectively defeated in single combat by Russ. I can't remember precisely, but I recall that either Russ or the Khan think Sanguinius could do the job alone, which hardly bodes well for Horus if he has to go two rounds.
This obviously leads us to the question of how The Emperor ends up incarcerated, and I suspect something similar has happened before. A small handful of characters have suggested that He was awoken, perhaps accidentally, rather than deliberately unveiling Himself - it's also been mooted that He may be a relatively recent creation, though this is contradicted by the POV of the young Emperor in Master of Mankind. We know that Perpetuals can be incapacitated, but only through the use of a weapon as powerful as an Anathame.
Are there any ancient Perpetuals in 30k with intimate knowledge of Anathames, who might have Pious worldviews at odds with The Emperor's? Someone presently journeying towards Terra?
I think we're being set up for the ultimate perversion of the ascension myth. What a conclusion it would be if Oll defeated The Emperor.
Has anyone else noticed this? How Horus is being de-hyped? Really interested to hear how everyone else think the endgame might play out.