We also know what the deal was the warmaster made the same deal though he bargained to get it whereas the emperor took it by force.
Emperor siding with chaos.
Chaos exists only to feed itself and feeding itself requires humanity to suffer.
It then says that the emperor made a deal with the chaos gods who gave him psychic powers that his has today.
Chaos is not pro human and i am.
Humanoid war engines that tower over their foes each chaos knight carries an army s worth of firepower upon its weaponised limbs and hulking carapace.
The answer is simple.
I would side with the emperor just as i would always side with the imperials in any conflict in 40k.
So i was watching an ach warhammer video about chaos lore and one statement he made has stuck with me for a bit.
Malcador and the emperor play many games of regicide and through them various plays are made with the pieces primarchs chaos corruption resistance to stay loyal resulting in various outcomes.
How the emperor got his powers.
In the book vengeful spirit page 331 it says the emperor got his powers because he traveled to the planet molech and entered a warp gate to speak with the chaos gods.
Plus the deal isn t just known by chaos the perpetual alivia sureka who was asked by the emperor to seal the cave on molech after the emperor took the powers also corroborates the story.
The chaos knights also known as renegade knights daemon knights and the questor traitoris in high gothic are imperial knight combat walkers their fallen noble pilots and knight houses corrupted to the service of chaos.