>Hates psykers, mutants, sorcerers and tyrants >Joins the

>>52227077
Nurgle didn't exactly give him a choice, with the whole "hey Typhus, turn off his Gellar Fields and infect everyone" thing.

>>52227077
Horus and Mortarion were bros, and Mortarion had a grudge against the Emperor for saving him at Barbarus.

>>52227077
literally everyone besides Angron was a psyker, sorcerer or daemon when he turned, although arguably he might not have just thought Kurze was crazy.

Khan even mocks him over the fact that his only 'sane' allies who didn't dabble in the warp were Kurze and Angron. One of which was a Farseer and the other was the Deamons.

>>52227077
It goes further:
>Makes a psyker his right-hand-man
>Tries to turn the biggest pro-psyker amongst still loyal primarchs on his side using anti-psyker rhetorics
>Learns sorcery and daemonology to "fight back against daemons"
>Includes possessed and daemon prince into his retinue
Mory's just the dumbest primarch ever, which is hard to pull when you have to compete with a guy who got part of his brain cut out and the guy who's retunk out of his mind half the time all while being sober and healthy himself.

>>52228776
>retunk
drunk

>>52228164
Mortarion holding a grudge for that shows how weak he was.

Since Demon-Mortarion is going to be in the Triumverate of Chaos, why should we be excited? sell me on Nurgle's Legion

>>52229708
They are fat and stinky just like you

Tzeentch tricking a loyalist into being his daemon Primarch is Tzeentch being Tzeentch, but Nurgle just kinda... Torturing a legion into obeying him seems lame next to Slaanesh and Khorne getting willing converts.

Hell, besides Typhon the arsehole and Mortarion who's daemoned out and is thus bound body and soul to Nurgle, how much do the Death Guard even like being the Nurgle marines?

>>52231311
That's kinda Nurgle's shtick though. He's an abusive father figure or spouse. He treats you like shit to the point where you forget what feeling good was and then convinces you that he actually loves you.

>>52227077
>Does Mortarion have the absolute worst reasons for joining the heresy?
No, that would be Alpharius Omegon.

>this shadowy cabal of xenos are telling us that destroying mankind is the only way to save the galaxy
>they seem like upright chaps, I guess let's believe them

The Emperor collaborated with the Warp and was a psychic entity far above Horus at the time of Mortarion's defection.

I always thought Morty had one of the few good reasons among the traitors for going faggot. He saw what a danger psykers were and saw similarities between the Emperor and the warlords on Barberas, and the Emperor did as well because he planned on offing the navigators and astro paths once the Webway was secure.