So, what would have happened in Russ was never found? As in the

>>50862470
No, IIRC the T-sons had somegenetic abnormality that made them all mutate, so Magnus essentially sold all of their souls to Tzeentch to save them, otherwise they would have been purged and expunged for being mutants.

If it wasn't Russ, it would have been someone else.

>>50862665
They actually only THOUGHT it was genetic: the truth was the Flesh Change was being caused by all the excessive overflow from the TSons drinking from the fountain of the warp like it was a fucking firehose and backing up into their shit.

>>50864615
Malcador said that the Flesh Change is an issie with the TS geneseed. Using sorcery only made it worse.

See the "Last Son of Prosporo".

>>50864652
>create a psychic Primarch who will be the genefather of a legion of psykers
>cause them to horribly mutate if they use psychic powers

AncientEmperors.jpg

>>50865386
I don't think the Emperor planned on keeping the Thousand Sons around forever anyway, he was probably just going to sit Magnus on the Golden Throne as soon as he was ready.