Thousand Sons, Chaos and the Siege of Terra
Need some help, folks.
I've been trying to create armies that emphasized the Psyker nature of the Thousand Sons, as well as the fact that, from what I've seen of their fluff, they were fairly anti-demon. Magnus, of course, fell to Chaos in order to save his legion, but Ahriman and his Cabal were extremely anti-Chaos; hell, that's why the Rubric was made. This 'loyal' core was eventually banished, and Ahriman put the legion back together in the Exile and Sorcerer novels, so far.
Now, in the Lexicanum site, it mentions that the Sons were part of the Siege... but only those led by Magnus. Were there any 'loyal' Sons? Is Lexicanum out of date (I've been told rather rudely that this is all current because it's part of the Visions of Heresy artwork)?
Or have I finally found a reason to sell my Thousand Sons?