Board Thread:Warhammer 40k General Discussion/@comment-25686730-20141212030710/@comment-28917471-20141213154656

That's a good theory... Ahriman tries to find the Black Library in order to give Magnus a chance to overthrow Tzeentch...

But there is one flaw with that theory, and that is Magnus hates Ahriman. He even tried to kill him when Ahriman has conducted the Rubric, yet he was spared by Tzeentch...