User blog comment:Im1azy/THe jist of my chapter so far/@comment-2253300-20131106084427/@comment-3258762-20131106094653

I would also point out that no Space Wolf would lead a new chapter against Tyranids, their fanatic love for their own chapter is too strong for something like that, hence why Russ established the Great Companies.

What they can be founded for is because the Emperor's Tarot predicted that a "Great Gluton" would arrive and thus needed something to counter. This would give reason to create such a chapter during pretty much all foundings, especially after the 36th Millenia and the AoA, when suspicion was high.

The reason I say Great Gluton instead of Devourer is because Gluttony is something that would fit in a Tarot prediction easier, as it can mean just about anything. Turns out the Emperor was talking about the Tyranids.