Talk:Brawl Mode/@comment-186.45.35.219-20160811015827/@comment-28973748-20160818073616

as mentioned in another comment, I got catastrophic quaken from a stage 5 blue pack (8 hours).

It's apparantly just a very low chance, and to level them up, it will take more champion tokens which are equally low chance. Yet another scheme to make you spend runes :)