Board Thread:Game Discussion/@comment-9236265-20130507170249/@comment-8284783-20130507190054

Actually, according to the event page from the official site (http://transformers-legends.com/events/unleash-the-beast/) I don't think there will be more bonus other than the X2 for R4 decepticons (and raid cards, obviously, since they wanna sell those to make money :P).

So that means no faction bonus and no matching weapon bonus.

What this also means is that you will definitely wanna hang on to your Flamewars and Slipstreams, since those will be your best cards in the event.

Since there's no faction bonus (unless they change the page at last minute; you never know) you would be better off using your reward cards (Firestar, Arcee, Chromia, Elita One) as your "grunts", and Flamewar and Slipstream as your leaders.

Unless you already have some MTM'ed R3s and your rewards have yet to be upgraded at all. An easy to check your best formation would just be to hit "recommend" and then switch around Flamewar and Slipstream to make sure they form your leader row (the ones that get the X3 bonus).