Well most people will tell you there's no such thing as rare bakugan. That's c**p. Although many of your bakugan could be defined as rare simply because they're b1, and the only thing you will find on the shelf now is B2. But in my opinion the rarest Bakugan you have right now is helios. He's very htf in stores right now.As for cards, many of these are very new and very old, so those HSP cards are very rare and valuable, keep them somewhere safe. But besides the HSPs, your rarest card is the doom card. Not many people have one, so again, try to store your cards somewhere where nothing could happen to them.Hopefully my information helps, and good luck with your collection! ;D