Well before, starting with the B2's, startin with bakupearl all the way too bakusteel (non-B3), the “rare” bakugan were the new released Special treatments in that set. You would occasionaly find one either in a booster, or one in a starter, (excluding bronze, they just sucked and really were ALWAYS available), and now, with the B3's, the “Rare” bakugan would be up to personal preference. They have bakugan from bakubronze all the way to the newly released B3 bakugan, and vary on special treatment. Also, bakucores arent all that rare, in most shipments, there will be like 8 bakucore, anf than 2 of everything else. So yah, the crystal are more “rare” than core, and heres a little list for ya on all the series, B1season 1-unavailable at retail stores; NOTE, some stores MIGHT get some in weird assortments randomly, so just be watchinseason 2-^^sameB2bakupearl-unavailable at most retailbakuclear-unavailable at most retailbakuswap-unavailable at most retailbakuneon-Occasionaly will find, but rarelybakubronze-Occcasionaly will find at out of date storesbakuglow-Occcasionaly will find at out of date storesbakusteel-availableB3B3S1-availableB3S2-available