Pokemon XY Base Set Booster BoxFactory Sealed Booster Box, containing 36 Packs (each containing 10 Pokemon cards and code card) XY is the name given to the first expansion of the XY Series of the Pokmon Trading Card Game. Collection X and Collection Y are the names given to the two subsets that make up the first expansion block in the Pokmon Card Game XY era and is based on Pokmon X and Y. Both releases are the first main expansions to feature the Fairy type and the incorporation