The Boundaries Crossed expansion, released in 2012, marks a turning point in the Black & White series of the Pokémon trading card game. This seventh expansion of the series introduces major innovations that have redefined the gaming experience. Among the 302 cards in this collection, there are new Pokémon-EX such as Landorus, Cresselia and Celebi, as well as Keldeo in its two forms. The expansion also stands out for the introduction of ACE SPEC Trainer cards, powerful objects limited to one per deck, recognizable by their border and their holographic illustration. Collectors will appreciate the new forms of Pokémon, including the Therian forms of Landorus and the variants of Kyurem (Black Kyurem and White Kyurem). Boundaries Crossed not only enriched the competitive game, but also offered unique pieces to collectors, making this expansion an important milestone in the history of Pokémon cards.