This gift box was conceived to celebrate the Japanese release of Pokémon Emerald, released 2 months prior to the box. It focuses on Deoxys and Rayquaza, a nod to their heightened roles in the game (Rayquaza is featured more in the storyline, and Deoxys gained a new version-exclusive forme). Similarly themed half decks were also released alongside Clash of the Blue Sky.
In addition to the half decks, the set contains a rulebook, damage counters, generic counters, a custom coin and 2 playmats.
The same tin was used for the English EX Collector's Carry Tin, which contained 3 EX booster packs and two promotional cards.