Japanese Cruel Traitor GX XY11 Booster Box

Step into Steam Siege with the Cruel Traitor Booster Box

This official Japanese release launched in June 2016, featuring the XY11 "Cruel Traitor" mini‑expansion tied to Pokémon Centers and select Japanese retailers. A sealed box offers access to rare full art and EX cards from the Steam Siege subset.

What’s inside:

• 20 Japanese booster packs of XY11 “Cruel Traitor” (Steam Siege subset)
• Each pack contains 5 randomized cards (common through rare), including occasional EX, SR, or ultra‑rare full‑art designs

Released only in Japan in mid‑2016, each sealed box contains 20 packs and is prized by collectors chasing Gardevoir EX, Mega Gardevoir EX, Magearna EX, and other Steam Siege-era cards. :contentReference[oaicite:1]{index=1}