Configuration: 36 packs per box. 10 cards per pack.
- Over 110 cards
- 8 new dual-type Pokemon, many of them Shiny
- 6 new Pokemon-EX, including two Mega Evolution Pokemon
- 7 new Pokemon BREAK
Long years of stability come to an end when Shiny Mega Gardevoir-EX lays siege to the mighty Gear Palace with a host of greedy forces. The Mythical Steam Pokemon Volcanion must wield the dual powers of fire and water to stop them! As the battle rages, Xerneas BREAK and Yveltal BREAK face off in the Pokemon TCG: XY-Steam Siege expansion!