XY Steam Siege Booster Pack

The set will focus on the aftermath of the siege of Gear Palace by Shiny Mega Gardevoir-EX, with Mythical Steam Pokemon Volcanion trying to stop them. In addition, Xerneas and Yveltai are just a few of many Pokemon getting a BREAK Evolution. The set includes 110 cards, 8 new dual-type Pokemon, 6 new Pokemon-EX (including two Mega Evolution Pokemon), and 7 new Pokemon BREAK.