Steam Siege Booster Pack Pokémon TCG

Steam Siege is the name given to the eleventh main expansion of the XY Series of the Pokémon Trading Card Game. In Japan, it was released as the Fever-Burst Fighter and Cruel Traitor dual expansions that make up the fourth and final expansion in the Pokémon Card Game XY BREAK Era.

English expansion was released on August 3, 2016