BreakTHROUGH Booster PackTwo worlds collide in a new path to power Part of the XY Series, the BREAKthrough expansion introduces the Pokemon BREAK mechanicevolving on top of a Pokemon to boost HP while retaining existing attacks. Released November 4, 2015, this set showcases icons like Mewtwo and Zoroark BREAK across a 160+ card checklist. This factory sealed booster contains 10 randomized Pokemon TCG cards from XYBREAKthrough. Ideal for collectors building the set or players