‘Thunderclap Spark’ Booster Box Image! By: Water Pokémon Master Posted 2 months ago to TCG 11 comments We now have the booster box image for SM7a Thunderclap Spark! The box reveals that Victini, Litleo, Pyroar, and Tapu Koko will be in the set. Thunderclap Spark will release in Japan on July 6th. For more information about the set, check out this news story.