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Experience Japan’s M4 set with the Ninja Spinner Booster Box, starring Mega Greninja ex! Releasing on March 13th, this set features 83 main cards and 35-40 secret rares, totaling around 120 unique cards. At Kelscollectibles, we provide authentic, sealed Pokémon products for fellow enthusiasts. Complete your collection or invest in rare finds with our premium, timely drops. Secure your Ninja Spinner M4 Booster Box today.