The Pokémon TCG Mega Evolution Chaos Rising Elite Trainer Box (ETB) is a collectible card game product manufactured by Nintendo in the United States. This special box set includes standard-sized English cards from the Chaos Rising set, featuring the character Greninja. It also includes booster packs for players to enhance their card collections and compete in the Pokémon Trading Card Game. This Elite Trainer Box is a sought-after item for Pokémon TCG enthusiasts looking to expand their decks and collections with exclusive cards and gameplay features from the Mega Evolution series.