Inferno X (Japanese: インフェルノX) is the name given to the second expansion of cards released during the Japanese Pokémon Trading Card Game's MEGA Series. This set features the Mega Evolution Pokémon, Mega Charizard X.
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Inferno X continues to introduce Mega Evolution Pokémon ex into the Pokémon Trading Card Game's MEGA Series, including the central Pokémon, Mega Charizard X ex. The set Inferno X also provides various supporting Pokémon and Trainer cards, notably for the Fire and Darkness types.
Inferno X was released in Japan on September 26, 2025, followed by localized releases in Traditional Chinese on October 9, 2025, and in Korean on November 28, 2025. Each booster pack contains 5 cards. Each booster box contains 30 packs.
For the Traditional Chinese release in Taiwan and Hong Kong, the "10-Pack Set Plus" product is available, which contains 10 booster packs, a cardboard deck case, and a promo card pack. The promo card pack contains one random selection of three sets of Holofoil M-P Promotional Pokémon cards with the Inferno X logo on the artwork, plus 5 Basic Energy cards. The M-P Promo selection are as follows:
The Taiwan and Hong Kong release also introduces the "Inferno X Value Set", a booster box which contains 40 packs instead of the usual 30, a display frame, and a promo pack containing one of the three following Pokémon cards: Mega Charizard X ex, Zacian, and Toxtricity. Each promo pack also contains 5 Holofoil Basic Energy cards matching the Pokémon's type.
Cards released in this set are included in the English Phantasmal Flames expansion.
