Thirty-six packs of the set that opened the Mega Evolution era, which gives this box a significance the later sets in the run do not have. Two lasting changes arrived here. Item, Pokémon Tool and Stadium cards became eligible for full-art ultra rare treatment for the first time, and Mirror Holofoil variants returned after an absence stretching back to the Black & White series. Both mean there is more worth chasing in a box than the ten Mega Evolution Pokémon ex alone, which is not usually true of an era opener. The main set runs to 132 cards with 188 in total. Mega Gardevoir ex and Mega Lucario ex are the two cards the range's box art was built around, with Mega Venusaur ex and Mega Kangaskhan ex also in the set. Released 26 September 2025.