Focus: It is an end-of-year reprint and collector-focused set centered around powerful Mega Evolution Pokémon ex cards.
Featured Pokémon: The set will be headlined by Mega Dragonite ex, and also features other Mega Evolution Pokémon like Mega Charizard X ex, Mega Lucario ex, and Mega Gardevoir ex.
New Rarity: It introduces a new "Mega Attack Rare" (MA) rarity, which are full-art cards rendered in a pop art style with the card's main attack name displayed in large text across the foreground.
Format: As a "High Class Pack," each booster pack contains 10 cards (more than the usual 5 or 6) with a guaranteed hit (a high-rarity card) in every pack, making it a premium release aimed at collectors.