Twilight Masquerade is a Pokémon TCG expansion best known for introducing the ACE SPEC mechanic — ultra-powerful cards that are limited to just one per deck, adding a new deckbuilding constraint to competitive play. The set is themed around Ogerpon and its mask-changing forms, alongside a cast of masquerade- and festival-inspired Pokémon. Its ACE SPEC cards, including fan-favourites like Amulet of Hope and Prime Catcher, quickly became staples across multiple Standard archetypes. Shop Twilight Masquerade booster packs, boxes, and Elite Trainer Boxes, or search singles for Ogerpon ex and every ACE SPEC card from this set.