booster box 25th anniversary 【S8a】25th Collection TCG BOX〔Factory Sealed〕 1 x Sealed Pokemon S8a 25th Anniversary Booster Box includes 16 Japanese booster packs with 5 cards per pack All cards are foil cards Yu-Gi-Oh! 25th Anniversary Spell Ruler

In Magic: The Gathering terms, it's a versatile Izzet instant, letting you choose between drawing two cards, dealing five damage, or destroying an artifact

Dual cards are Digimon cards with the ability to be used as Options instead, otherwise you can simply use them to Digivolve on top of

Set contains 129 base cards + 18 parallel cards (147 total)

Ill have to piece through this some more, but presuming the assumption that canon can be interpreted through TCG, it seems reasonable

Other options include eBay (check seller ratings carefully resealed boxes are common with out-of-print sets), TCG Republic, and Japan-based proxy services