The Start Deck 100 Battle Collection is a starter deck product that contains one random selection from a collection of 102 different decks (100 standard decks, 1 secret deck, and 1 variant of Deck No. 001 that contains a gold-etched Mega Charizard Y ex card). Each deck is identified by a number, as detailed on a separate enclosed card, and typically focuses on between one and three types with at least two Pokémon ex. Each numbered deck contains the same cards, most of which comprise cards from the Scarlet & Violet and Mega Evolution Eras. Several are new to the product, some are reprints with new artwork, and some are reprints from earlier in the Scarlet & Violet Era. Some cards also have Non Holofoil and Mirror Holofoil prints, while some are exclusively Non Holofoil or Mirror Holofoil—these prints are fixed to each deck. All of the cards form a numbered set with a collection number of 742, making it the largest single Japanese collection of cards and the largest individual collection number in any language. A selected number of decks also feature Secret cards such as Full Art prints of debut Mega Evolution Pokémon ex and Trainer cards. Each deck also comes with a basic rules QR code card and sheet of damage counters and status markers.