A Paradox Rift Build & Battle box is a pre-constructed deck kit for the Pokémon Trading Card Game that includes a 40-card deck with one of four unique foil promo cards, four Scarlet & Violet—Paradox Rift booster packs, and a code card for the online game.The box allows for a casual or competitive experience by letting players build a 60-card deck to play immediately or enhance their 40-card deck with cards from the booster packs. 
Build & Battle Box contents
40-card ready-to-play deck: This deck is pre-built and includes one of four random foil promo cards (Chi-Yu, Xatu, Iron Bundle, or Aegislash). 
Four Scarlet & Violet—Paradox Rift booster packs: These packs can be opened to add new cards to the pre-constructed deck. 
One code card: A code for the online Pokémon TCG Live game is included. 
Deck building tips: A sheet with building tips and a list of all cards in the set is often included. 
Other items: Some boxes may include a deck box, trainer tips, energy cards, and other supporting cards. 
Build & Battle Stadium contents
The Paradox Rift Build & Battle Stadium is a larger box for two players and contains two individual Build & Battle Boxes, plus extra supplies. 
Two Build & Battle Boxes: Each box contains a 40-card deck with one random promo card and four booster packs.
Additional booster packs: Three more booster packs are included, bringing the total to 11 packs for the two boxes combined.
Basic Energy cards: A large supply of basic energy cards is provided.
Damage counters: Six damage-counter dice are included.
Coin-flip die: A single competition-legal coin-flip die is included.
Condition markers: Two coin condition markers are included.
Storage box: The stadium box itself can be used to store all the items.