Paramount War Booster Box EV Calculator

Best Evidence — Japanese collation proxy

Evidence

This calculator is based on Best Evidence — Japanese collation proxy reviewed September 3, 2026.

Sources

• Paramount War [OP-02] official English product page - Bandai Co., Ltd. (accessed 2026-09-03)
• TCGCSV category 68 group 17698, sealed product 455866 - TCGCSV (accessed 2026-09-03) — identity and pricing were imported into local generated artifacts; the calculator does not call the raw endpoint.
• Best Evidence — Japanese collation proxy and ordinary-pool classification - The Expected Value (accessed 2026-09-03)
• OP-02 English Revision Pack contents and box inclusion - One Piece Player (accessed 2026-09-03)
• OP-02 English booster wrapper contents - OnePiece-CardGame.it (accessed 2026-09-03)
• Japanese OP-02 box inclusion pattern - Toreca Begin (accessed 2026-09-03)
• English OP-02 single-box high-rarity breakdown - Reddit community observation (accessed 2026-09-03)

Limitations

• collation.cardsPerPack and collation.packsPerProduct: the product uses 12 cards per pack and 24 packs per English booster box; those physical wrapper counts do not establish rarity-slot probabilities.
• collation.caseStructure: box-level hit counts and display/case correlations are unresolved for the exact English North America printing.
• evidence.sample: null because no reviewed observation provides a complete, attributable sample with exact unit, size, method, North America printing, and observation interval.
• pricing.coverage: exact TCGCSV identity is known, but modeled row and expected-mass coverage have not been measured.
• Modeling policy approved 2026-09-03: every supported ordinary card in the same slot, rarity, treatment, and finish pool receives one equal positive selection weight. This is a transparent modeling assumption where the publisher or empirical sample gives pool odds but not card-level sheet weights.
• Best Evidence — Japanese collation proxy: exact English wrapper and card-price identities are combined with an owner-approved Japanese-product collation proxy because a complete English rate ledger is not published. This is an estimate, not a factory guarantee.
• Only booster-pack slot counts and rarity probabilities are proxied. Card identities, treatments, TCGplayer Low prices, sealed-product identity, language, region, release date, and any explicitly modeled fixed bonus come from the exact English release.
• The proxy is first-order and product-family-specific. No display or case correlation is inherited, and no target is used as a donor for another target.
• Within each retained English rarity/treatment pool, exact positively priced card SKUs use equal positive weight where publisher sheet weights are unavailable.
• Per 24-pack box proxy: 168 Common, 64 Uncommon, 39 Rare, 8 Leader, 7 Super Rare, and 2 retained Secret Rare cards. This is represented as 7 Common, 2 Uncommon, 1 guaranteed Rare, one Uncommon-or-Leader slot weighted 16/24 Uncommon and 8/24 Leader, and one Rare-or-higher slot weighted 15/24 Rare, 7/24 Super Rare, and 2/24 Secret Rare. It preserves exactly 12 game-card positions per pack.
• Replace this proxy when a complete, attributable English collation ledger or publisher rate table becomes available for the exact release.
• The exact English OP-02 box contains 24 boosters. Product listings distinguish 12 game cards from one separate DON!! index card, so the box has 288 game-card positions and 24 DON!! index positions before box-only bonuses. Embedded pack EV includes all 13 physical items while labeling the wrapper precisely as 12 game cards plus one DON!! index card.
• The best-evidence retained box ledger is 168 Common, 64 Uncommon, 39 Rare, 8 Leader, 7 Super Rare, and 2 Secret Rare cards. The reviewed English one-box breakdown directly reports 39 Rare, 8 regular Leader, 7 Super Rare, and two premium hits; the 24-pack arithmetic and Japanese OP-02 pattern supply the disclosed Common/Uncommon split. The two unsupported alternate-art hit positions are conditioned onto the exact regular-art Secret Rare pool before drawing, so this is a no-chase marginal estimate rather than a raw-box guarantee.
• The reviewed Japanese OP-02 box pattern supplies one parallel DON!! card per box. This proxy therefore models the exact English OP-02 normal and Manga DON!! TCGplayer identities as 23 normal index cards plus one parallel index card; the parallel count is a Japanese-product proxy, not an English factory guarantee.
• Bandai states that every English OP-02 booster box includes one randomly selected Box Topper from six types. The six exact English Box Topper SKUs receive equal positive weight because no unequal selection weights are published.
• English OP-02 boxes also include one seven-card Revision Pack drawn from 33 exact English nonfoil corrected Starter Deck SKUs. The available evidence reports five predetermined seven-card configurations but does not publish their contents or relative frequency, so the calculator uses seven independent equal-weight draws only as a transparent marginal-EV approximation; it does not claim physical duplicate behavior or Revision Pack variance.
• The displayed box contains 320 modeled physical cards: 288 booster game cards, 24 DON!! index cards, one Box Topper, and seven Revision Pack cards. Box EV includes all 320 cards; embedded pack EV includes 12 game cards plus one DON!! index card and excludes only the eight box-only bonus cards.
• No-chase redraw policy approved 2026-09-03: Curio, Enchanted, alternate-art, parallel, showcase, serialized, signature, premium-rarity, promotional, and any other card or treatment without a supported pull rate are excluded. A chase hit is redrawn from the applicable supported ordinary pool, so excluded cards occupy no modeled outcome.
• Simulation ordering is draw the complete disclosed no-chase product first, record that draw, and only then apply Sift or another user filter. Sift never changes or backfills the completed modeled draw.