one piece card game two legends op 08 booster box BANDAI OP-08 TCG JAPAN black Tony Tony.Chopper Bandai | One Piece Booster

Outside of Slivers though

Every Japanese standard booster box guarantees at least one SR or better card, supported by Japanese consumer protection regulations around randomized products

Hidden Fates - Shiny Vault (SV) Featuring the S (Baby Shiny) and SSR (Full Art Shiny) cards from GX Ultra Shiny as well as some other miscellaneous chase cards that didnt fit the main set like Full Art Supporters, Rainbow Rares, and Gold Cards

So that makes how many spells to cast

Using ROTA to tutor a beatstick instead of using it for an answer, or using Graceful Charity immediately every time are common mistakes in the long-term goal for the deck