op13 japanese booster box One Piece Carrying on His Will OP-13 – WAM CARDS 13 is a Special booster pack designed to commemorate the OPCGs 3rd Anniversary OP-13 Booster Box : r/OnePieceCardPulls

However, if your opponent doesnt mind they can use proxy cards in test battles

Ultimate Ultra Deck 8.8 49 [257481] JP022 Chimeratech Fortress Dragon Fusion Monster Effect Monster - 8 Machine 0 0 "Cyber Dragon" + 1+ Machine monsters Cannot be used as Fusion Material

Master's Rule Japanese: Rmaji : Saikshin ni yoru Shihai Translated: Rule of the Mightiest God Rex uses this Deck for the final duel

Wind to Flame and Ice to Sword If you place 5 cards with the [Hybrid] trait and different names from your hand or trash under 1 of your Tamers, 1 of your Tamers with 5 or more cards under it may digivolve into an [EmperorGreymon] that is in your hand or trash

Im not here to debate whether this is good or not, just that, clearly there is a temporal limit to the relevancy of these cards