pokemon lost origin booster box Pokemon: Sword & Shield and special Energy cards introduced in this expansion Pokémon Lost Origin Booster Box

IIRC in Yugioh there is only a certain number of Blue-Eyes (from the show?), so you could put a rule on the card 'there may only be X Blue-Eyes on the battlefield at any time', Star Wars CCG used to have permanents that you could have 2 or 3 copies of in play, in addition to stuff you could only have 1 of, the concept would work fine here too, only this could care about both players' boards

Well, it seems I'll need to think about what to do with the Mawile-GX slot in this deck as well

[All Turns] When this Digimon would digivolve or leave the battle area, delete all of your [Amon of Crimson Flame] and [Umon of Blue Thunder]

Each booster box contains 36 packs (10 cards per pack)

they're experiences that pull you deeper into the game's twisted world