one piece booster box 13 OP-13 Carrying On His Will [Japanese] – NebulaTCG The cards included in this release are more luxuriously designed than ever before ONE Piece Card Game Booster

Super-huge, in-your-face monsters exploding out of the cards at you, hitting you in the cornea like a comic book onomatopoeia

You can find an Isshin, Two Heavens as One list for a little over $60

The options in Standard for nongreen decks are a bit limited, but there are some good ones: Arcane Signet was designed specifically with Brawl in mind and was put in the paper Brawl decks Wizards of the Coast published to support the format when it first came out

except with a different art, flavor text, and context "ancient" goes from "literally displaced in time" to "astonishingly old and hardy despite living in a river full of probably undead crocodiles." So that's the theory