I mean, the rich Sephiroth in the Yu-Gi-Oh! anime was literally the “inventor” of the game, so that’s why he did some P2W whenever he played, as he had access to basically any card he desired, including unreleased ones afaik, and yeah, he’s also super rich, you’re right. (I wrote “inventor” in quotation marks because, according to the lore, it was ancient Egyptians who invented the game, the rich Sephiroth whose name I still can’t recall only brought it back to the modern age. But yeah, Yu-Gi-Oh! lore is pretty weird.)