yugioh arrow card "Rocket Express" SLF1-KR001 Korean Ver Super Rare the Prince of Endymion or 1 monster that mentions it in your GY Yu-Gi-Oh - Arrow of Regulus

They are only handed out at card shops that host official Yu-Gi-Oh

Here are a few ways you can win by playing a single card: Being the only girl, being the only one without points, having an even number of players in the game, having five or more cards, owning a pony

Though even for this kind of stuff, it's not uncommon to see a mono-coloured deck splashing another colour (if you're unfamilar with the term, it means adding one or two cards of another colour but not commiting to that colour for the deck)

If you choose to focus on the token making part of Judith you should have plenty of aristocrat effects at your disposal if youve been in the format for a while as well