Their value comes from their special appearance and you basically have a stamp of approval that its a decent hold since it wont be something that comes around in the same form again
and jump into your first Duel, youll need a Main Deck, optionally a Side and Extra Deck, and a couple of essentials like a coin, tokens, and sometimes dice (based on what you and your opponent are running)
What is cEDH?: Competitive Commander cEDH is Commanders high-tier competitive side that features decks made specifically to ensure a win
You can also add an image to give the AI system more inspiration or add a negative text prompt (things you don't want in your image)
During his Duel with Mizar, Quinton incorporates "Rank-Up-Magic Argent Chaos Force" into his Deck, giving him access to "Number C9: Chaos Dyson Sphere"
Which isnt a lot, but its weird that its happened twice