Duel Monsters 4: Battle of Great Duelists (but not in the physical card game as a legal card), and are the only ones to not have a password even across these video games
When the developers sunset the previous tool, they were not able to migrate every single card in their database and as a result, some of the oldest ones (Hearth Gold / Soul Silver series, as well as Black and White) were not coded into Live
Class cards arent legendary so theres nothing stopping you from playing more than one of the same class card at a time
Even if you don't hit one of those serialized cards which are one of the most desirable MTG cards you can open in a pack , there is still tons of value in other Final Fantasy cards, partly due to the game franchise's legacy, and partly due to the strength and playability of the cards themselves
For example, the compleated planeswalkers use a different style altogether