mtg one of one cards Lord the rings: Rarest Magic: The Gathering card – 'One Ring' found, worth 'million-dollars' [Main] [Draw 2] MTGNexus - One Piece

Cacophony Unleashed What do you need to play more of in Commander

Furthermore, there are many more widely played formats (such as Tiny Leaders) I could provide a link to, but the reality is that if you include all those formats in your definition of previously banned, some person will eventually just invent a format that bans every card but basic lands, and therefore will be able to tutor all cards

I can see a real upside to being able to deal with problematic cards/strategies as needed and not having to deal with waiting to ban/restrict them, but on the other hand I see a real downside in making it harder on players to keep up with this information

Can't find some of the suggested land-searching cards