The Presentation Blastoise card sold in January 2021 for a cool $360,000 / 260,000 at auction, and while it's since been surpassed, at the time it clinched the title for most expensive Pokmon card ever sold
Players sometimes justify its inclusion through logic such as "If you mill six cards from your own deck, and the only flashback card that you turn over is a Think Twice, you're still going to be even on cards." But in green-blue-black mill-yourself decks that are actively looking to get as much of their library as possible (and in some cases all of it) into their graveyard, finding ways to continue to mill yourself is absolutely crucial
Honorable Mention #2 Sakura-Tribe Elder There was a time when I think we would all seriously consider an argument that STE was one of the top five land fetchers of all time
1 Welcoming Vampire
The Deck Vault LX 200 is similar but holds 2 decks
The Final Surprise Full details on the Ultimate Guard Finals can be found here, and we're not quite done with the curation details