Number 17: Masters Key 2010 Japan World Championships Promo ($30,000) The Masters Key was given out to national finalists of the 2010 Japan World Championship Representative Tournament, which took place on June 20, 2010, at the Tokyo Dome City Prism Hall
People bought some around $70ish which is pretty good considering the high EV and the high price of some foils a foil Leovold pays for like half a case, for example
February 17, 2023 OP01-002 Trafalgar Law Note: This is an image of the fixed, post-errata version
There are dozens and dozens of various error cards that have popped up over the years, so it may take you a while to check your collection for them, but it may be worth it if you wind up finding one
There are 46 different themes to choose from, and at two themes per deck, there are over 1000 different decks to play with