The only proxy allowed in sanctioned play is typically a judge-issued proxy for a narrow set of situations (like a card becoming damaged during the event)
Doug Beyer was a creative director at the time and Jessica Lanzillo, the other creative director at the time, went, OK, OK, you know what
We focus on the Go Tall strategies by cutting out the Go Wide cards, cut out generally worse cards for better alternatives, lower the overall cmc of the deck, and introduce a few "I Win" cards such as Berserk
Five new MTG X Marvel Secret Lairs were suddenly announced on Friday afternoon
This allows the deck to maintain a level of consistency from both the library and the graveyard that other decks find hard to keep up with
This particular Gem Mint card sold for $420,000 in March 2022