Ken Goldin, the auctioneer who facilitated the most famous Pokmon card sale in history and the star of Netflixs King of Collectibles: The Goldin Touch , noted in a recent interview that there are certain individuals trying to acquire the rarest, highest-grade cards and taking them off the market for as long as they can. When collectors with massive platforms make massive bets, everyone else starts checking their shoeboxes
There's a card in the Marvel's Spider-Man set called Grendel, Spawn of Knull
They dominated Standard
Some cards got a Japanese showcase treatment exclusive to DFT Collector Boosters, like Loot, the Pathfinder and Chandra, Spark Hunter
Unfortunately for us in constructed, its a four-mana 1/4 that doesnt do anything until the next turn
You can also adapt this idea to other types of permanents like artifacts and enchantments, but creatures are by far the most common focus for reanimator decks