Eventually, people can get their hands on more rare cards through putting in the hard work
Single rare Pokmon cards have also fetched large amounts of money in the past, including a first-edition shiny Charizard card - which was holographic and shadowless - that was sold at an auction for $264,000 (197,000), alongside an incredibly rare Pokmon card signed by the president of The Pokmon Company, Tsunekazu Ishihara, that went for almost $250,000 (187,000)
Lets make it a 5/3, gains five life, and gives you that token creature no matter how he leaves playdies, gets bounced (eff you Vapor Snag), gets blinked
As mentioned, the Edge of Eternities will drop on August 1, although pre-release events are scheduled for July 25-31, offering an early glimpse into the forthcoming cosmic chaos.
Heck, tweaked a bit Caribou Range-ish cards would be quite playable today (probably they'd get rid of the activation cost, make it smaller, or make it not an Aura)