Drawing 6, 9, or even 12 extra cards by turn 3 or 4 allowed Blue to simply overwhelm opponents with resources
It's also likely that fake cards will continue to improve rapidly because there's a ton of money to be made by the counterfeiters, and with several or even many different operations making fake cards, each individual counterfeiter has an incentive to keep improving their "product" to stay ahead of the competition
The Genetic Apex set helped establish the meta for Pokemon Pocket, with Mistys coin flipping winning games off the bat, while Pikachu ex and Mewtwo ex fought to be the strongest Mon in the mobile game
Thanks to Electric Generator, Miraidon ex can use Photon Blaster, potentially, on the first turn of the game, making it a much faster threat
It's simple: You put your card into a sleeve, and then you put that sleeved card into another, larger, sleeve