It is a unique ability that allows them to change their card typing depending on what the last Energy card attached to it was
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
Drawing 6, 9, or even 12 extra cards by turn 3 or 4 allowed Blue to simply overwhelm opponents with resources
Weather you're buying your winter jacket in the middle of summer, or filling up the tank the night before a long road trip
The card's scarcity and Lugia's continued popularity will keep the value of this Pokmon card high for years to come