Her abilities were far superior to most other characters, being comparable to Jadens during the first season of the Gx anime
The realistic equivalent is building a standing relationship with a reliable Japanese supplier: an exporter-retailer you order from repeatedly, which earns you allocation on new sets, consistent condition standards, and a counterparty with real recourse
On top of that, it has a lot of versatility
Terapagos ex is the cover card of that set, and it is a crucial card in niche Palkia VStar variants along with decks that use it, Dusknoir and Noctowl to always maintain hand advantage and stay ahead in the prize trade
While its never a given that they will be, there are a few reasons why they often aren't
Keita Hirobe, an executive officer at The Pokmon Company, tells me that the project is meant to be more welcoming