Pokmon cards become valuable due to factors like rarity, condition (graded by PSA), and historical significance, such as first-edition or promo cards
Use online proxy generators
While there were several competing styles of Survival decks around the time of its banning, the one that really ignited the controversy was Calebs Vengevine/Survival deck that would quickly put all its Vengevines into the graveyard, then play a couple of Basking Rootwallas for free, leading to extremely backbreaking assaults (frequently in the air, thanks to Wonder) that were immune to most forms of interaction
By having the usable Energy on Ogerpon, players can use their Energy Switch Trainer Cards to put it on the Regidrago VSTAR instead
Spending just eight mana on this gives you three lords to buff all of your creatures by +3/+3 in total, something that any kind of tokens deck is happy to have