If you have Pokmon cards that you no longer want, there are many ways you can sell them
Situation: I bought a 1st Edition Mewtwo, Zapdos, Nidoking, and Ninetales from an individual who has kept these cards (along with many others) in a family photo binder since the early 2000s
This makes Be'lakor very strong not just when it enters, but also passively throughout the game
So put all of your cards in protective soft sleeves
As the gentleman who helped me at the game shop that day put it after I explained, "You could not have picked a worse time to try and get back into this." And he's not wrong -- prices on some of the cards I would need to seek out like Charizard, Mewtwo and others, are already expensive now, and this is a project that will take years, not months, to complete these sets
One of the challenges of playing 12 Moon is that if our opponent can sneak a creature or two through our land lock, we don't have a lot of ways of dealing with them, and even if our opponent can't cast most of their cards, they can win with just those creatures