Most of the cards you can find on the internet, or even real Magic The Gathering cards are sometimes poorly designed, displaying awkward artworks and weird texts
Also, we skip the cards with two names like modal-double face cards, transforming cards, and split cards like Aang, at the Crossroads/Aang, Destined Savior are not in contention
Designer Notes: Cats and Dogs work together
Of course, there were some newer post WOTC cards that have fine regular holo design that I can appreciate, but they belong to sets full of the stuff in question here
When to Sell and When to Hold Deciding when to sell your Pokemon cards can take time and effort
You basically just need a card or two to turn this into something obnoxious