For our budget upgrade, we're trying to keep as many of these things intact as possible while increasing the consistency and adding some Ruby/Amethyst staples
Mewtwo EX's 20-Card Deck Focuses On Supporting Mewtwo Decks in Pokmon TCG Pocket contain only 20 cards, making building a deck a little easier
Another case is Yuzu Hiragi, who performed a Synchro Summon in Chapter 30, which she never learned in canon
Graded Cards (PSA/BGS): Cards in top condition submitted to grading services and receiving the highest grades (e.g., PSA 10) trade for 1.5 to 3 times the price of raw cards
Whenever it is added to the hand from either the deck or Graveyard, you can add another Earth Machine Monster from your deck to your hand so long as it has 500 or less Attack or Defense
When cards do land in the majority of decks, they often seem to be cards that were designed specifically with Commander in mind