So I was reading the penalty guidelines and found this: Examples of Marked Cards: Major include: •All of the Basic Pokémon in a player’s deck are parallel holo, causing a slight bend down the center of the card. This creates a pattern that allows the player to identify Basic Pokémon when the cards are face down, at rest. I was studying to become a professor and got my mind blown reading this, ¿does this really happens ?(or just used to happen). I have seen lots of decks that use holo for everything or just pokemon but never thought that It could be a problem.