A lot of the really expensive cards are also foils, which for the card stock they use for English cards ends up warping quite a bit over time. I knew multiple people who refused to buy foils ever because of this.
I used to be deep into the competitive MTG scene. It goes deeper than this. Everyone knew that foils caused warping, which would lead to different theories of the “best way” to foil your deck to get an edge, while also being plausibly deniable that you were essentially marking your deck with foils if someone called a judge on you.
At the high level MTG is as much about rules lawyering as it is about actual skilled play, if you’re curious to learn more about this aspect of the game go learn about the 1997 pro tour with Mike Long, who infamously took the win by mind games and causing his opponent to concede when Long had no path to victory.
I used to be deep into the competitive MTG scene. It goes deeper than this. Everyone knew that foils caused warping, which would lead to different theories of the “best way” to foil your deck to get an edge, while also being plausibly deniable that you were essentially marking your deck with foils if someone called a judge on you.
At the high level MTG is as much about rules lawyering as it is about actual skilled play, if you’re curious to learn more about this aspect of the game go learn about the 1997 pro tour with Mike Long, who infamously took the win by mind games and causing his opponent to concede when Long had no path to victory.