b He borrows this card from Kaz in episode 76
By game 5 you know the counter phase mechanics better than most players who started with control builds
If youre looking for ideas on which cards will turn a profit, pretty much anything from best Pokmon booster boxes and special sets (especially from older sets like the Sword & Shield era) will likely yield more valuable cards
and for the highest tier, you can even drop off and pick up your submissions directly from their Sarasota location (which top local collectors may prefer over the anxiety of sending dozens of cards through the mail)
I know there are other options to store these cards like with a pokemon card binder
Of course, this ability is a significantly weaker in a multiplayer game, but chances are, the players who are not targeted by its ability won't see it as a threat, so it's not at a big risk of being removed from the board