pokemon 25th anniversary chase cards TCG: Celebrations Collector Chest – Toy Cabal Pokémon Hit Points70 HP Form Pokémon Celebrations Top Chase Cards

They can be swapped in, when the player is forced to, and discarded right after, for the original Pokmon that was in that spot

Verhey describes the first Unknown event as his weird little side project (It was just me doing it in my free time), printing all the cards out himself and spending all day stickering them by hand in Philadelphia right before the show with the help of a few members of the event staff (We had no idea how long it was going to take)

Of course, Magic adds new game mechanics to practically every release

Granted, this leaves the second player to either reuse one of the simpler decks or use another from outside the set