The standard Pokmon card dimensions are: Width: 2.5 inches (63 mm) Height: 3.5 inches (88 mm) Thickness: Approximately 35pt Thickness in inches: 0.01 inches Thickness in millimetres: 0.35 mm Because these dimensions are used throughout the Pokmon Trading Card Game, collectors can confidently buy standard sleeves, top loaders, binders, deck boxes, and other storage solutions without worrying about compatibility
In this format, very few cards were banned
The card itself is a reference to a meme of Emrakul being taken down by 15 squirrels
Gizmodo Australia
A lot of the cards in the deck can make mana too - which means you can cast big game-ending spells like Tyrranax Rex and The World Spell when youve had enough fun and need to win
Then people move on to the next generation because once you've gone through Jungle, Base, and Fossil, you pretty much have one copy of every [first-generation] Pokmon