Japan frequently puts out promo cards, special sets and limited editions that never receive an English printing, and these exclusives can become incredibly sought after over time
For example, Underworld Breach costs just 2 mana, splashes easily, and has no resistance or expert knowledge needed to power up with its synergized Brain Freeze and Lion's Eye Diamonds companions
However, these are limited to the classic showcase versions
This deck was completely built by myself and is not a pre-con
Or maybe you want the Elven Council deck, and force your table to do a whole lot of voting
With the franchises mascot, Pikachu, front and center (and classic favorites returning) this edition has quickly become one of the hottest Pokmon sets