By mastering the Sphere Grid, each of your creatures will level up with helpful new keyword abilities
You can take a look at other product listings to get ideas
TAHK0 speculated on why the error may have happened, writing, Poke Balls went through a lot of early variations, with everything from the button placement changing, to how it opens differing, to even being depicted with the white on top. It could be that an early Pok Ball design actually did open like it does on the card back, but when the design was eventually changed to the opposite way, they forgot to update it on the card back before going to print, and it remains that way to this day
The card benefits a duelist with a Dinosaur-Type deck, like Rex's, but does little for anyone else
One of the first Pokmon cards produced in the English language, a rare hybrid of Pokmon and Magic: The Gathering cards, has sold at auction for $216,000