yu-gi-oh rokket revolt structure deck Gateway Dragon (SDRR-EN013) [Structure Deck: Revolt] – Pokemon Plug Rokket Revolt Structure Deck 1st

So, I asked Bandai directly and I received a reply

for each monster your opponent currently controls that was Special Summoned this turn, it gains 1 additional attack during each Battle Phase this turn

Its cool seeing the various iterations in this vein

The card benefits a duelist with a Dinosaur-Type deck, like Rex's, but does little for anyone else

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

You can take a look at other product listings to get ideas