How to Perform the Test: Take a known genuine card from the same era and shine your flashlight directly through the back of it
Its a staple for deck consistency
In the partnership announcement, they also asked their customers to refrain from ordering more food that they can eat and reselling the Pokmon cards on the platform (or anywhere else)
Find a starter kit you like, grab a friend, sleeve them up, and jump in
They may look at if the printing is centered, if the corners are unbent, if theres damage to the edges, and if there are any visible creases in the image
When you have too many cards in your hand, make use of spare Event cards such as "OP11-060 Let's Crash This Wedding!!!" by trashing them for Nami's [On Your Opponent's Attack] effect, similar to a Counter, allowing you to keep your hand size below 7 to activate your Leader effect