Trading cards are just one part of the massive worldwide Pokmon franchise theres anime, feature films and video, and smartphone games like Pokmon GO
However, the tin/chest aspect is still useful, as it can be a great place to store bulk, and the designs can look great as well
Card hunters almost never think to check hardware stores, so packs can sit on the shelf for weeks
Rare cards like this will usually increase in value over time, as long as there is still some interest in them or the game they are a part of
If even a slight anxiety remains, it is safe to have a card specialty shop or an experienced collector look at it
Banding gives you a combat math advantage as you can choose which creatures (or more likely, a creature) will die