how do you know if pokemon card is first edition What a 1st Card? Let's dive into the key

I want to judge at a Remote Duel Regional Qualifier, instead of competing as a Duelist how can I apply

Pokemon Trading Card Game Sun & Moon Guardians Rising Uncommon Clefable #89 Pokemon Trading Card Game Sun & Moon Guardians Rising Uncommon Clefable #89 IN STOCK Estimated ship date $0.50 NOTIFY ME WHEN AVAILABLE Email address submitted

Lastly, I do not understand why the game gives out only 5 cards per pack, and think it should be changed back to 10

It comes with a complete, easy to learn, and ready-to-play 50-card Deck featuring many of Yugis most famous cards, plus six Duelist Packs containing 30 additional famous cards to customize the Deck however you want