You're allowed to play as many Game Changers as you'd like (they're not banned cards), but the number of Game Changers in your deck determines which bracket your deck falls in
These variants can be found in Draft, Set, and Collector Boosters, while some of the uncommon showcase cards can be found in Theme Boosters
To trade rare cards (three diamonds) or higher, you need Shinedust , which is obtained when you unpack cards that youve already acquired, as a mission reward, or by trading your now-defunct Trade Tokens in the shop
Getting cards graded is a whole separate, much more involved hobby than simply collecting cards, and the people that do it are engaged with the secondary market
Echo: Okay, this one gets weird
In Pokmon Ranger , instead of playing a Pokmon Trainer you play a Ranger, responsible for protecting Pokmon in the wild