At its core, Amber and Emerald plays like a stunt deck, one where you want to get as many cheap dalmatian puppy cards to the table as possible
Getting two whole Lore that early in the game for removing a key character is massive
There are 204 cards in the main set, with 12 more Enchanted to find, making a total of 216
There's definitely going to be a need for play-testing to consider the possible changes in tempo
Although you're less likely to get a mythic rare at all in a booster, each mythic rare is only half as common as each rare, because far fewer unique mythic rares are printed for each set
The alternate art versions of popular characters like Tinker Bell, Mickey Mouse, Stitch, Belle, Cinderella, and Elsa are highly coveted by collectors