In his yearly State of Design articles (which he has been publishing since 2005), he examines each set released the previous year and talks about the highlights and lessons of that set
As with Magic, an ongoing plot takes center-stage to keep dedicated players invested as well (it was apparently the first major work done on Lorcana, with Miller pointing out that the team "wanted to make sure that it didn't feel like we were just putting characters on cards")
If you are a fan of the franchise, however, this crossover is incredible
MtG Trading Card Game Commander Legends: Dungeons & Dragons Battle For Baldur's Gate Rare Mighty Servant of Leuk-o
It's important to note that the higher the player's level gets, the more XP they'll need to level up, and the only way to reliably farm XP right now is by winning PvP battles, which can be a bit of a grind
If you're comfortable working with URLs, you can use Scryfall's card search API to produce a CSV list