This system was in place starting back in 1996/97 with the Mirage block and continued until 2015 when it transitioned to a two-set per block system called the Two-Block Paradigm, discontinuing core sets altogether
If you fog the damage that would be dealt by creatures with toxic or infect, they wont deal damage, which means no poison counters
Similarly, Geths Grimoire will draw us a ton of cards over the course of the game, especially when it triggers off of a spell that hits each opponent, like Syphon Mind
To use the V-Union cards, players must connect all four of the special cards like a puzzle to create the V-Union tableau that, so far, features Greninja, Zacian or Mewtwo
Pokmon cards have rarity symbols in the lower right corner, with circles indicating standard cards, diamonds for uncommon cards, and stars for rare cards
Second, early on, I went to Aaron Forsythe, my boss, and asked if I could lead this set from the beginning of design to the end (exploratory, vision, and set design), and he said I could as long as I listened to my play designers, as card balance is not my strength