The reason is simple: Trainer cards were beyond overpowered back then
30 packs per booster box, each pack contains 5 cards
they're gateways to a universe where strategy meets imagination
Trading Card Game is built around creating decks focused on specific card types, which makes the game more archetypal than other card games
September Champions Path - Pin Collection - September 25, 2020 Version: Nessas Hulbury Gym, Milos Turffield Gym, and Kabus Motostoke Gym October Champions Path - Special Pin Collection - October 2, 2020 Version: Stow-on-Side Gym and Circhester Gym November Champions Path - Pin Collection - November 13, 2020 Version: Opals Ballonlea Gym, Piers Spikemuth Gym, and Raihans Hammerlocke Gym Sword & Shield Elite Trainer Box Plus - Zacian or Zamazenta - November 20, 2020 In various countries delayed to January 2021
Crypt Ghast and Bubbling Muck for mana boosters