It's explained that Wizards approach the IP holder, meaning Nickelodeon in this case, to find appropriate artwork for certain cards based on the card name and description
These seven were chosen to represent McDonalds as the official Pokmon sponsors and were selected for their established fan base
There are tons of lands running around for you to steal like Academy Ruins, Maze of Ith, Gaea's Cradle and more that massively enable decks, so take the land that is really causing your multiplayer metagame to lose, and then get it yourself
15 MTG cards per Booster Pack
Grain plays a role as well, this is the direction that the paper fibers are laid during manufacture
Castle Garenbrig and Nykthos, Shrine to Nyx are excellent mana ramp lands thatll let you pump out creatures early and keep that pace up as you keep drawing cards