You can't choose multiple creature types, such as "Lizard Wizard." Card types such as artifact can't be chosen, nor can subtypes that aren't creature types, such as Jace, Vehicle, or Treasure
Before that, these borders served an interesting purpose for the game
Grim Hireling Treasures changed Commander forever, and Im not sure what the format would look like now without all of those Lotus Petals running amok
My favorite thing about the Kieran from the Scarlet & Violet Pokemon game is how insanely strong he is, giving you a massively difficult challenge well past beating the traditional Elite Four
Then, you may put any number of Equipment cards from among them onto the battlefield in MTG
This ability reminds me of a rare in Red (Raging River) that was printed way back in Alpha that divided grounded creatures into two sides of a River and then they could only block or be blocked by that side, so this is a clear call back to that, but color shifted to Azorius, which makes no flavor sense to me