This means (a) there has to be enough creatures with the creature type to matter mechanically (although having a lot in the past also helps) and (b) it has to flavorfully fit
Not intentionally, of course, but by being so obsessed that it creates something of a barrier to entry for the casual crowd and kids who want to dip their toes into Disney Lorcana
I also promised you that he would make this week's list, and I ain't a liar
While being a mono-color deck can be a downside (especially for a commander with a grounded effect like The Reality Chip is), blue is one of the primary colors for artifacts, allowing you to play many of the best artifact-focused cards in the game
These errors can make the cards unique and sometimes more valuable to collectors
There are some game states for which I would keep this, especially if my opponent was poised to beat me down