Some of these are indicated by your double-sided investigator card, that has the stats on one side, and deck building restrictions and background story on the back
ZEXAL episode 109: "A Sea of Troubles, Part 2" 25.0 25.1 Yu-Gi-Oh
At first glance, I thought it was just another three-mana draw two in blue
That said, there's something to be said for a card that has mostly seen steady growth in price, rather than losing value over time or flatlining
There are still plenty of targets for it, so no reason not to play it
So, the Set Booster has less overall commons and uncommons than a Draft Booster, but we believe we've balanced them to what is more optimal to the players (not creating cards they want to ignore so quickly) to allow us to put other things in the booster that would be more exciting and impactful