Not only because it is largely responsible for the EDH format as we know it, but also because of how wacky the cards are
To get the great spots out of it, your opponent has to have the required board state as well as play spells into it
WB Humans, attrition (add green for more of both) UR Noncreature spells, but sometimes just instants & sorceries (add white to get extra value out of your Cycling noncreature spells) BG Mutate, Graveyard (add U for more Mutate support) RW Cycling, go wide (add B for more human tokens to go wide with) GU Mutate, goodstuff (add R for more good stuff?) To be honest, I havent felt this unsure about a formats archetypes in a while
If you don't control any creatures, you won't draw any cards
Each Play Booster includes 14 Magic cards, with 1 to 4 rares or better, 3 to 6 uncommons, 6 to 9 commons, and one land card