Collector Boosters Discover delights in the back of the stacks, like special Japanese-language Mystical Archive cards in Silver Scroll foil, beautiful Borderless cards, or Special Guests cards
Access to 6 of MTGs most iconic spells is incredibly powerful, and while only Braingeyser and Regrowth see consistent play in the format (though Black Lotus absolutely would if it was legal), Terror, Disenchant, and Shivan Dragon can all still be very handy
If you Enchant either Monolith, you can tap to add mana, then pay two less mana to untap the Monolith thanks to Power Artifact, tap for more mana, and repeat the process
Creature ramp: Solemn Simulacrum, Sakura-Tribe Elder, Wood Elves, etc
If you play a lot of constructed Commander, these decks arent any more complicated than player constructed decks, but theres a lot of triggered/activated abilities, +1/+1 counters, and various mechanics from all over Magic inside them
In that case, pack lands more towards the 33-35 range