Cubedrafting.com provides the following definition: Simply, the Cube is a draft format where you get to play designer and developer
Like, there are several different special card types that allow opponents to draw two prizes upon a knock out, but they otherwise have zero mechanical connection between them
Ours pre-covers every MTG color (7), every common card type (Creatures, Planeswalkers, Lands, Instants, Sorceries, Enchantments, Artifacts, Battles, Tokens, Legendaries) and every weird edge case (Vehicles, Split Cards, Dual-Faced, Conspiracies, Sagas, Emblems, Backgrounds)
It's important for you to be able to have a good mix so you can play your cheap spells in the early game and your expensive spells in the late game
The boxes for the miniatures are a little big higher so that you can lay the rules and the other stuff ontop without bending them