Cubedrafting.com provides the following definition: Simply, the Cube is a draft format where you get to play designer and developer
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
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)
Notice, for example, that the card doesn't make cycling free, it cuts the cost by
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
Its 2-mana, instant speed, and hits nearly anything