CLOUDPOSTS AVAILABLE IN THE BASICS BIN, AS MANY AS YOU WANT!

This cube started with the idea about including Cloudpost and the Urza's lands in a cube. Just having a single deck be able to use/abuse these powerful lands sounds nice, but a bit narrow and hard to implement. So then I envisioned a cube that was made up of an amount of Cloudposts where everyone could potentially utilize them. Of course, what is one to do with so much mana? In comes mana sinks, X costs, scaleable threats. There needs to also exist a deck that can punish the big mana everyone is running around with; something fast enough or punishing enough against posts without being completely oppressive and unfun (e.g. Back to Basics).

This cube centers around abusing big mana to cast big threats, but not have something insta-win the game (e.g. an uncounterable Banefire). So no uncounterable spells that instantly win the game, but plenty of interaction to combat threats, and plenty of scaleable threats so that the game doesn't simply wait until everyone has 10+ mana.

I've opted to simply put Cloudposts into the basics bin, so folks are able to take a playset or more after the draft if they so choose.
With 4 Cloudposts, each taps for 4, yielding 16 colorless mana total. But what if your opponent also has 4 cloudposts out... The mana gets extreme really quickly, which is the fun part! Added to this should be even more potential for insanity and consistency: Planar Nexus and Nearby Planet. These increase the potential amount of loci out on the field, bumping up the fun. It's helpful that Nearby Planet is also every basic land, as then it's a fetchable locus source by fetchlands and more easily enables color fixing. We don't want too many of these as splashing should have a bit of a cost; these should be very very high picks in a draft where you're guaranteed a playset of Cloudposts. Similarly cards like Dryad of the Elysian Grove are extremely powerful, letting a 5 color deck be possible, but still quite difficult to pull off. But most decks will just be a couple colors.

Glimmerposts have to be limited a bit so that people aren't just gaining insane amounts of life; this could just drag games on and would put very aggressive decks too quickly out of reach. I break singleton here, as well as with some other lands in the cube (e.g. Vesuva, Nearby Planet, Planar Nexus), to up consistency but also make choices in the draft real.

The deck that punishes Cloudposts should be good; not oppressively so, but should be able to tax the big mana strategy and any truly greedy splashes. Cards like Winter Moon and Wasteland shine here, but are not just game over like Blood Moon or Back to Basics would be. There's Magus of the Moon and Harbinger of the Seas as threats that can be interacted with more. Price of Progress is extremely punishing to a deck purely on posts; let's hope they drafted a Glimmerpost! Cards that seem completely unplayable in other environments become a bit interesting here, e.g. Eye of Singularity is a sort of Armageddon for posts and supporting lands (and tokens), and Mishra's Helix is the ultimate Rishadan Port.

This is definitely an experiment, but I'd had the desire to play with posts in a cube and this seems like an excellent way to push the idea into a bit of wacky, hopefully replayable, fun!