312 Custom Cube with a focus on being similar to the Elegant Cube by Japahn but a cross between the 312 Uncommon cubes. The gameplay should be low to the ground, faster and reflect lower rarity cards that aren't necessarily less powerful but should be simpler in design. Cards should be flexible in many roles without ever raildrafting.

Decks:
Individual good stuff piles should be playable but shouldn't be better than a synergistic deck around a game plan. New players shouldnt be punished for picking up the cube but it needs to be deep and flexible for experienced players. Flexibility is a big part of the goal and tough complex decisions like those around holding a lightning bolt should be prioritized.

Now to Themes:
Mono White: A wide board of tokens and efficient token creators with payoffs. Some staxy effects too for the vintage aggro experience.

Mono Blue: A Tempo focus with emphasis on card draw and good decision making. This archetype needs to be powerful but very skill intensive and now easy to pull off. Similar to a Dimir style Ninja's. Card Filtration is a big point here.

Mono Black: Recursion and payment of life are a big part of blacks identity here. Recursion at certain costs like dredge or delver are important here. Similarly very difficult trading of resources like paying heavy costs of life for premium effects is important here partially because of how it reflects on a player, (Think Death's Shadow.)

Mono Red: Red here works in the moment and trades longevity in many ways for more instant effects. Large or random discards power up refueling card draw. Seasoned Pyromancer or Ox of Agonas or even LED help turbo out fast threats and dangerous creatures. Red also has an artifact subtheme as well that can feel recursive at the cost of self sacrifice / affinity.

Mono Green: The Big tradeoff in green comes at the cost of Lands, Lands are not only for ramping but also work in tandem as threats as fall triggers, and as sacrifice to power up large creatures and larger threaets than other colors.

Azorius: Recursion from white and draw from blue grants azorius a high card draw quality and density which it can leverage to both spin out more creatures and protect the threats they create. A general lack of top end is covered for here but evasive threats and protection. Other supporting effects come from white and blue's artifact affinity within cards and support for them.

Dimir: Blue's filtering power plus blacks power at any cost nature grands them a reanimating theme with excellent control pieces as well. This comes in either a tempo form with blue and black creatures being difficult to deal with on curve or just the overbearing top end with protection as well.

Rakdos: Power at any cost and an undying passion give red and black a slew of creatures that never seem to stay dead. Rakdos' wheel and deal playstyle is extended to your opponents here. Temporary loss for later gain is a key component of what makes Rakdos challenging but thrilling to pilot here.

Gruul: A simple in theory but not in practice archetype extends from green to the Gruul colors here because Nature of lands is going wild and getting riled up at the same time. Borborygmos style lands become projectiles armed with immediacy.

Selesnya: While plants grow freely they must maintain the neat lines layed out by the guild. Growing strong and orderly tokens are summoned but used to maintain order and the lands synergy guilds a contemporary Opposition take on draft.

Orzhov: Bitter blossom in large part acts as inspiration here and within other cards in the guild. Here rampant life loss from black is supplemented by a token life gain which acts both as stabilization and support for late game endeavors.

Izzet: Artifacts are your friends here and together help staticaster your way to victory. High card quality and flexibility are the hallmarks of this fast paced interactive deck. Flashback makes sure you never run out of gas and even for wild drafters Fiery finishes might rain from above in minor storm support. Wizards also incorporate the alchemist gambit style builds that take calculated risks in order to win masterfully.

Golgari: Recursion becomes the name of the game in this guild and lands only back up this support. Squirrels and elementals grant land zombies and primeval titans of nature's past to rise from the dead once again.

Boros: Small artifacts like pyrite spellbomb become an essential part of the "eggs" aggro strategy. Second Sunrise reanimates your artificer passion into a thopter scraps mess all whirring and spinning wheels.

Simic: Tempo is the name of the game and bounce becomes a large part of that. Not only do you bounce your own permanents but those of your opponents as well. All part of the biological experimentation package, your wild creatures have incredible effects all fueled by your landfall foundry.