Basic Primer:

• No tokens, no counters, no dice, no emblems (by extension, no planeswalkers)
• Graveyard synergies
• The only grave hate in the cube is incapable of removing the whole grave
• Each colour pair has one tapland, one fetchland and one land that enters untapped

The aim for this cube was to build a relatively low-power, loosely graveyard-themed "bar cube" to proxy and have lying around in case people decide they want to play Cube. Heavily inspired by @Kapernaumov's excellent Penrose Cube. As such it follows "Bar Cube" rules (no dice/no tokens/no counters), tends towards graveyard synergies, and started out its design slightly leant towards black and red, blue making up for this more easily with more use of artifacts and colorless spells.

It is recommended that you play this cube with proxies! It is not budget and yet stays relatively low power, so there is virtually no reason to buy the real cards.

Since the cube is highly graveyard-focused, graveyard hate is much more powerful. There are no cards in the cube with the ability to exile more than one card in any one graveyard at a time. Take the Phyrexian Furnace, it's better than you think!

Archetypes and aims include rushing lands, graveyard maneuvering, Madness, artifacts, Crucible + Fetchlands, and Domain strategies.

Archetype Guide:

• Artifacts
  Mox Opal, Sanctum Gargoyle, Mycosynth Golem, Razortide Bridge, Mistvault Bridge

• Madness
  Basking Rootwalla, Asylum Visitor, Big Game Hunter, Reckless Wurm, Anje Falkenrath, Bazaar of Baghdad.

• Domain
  Dominaria's Judgment, Bortuk Bonerattle, Conflux Spara's Headquarters, Xander's Lounge, Jetmir's Garden.

• Gruul Lands
  Allosaurus Rider, Rubblehulk, Azusa, Lost but Seeking, Cultivate Plated Geopede

• Tempo Control
  Sleight of Hand, Shock, Bonds of Faith, Bloodwater Entity, Soldier of the Pantheon

• Graveyard
  Dread Return, Cabal Ritual,

• Knights (Minor Archetype)
  Haakon, Stromgald Scourge, Hero of Oxid Ridge, Guardian of Faith

• Elves (Minor Archetype)
  Priest of Titania, Elves of Deep Shadow, Boreal Druid

Combos:

• Kiora's Follower + Scorched Ruins nets you eight mana very early. Plenty of sources of 2+ mana in the cube that work with the follower, like bouncelands or Priest of Titania.

There's plenty of room to mix archetypes due to Domain and discard/graveyard synergies.