A high synergy with lots of overlapping themes and small packages, modeled around the power level of Standard formats from the 2000s and 2010s. Heavily inspired by Magic Online's Magic 30 Cube.
The name is in reference to a power level metric: In this cube, Lightning Angel is a baseline strong threat that is worth playing 3 colors for.
Archetypes and Packages
Sacrifice
Not necessarily Aristocrats, more of a value deck. Use tokens, creatures that like dying, or creatures with strong ETB effects (especially Evoke creatures that you can sac before they sac themselves) to fuel powerful sacrifice outlets and win through a game of attrition. All those creatures dying can fuel graveyard synergies, too. Strong in Red, White, and Black.
Tempo Spells
Load your deck with cheap interactive spells and cantrips alongside creatures that get better when they see you cast them. Creatures with Adventures like Merchant of the Vale can help you increase your overall spell count without sacrificing creature slots. Focused in Blue and Red, but can dip into Green for cards like Managorger Hydra.
Welder
Loop artifacts with sacrifice and recursion. Many artifacts in the cube have effects both on ETB and destruction, such as Perilous Myr, Pilgrim's Eye, and Solemn Simulacrum, so these abilities can be triggered many times with effects like Daretti, Scrap Savant. You can also use these effects to reanimate game-winning artifacts like God-Pharaoh's Gift or Platinum Angel. While focused in Red, Black can also contribute tools for sacrificing such as Deadly Dispute and Oni-Cult Anvil.
Ninjas
Use the Ninjutsu keyword in conjunction with evasion to sneak in powerful Ninja creatures and bounce your other creatures back to your hand to rebuy their effects. Many Ninjas have synergy with their own creature types, making this a very synergistic archetype focused in Blue and Black.
Enchantments
Draft lots of enchantments and cards that like you playing them. You can play an aggressive game with Auras, a slower deck with value enchantments, or somewhere in between. Green is the center color of this archetype, with additional support in White and Black.
Tokens
Gum up the board with tons of creatures and utilize effects that buff your whole team or let you tap all your creatures for strong effects. Strong in White, Green, and Red.
Swamps
Korlash, Heir to Blackblade is the only card that isn't singleton in the cube, with 3 copies enabling his Grandeur effect. This forms the backbone of a Mono Black deck that gets a large amount of Swamps into play, then uses them in conjunction with payoffs like Cabal Coffers to generate lots of mana for casting high-cost haymakers like Corrupt, Sorin Markov, and Kokusho, the Evening Star. This deck can also dip into Green for more land searching effects: Try and grab a Haunted Mire if you do.
Graveyard and Reanimator
Load up your graveyard for value, or to cheat out a big wincon. Every color has its own tools to contribute to this archetype: White has the most powerful reanimation in Unburial Rites and Karmic Guide, Blue and Red have great effects that let you discard and draw like Rain of Revelation and Faithless Looting, and Black and Green have some of the strongest payoffs like Roar of the Wurm and Patriarch's Bidding, as well as enablers like Golgari Grave-Troll and Psychatog.
Equipment
Attach Equipment to creatures that are great at carrying it, like things with powerful keywords or artifact synergies. Sunforger and Fervent Champion are an especially potent combo, allowing you to tutor and cast any red or white instant from your deck for only 2 mana (and even draw you a free card using Manamorphose). Centered in Red an White.
Treasure
Use Treasure tokens to ramp and fix your mana, or sacrifice them to other effects for value. While Treasure decks have overlap with Welder decks in terms of artifact sacrifice engines, their focus allows them to easily play splash colors or spells with high mana cost, alongside Treasure-specific payoffs. Treasures appear primarily in Black, Red, and Green.
Flicker
A fan favorite cube archetype, get value out of spells that exile things from the battlefield, then return them. Of course the obvious use of these spells is rebuying ETB effects, but they can also be used to cheat into play creatures with certain abilities, like a morphed Exalted Angel, a Prototype Combat Thresher, or an Evoked Briarhorn. Centered in White and Blue.
Ramp
Step 1, make extra mana. Step 2, cast big spells. Simple as can be. Treasure production and Mana Rocks from Blue or Red can supplement Green's more dedicated land ramp effects to help you cast your topend.
Classic Control
Control the game with counterspells, sweepers, and card draw, then secure the win with a resilient wincon. This deck is especially well positioned to take advantage of cards with the Foretell mechanic, like Behold the Multiverse, Saw It Coming, and Doomskar. White, Blue, Black, and Red can all contribute to this archetype.
5 Color
Hey, it's a slow format, why not get a bit greedy? The cube has a high amount of landcycling cards that can help you fix a 5 color manabase, and alongside the usual benefits of being able to play all the best bombs, there are cards in the cube that serve as payoffs for playing a lot of colors, like Hiveheart Shaman.
Multicolor Morphs
Other Buildarounds and Combos
Mono Blue Devotion