Supported Archetypes
WUg: Flicker Tempo
UBr: Permission Control
BRw: Sacrifice Aggro
RGb: Ramp Midrange
GWb: Tokens Midrange
WBu: Life Drain Control
URw: Spells Matter Tempo
RWg: Tokens Aggro
BGu: Sacrifice Midrange
GUr: Ramp Tempo
Each archetype has two primary colors and one secondary/off-shoot color, which means there's lots of bleed and play between all of the archetypes. This makes every deck feel unique and interesting to draft and play, since there's not simply ten exact blueprints from which to build a deck. Several two-color pairs also have small sub-themes, such as ninjutsu in dimir and pingers in rakdos, which add an extra bit of synergistic flair to the deckbuilding process.
Also, this is primarily designed to be a battle box cube, so there's a number of decisions made in service of that goal—primarily that there are no nonland tutor effects (the nonbasic lands are removed when playing battle box) and there are several cards which become more interesting when playing with a shared graveyard. Despite the "official" battle box recommendations, however, I have not shied away from card draw and ramp effects, as I consider those to be critical aspects of the game that would feel wrong to exclude from what is my main source of Magic playing these days.
Colored Artifacts:
Ancestral Blade
Witching Well
Ethercaste Knight
Vault Skirge
Porcelain Legionnaire
Spined Thopter
Tormentor's Helm
Eldrazi:
Eldrazi Skyspawner
Wretched Gryff
Scion Summoner
Ulamog's Crusher
Hybrid:
Whisper Agent
Burning-Tree Emissary
Unmake
Snakeform
Frostburn Weird
Reminder Text:
Mnemonic Wall (Defender)
Pacifism (Enchant)
Dead Weight (Enchant)
Wild Growth (Enchant)
Bonesplitter/Leonin Bola/Vulshok Morninstar (Possibly shorten Equip reminder text)
Youthful Knight (First strike)
Seraph of Dawn (Flying)
Cloaked Siren (Flying)
Skyknight Legionnare (Flying/Haste)
Flurry of Horns (Haste)
Spike Jester (Haste)
Bellowing Elk (Indestructible)
Seeker of the Way (Lifelink)
Tithe Drinker (Lifelink)
Apostle's Blessing (Protection)
Twin-Silk Spider (Reach)
Murasa Behemoth (Trample)
Wildsize (Trample)
Other:
Custodi Squire
Renegade Freighter
Cycle Lands