A powered cube containing nothing but blue, green, and colorless cards. Who needs those other boring colors anyway, am I right?
Archetypes include things like ramp, delver, show and tell, storm, affinity, mud, elves, merfolk, eldrazi, lands, stompy, probably some controlling or tempo-y flash decks, etcetera.
Warning! This thing hasn't really been playtested. I'm not sure wether all decks are reasonably achievable.