All-colorless cube, designed primarily for 2p Winston Drafts. Colored mana is only available via non-basic lands or other drafted sources, and will almost always cost you life, an extra land (via filtering), a creature, or some other price. Not that there are a ton of colored costs, but it's something to keep in mind.

Here are some of the major subthemes that can be assembled:

+1/+1 Counters

Build 'em up, pass 'em around.

Attack of the Myr

Go get 'em, little guys!

Sacrifice

Mmmm... crunchy.

Token Swarm

Spawns, Scions, Myr, Gnomes, Soldiers... beat your opponent through sheer numbers.

Ramp

With this many Eldrazi and other giant constructs running around, you're gonna need more than just lands.

Lands

Speaking of Lands, many of them aren't sitting by idly either!

Equipment/Vehicles

Not really a synergy-driven strategy, but there are definitely ways to make your smaller creatures more threatening.