The cube is based on creatures and combos with creatures. It's designed to be a 360 card cube. The goal of the cube is to provide a nice draft experience to play with powerful cards in a balanced environment. The cube is easy accessible for beginner cubers and has enough depths for experienced players.

For the Landbase the cube has Trilands and Thriving Lands from Jumpstart to provide a cheap way to support multicolored decks. This design decision was made to have mana fixing accessible but with a cost of being slower.

For the color pairs we have the following themes:
Blink
Value / Control
Aristocrats
Landfall / Beatdown
+1/+1 Counter
Reanimate
Spellslinger
Graveyard
Tempo Beatdown
Ramp / Value

More details you can find here:
Azorius:
Blink
Top-Enabler:

Top-Pay-Offs:

Dimir:
Value

Control

Rakdos:
Aristocrats
Top Enabler:

Top Payoffs:

Note:
You can branch into white to have access to the token generators and Elas il-Kor, Sadistic Pilgrim. You can also branch into green for additional value (Poison-Tip Archer) and Sacrificeoutlets (Jarad, Golgari Lich Lord and Vraska, Golgari Queen)

Gruul
Beatdown

Landfall
Top Enabler:

Top Payoff:

Selesnya:
1/+1 Counter
Top Enabler:

Top Payoffs:

Orzhov:
Reanimate

Top Enabler:

Top Reanimates:

Top Reanimate-Targets:

Spellslinger
Top Enabler:

Top Payoffs:

Graveyard / Sacrifice
Top Cards:

Tempo (Token) Beatdown
Top Aggro Cards:

Top Payoffs:

Ramp
Top Enabler:

Top Payoffs: