So this cube is not just a Khans recreation. This will have every card from Khans of Tarkir, PLUS cards that help with the archetypes and synergies Khans already had to begin with.

Main Themes:
RWB: Raid - Attacks Matter
GUR: Ferocious - 4 Power
WBG: Outlast - +1/+1s
URW: Prowess - Spellslinger
BGU: Delve - Graveyard

Subthemes:
Warriors (WB)
Tempo (UR)
4 Toughness (BG)
Tokens (RW)
Morph Matters (UG)