Welcome, guys.
This cube was designed for 8 people draft, each drafting 4 packs of 20 cards, containing 15 non-lands random cards and 5 lands.

At the end of the draft, your deck should contain 60 cards.

The draft designed around the five clans of Tarkir. Each clan has 14 cards of its color (in the cost!) and 3 supportive guilds with 23 cards each, picked to allow building around the three colors 14 cards of the clan.
For example, half the Orzhov of this cube is made for tokens (Abzan) while the other half has aggressive vampire theme (for Mardu and all their beloved undead friends).

I think the difficulty of this cube is high, understanding what you'd like to play, what goes with what and when you should prioritize lands over playables makes it kind of overwhelming for experienced players, but as anyone who built 5c deck before - the payoff is just too damn good.

HAVE FUN!
Ofek.