Rules to this commander cube:

Draft 4 Packs with 13 Cards.
Monocolored legendary creatures have partner.
No coloridentity rule!
Build a 50 Card Deck with ~ 29 spells (including your commanders) and ~ 21 Lands.
Start life is 30.
First muligan is free. When you have 0-1 or 6-7 lands in your starting hand you can reveal it an get another free muligan.

Archtypes:

{W}{U}: Flying / Bounce
{U}{B}: Self-mill / Graveyard
{B}{R}: Sacrifice
{R}{G}: "Power matters"
{G}{W}: +1/+1 counters / Life Gain
{W}{B}: Tokens
{U}{R}: Pirate tribal / Artifacts
{B}{G}: Elf tribal
{R}{W}: Equipment and Auras
{G}{U}: Lands