Much of our inspiration came from Pascal Vieren's Izzet Drakes deck with which he went 9-1 at Pro Tour Guilds of Ravnica
Urzas Bauble Every copy of Urza's Bauble effectively reduces the card count in your library by one since it cantrips for free
As a rule of thumb, the deck should include at least 25 actual planes
Sword of Forge and Frontier Sword of Feast and Famine gets most of the attention (and vitriol), but Id argue Sword of Forge and Frontier is the new best Sword of X and Y in Commander
Next year, in Planeshift (2001), Card not found was less efficient, but had a kicker cost, which allowed for very early jump ahead
Chances are anyone interested in doing that is going to lean towards Atraxa, Grand Unifier or another massive value creature before this thing