Most formats let you play just four copies of a card (or just one in EDH) but you can instead put nine Nazgul in your deck, one for each of the different artworks
The cube is so full of interesting cards and mechanics from all across magic you really don't need your deck to be all that exotic, creative or exciting to wind up having some insane and memorable games
Judges and tournament officials are also a great source of information about the tournament and the game in general, but make sure you hold any questions that arent directly related to what is going on during the games until after the tournament is over, so they can stay focused on the event at hand
While his power and toughness are pathetic, finding a way to give him vigilance would change the entire mindset of battle
With your cards shipped, we must wait
Lots of great feedback around this rollout from the Magic Online community