While giving your opponent a City of Brass might sound like a bad idea, it's actually a great trade when you consider that the alternative is being beaten to death by a Celestial Colonnade or your opponent casting a Karn Liberated on Turn 3 with the help of Tron
In my opinion, the true strength of the deck lies in the fact that your range of powerful gameplans is varied- you can of course simply produce a Grief or Fury on turn one, however a simple Ragavan into Thoughtseize or Orcish Bowmasters into Fable of the Mirror Breaker are often decent enough curves to create a dominant presence on the board
Minnie Mouse Wide-Eyed Diver could be a top-tier card
At this point, it is too late to divert attackers to it, making it survive the onslaught and kill a big threat that was heading your way
Whenever chaos ensues, choose up to one target creature you control and up to one target creature an opponent controls
Since Gogo can copy both activated and triggered abilities, the applications this card has are endless