The only thing holding this deck back from being an 8 is that its generally a little bit slower than other focused strategies, and has a built-in weakness so it doesnt totally dominate other decks just below the cEDH level
Attacks or Conditions The two lines underneath Poison Dart Frogs ability describe its attacks
Yorion, Sky Nomad and Kolvori working side-by-side deserves examination
The exiled card of Expressive Iteration may often be a non-optimal play and requires either a very low curve to fully capitalize on it exactly like Grixis Shadow or UR Murktide, or an ongoing finding of additional land drops
???: Aww, isn't he cute when he's thinking
As were in Izzet, its generally a lot to ask when it comes to an encore. Izzet doesnt bounce back as well as other big mana spell decks, so youll want to put on a nice buildup to the main event, and hold counterspell backup to make sure it goes off without a hitch