There were no good answers to a Frenetic Efreet, only answers that worked half the time, so as long as you weren't far enough behind that he was ignorable the Efreet was always effective
Most of these upgrades are going to be focused around making Don Andres thieving dreams come true while adding in a couple of value cards that will come in handy regardless of the situation
However, I had a situation once where I shipped a submission 3 days before expiration of the submission and it completely disappeared from my orders list
With Selesnya being one of the weakest archetypes in this set, its common to splash Frodo Baggins in decks with Great Hall of the Citadel that also contain plenty of legendary creatures
Maelstrom Wanderer The original Temur showstopper, Maelstrom Wanderer still feels like a mic drop whenever it hits the stack
The rest ramp, card advantage, and the colorless staples every EDH deck wants