Blue mages love transforming creatures into something else, as evidenced by Ravenform
This creates a genuine deckbuilding decision that I find interesting: is this Game Changer worth the bracket tax
those cards and abilities most unknown or untested and therefore furthest from our comfort zone
Like most Magic: The Gathering cards, the value of Maelstrom Wanderer depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Eternal Masters)
Jeskai Flashback: Jeskai Flashback seems like it can be upgraded into a reasonable control deck, although it comes with a lot of risk: if your opponents play graveyard hate (and most experienced Commander players have learned that you should try to fit at least some into every deck), you could get locked out of the game altogether
This also extends to the land bases being far better and having less basics in them