My criteria for the following list includes how useful the commander may be in any individual case, how directly convenient it is for storm strategies, or how fun it can be to play
Then lastly, the third rule is met by Fidraulis Harmonia and Dogmatika Maximus , since both are so easily summoned to enable the second effect of Mind Shuffle
If it is 6, destroy all Level 6 and higher monsters on the field
Its a good fit in lifegain/life drain decks, zombie typal decks, or even Bloomburrow -inspired bat decks that care about gaining and losing life
Bolass Citadel For: Bolass Citadel is something like a Ad Nauseum on steroids, letting you exchange your life for greatness, but in this case you get to exchange your life for CASTING the card involved
The best comparison is the rare allied cycling land cycle from Amonkhet, which for any deck that could run them gave a good fetchland target