This card will work best with commanders that incentivize you to go wide and make tokens, and you can cast a commander, become the monarch, and equip the Crown to a creature in the same turn
I think we all know which deck that is
There's also the tiny problem of this costing seven mana, all of it colored, but the combination of both winning the long game and keeping you alive to see it makes seven feel cheap, and there's enough behind this card that there is no need to worry about following it up with another copy unless your opponent can fire one back at you
Crew 2 Starting with the player whose turn it is, each player in turn order chooses two nontoken, non-Vehicle creatures they control, then all the creatures chosen by all players are exiled at the same time
Mobilized District gives Mono-White and Azorius Aggro a good excuse to increase their land count
The bad news is, it isn't always useful, and this card is pretty bad apart from that