Your commander needs to be the same type declared with Umori, the Collector, so youll most often find it companioned alongside all-creature decks, though enchantment creature or artifact creature commanders open other possibilities
Weird family metaphors aside, when should you play 18 lands over 17
Drawing 6, 9, or even 12 extra cards by turn 3 or 4 allowed Blue to simply overwhelm opponents with resources
Speaking of popular uncommon commanders, I'd now like to highlight two others
Now you may be asking yourself, why would I want Kardur, who wants my opponents to attack each other with as many creatures as possible, to lead a deck if Im just going to kill all my opponents creatures
This card will shine most prominently in non-singleton formats like Explorer, allowing the player to run multiple copies of Fog in their deck, recurring the effect as many times as they can cast copies of the card