If youre after singles, then as ever, we have you covered
Both Jared Carthalion, True Heir, and Queen Marchesa make great commanders for a Monarch deck, providing solid bonuses when you are and arent the Monarch, respectively
Almost every Ragavan, Nimble Pilferer deck plays the two-mana sorcery alongside it, as the more mana you can create, the better Iteration is as it is not being forced to take lands from it/having the mana to be able to cast any card you hit makes Iteration closer to a two-mana spell that draws two of the top three cards, which is utterly broken
The only downside to the Conqueror is, if you get to go wide fast, youll likely become public enemy number one
Since Taekos ability has a blue and black hybrid mana cost to activate it, you can run Taeko with all the best Ninja creatures since theyre found in those colors
Moreover, special treatments and promo versions create different tiers of scarcity for the same card