Momir format could be much better
I like the Momir format, but I believe it needs a more curated list of creatures that could be copied by Momir's ability. For example: there are creatures like Surrak and Dragonclaw that care only for nontoken cretures entering the battlefield, but in the momir format it's not possibile, so their ability is meaningless. The same is true for all the creatures that could search your library for some specific type of card, like Deadeye Quartemaster.
But the worst creatures are the ones that make you lose the match: today I paid 6 mana and got a Demonlord Belzenlok, that milled all my library (because it contains only land cards) and made me lose the game at the beginning of my following turn. Definitely not a good or fun experience...
If you don't have the internal resources to curate a list of meaningful creatures to use in the momir format, I'm pretty sure that many enthousiastic player communities out there would be very willing to help.
Thanks for reading.