One of if not the best deck in the format is Mono-Black Devotion, having won a ton of premier-level events over the past few months
The flanking mechanics of the world have to be keyworded, while the bushido mechanics are keyworded on a case by case basis
Duneblast Creature removal is going to be vitally important for a deck that isnt going to have a lot of permanents to wave off attackers, and I particularly like finding sweepers that leave Codie intact
For context, a typical development guide that we would make for a Universes Beyond set is probably closer to 120 pages
Jenova is the most valuable player in my own Cleopatra deck, for example, and her open-ended qualifications mean you can run 40 lands and 59 Legendary Creatures of your preference, if you so choose
If I attack again with Felidar Sovereign and my opponent doesnt block it, they take direct damage