Ultimate Masters is more of a return to the glory days of Masters sets
The decks are more consistent, with more card advantage, and youre also effectively playing against three people trying to stop you
A lot of the fun involves experimenting with cards I don't typically lean on in my Commander builds because they fit a particular story moment, item, or character interaction as opposed to being "best in class" for a deck archetype
This broadens the number of commanders that can be made quite significantly but I cant think of any legendary Vehicle out there that would work better as a commander instead of being part of the 99
A much bigger chunk of the set is dedicated to new-to- Arena reprints from sets like Modern Horizons and Modern Horizons 2
Most sacrifice outlets want you to sacrifice cheap tokens, but this black human wizard encourages getting rid of the biggest boys for cards and life, and I enjoy the dynamic