This post is a bit late, but that has the benefit that I have testing results with a number of these cards, so you can get my initial impressions
Caesar leans into making a lot of little creatures fast taking advantage of Anim Pakal, Myrel, and tried and true Darien and really showcases on blacks desire for sacrifice and reds need for Burn
While there are times when it could be a double-edged sword, Solemnity also stops things like poison counters from adding up, keeping you alive in other ways as well
Each of these cards offers a repeatable sacrifice effect and strong benefits for using it, just like Hearthhull
The poster child for this was of course Arc-Slogger
A Quick Nod to Multiverse Legends Multiverse Legends This article is focused on March of the Machine , but I can't simply ignore the number one, most valuable (non-foil) card that could be opened from a draft booster pack of the set