They give you lots of deckbuilding flexibility because they work well in nearly every type of deck
You can also save on Universes Beyond sets from previous years, including Fallout, Lord of the Rings, Doctor Who, and Assassin's Creed
Its face commander Kasla, the Broken Halo, has convoke itself, which helps to discount around the commander tax while also giving you control of your top deck while drawing cards when cards with convoke are cast
Whenever he enters or transforms, he grants a creature the saboteur ability, allowing you to draw a card whenever that creature deals combat damage to a player
Eight mana is a lot of course, but you only need one or two permanents with landfall abilities for this to be completely gross
This provides opportunities to double up on various enter-the-battlefield or triggered effects