While the set was fantastic, it isn't classified as a Universes Beyond crossover, given the franchise is also owned by Wizards Of The Coast
To that end, you'll find a range of combined stylistic choices like realistically rendered figures with graphic framing elements, characters shown in positions of expertise, a deliberate range of body types, ages, races, and more
This can be huge for ending a game, since you can do it at instant speed post-blocks, or just for the synergies that I listed above
Either way, you want your general to be devastating if left unchecked Engines synergy focused decks look to their commanders to tie the room together, making cards more than the sum of their parts that harmonise into something much bigger
As a bonus, Acid Rain's art shows it destroying not a tree but a statue, making it a flavor fail as well