Exchange specifically is interesting, as the drawback of not being able to attack with the monster in the same turn is superfluous, since this drawback already exists on every toon monster
The big design challenge for Universes Beyond: Fallout is how to adapt such a sprawling, storied franchise into just four Commander precons
However, it can make the game more enjoyable and visually appealing
Abyss Soldier+Sinister Serpent can be a key interaction in the deck that not only helps move cards out of the way so that attacks get through without issue, but it also opens up high damage output potential
But Clues themselves are undersupported as a main mechanic, and playing cards to take advantage of them (or even commander damage in UB) means playing cards that are pretty bad
World Shaper Wizards has been giving Jund-lovers some real treats recently, and when Edge of Eternities came out, it was quickly clear that the red/black/green deck stood high above its rival