This mishmash design is not just for show
For instance, the deck has the Gruul and Golgari bond lands, which come in untapped if you have more than one opponent
Milling cards on entry opens up many deckbuilding options, especially when you build around mechanics like delve or escape
Im also not sure why Zampires are green
We dont have to make Universes Beyond cards that are simple - we just have to pick moments that are recognizable, and theyll be easy for fans to understand. As for how exactly they translate those moments and the world around them into a Magic set, Head Designer Mark Rosewater tells me Magics color pie is robust enough that we have the ability to show heroism and villainy in all five colors. As an example, Rosewater says Spider-Man would be white, blue, and green (although the specific version in the Scene Box above is only those first two)
So if they give five open mana, you can just exile six cards to make sure your opponent wont be able to resolve their spell
