Gaiman and Thomas are hardly alone, howeverthe entirety of European Christian art history depicts this the same way they do, rendering the scene far less strange than ancient Jewish authors intended
Kozilek's Command offers multiple options, primarily creature removal and an additional benefit like drawing cards, exiling cards from graveyards, creating chump-blocking Eldrazi Spawn for fodder, or casting it for as little as 5 mana (low for this deck, of course), which is a big advantage for future turns
You are almost never casting Zegana to an empty board, and when you are, you can still draw a minimum of two cards on arrival
This iteration of Mirabel costs six ink, which can be a bit high, but does have a shift cost of four, making it a bit faster to power her power
A relatively ubiquitous response from the MTG community has been heard regarding the latest Warhammer Commander deck spoilers: these are way better than anyone anticipated