I wont lean into other themes unless necessary
Still, for anyone interested in playing the game, the decks are worthwhile
Artifacts are a very popular archetype, but they are also historically colorless, so a four color general seemed like more of a hindrance in 2016, whereas the proliferation of colored artifacts following War of the Spark meant that Breya allowed you to take on new cards in ways that Bosh, Iron Golem and Memnarch would not have allowed
Black has always had its share of powerful cards throughout MTGs history, be it powerful Alpha cards like Dark Ritual and Demonic Tutor or more recent cards like Grief and Archon of Cruelty
Maybe if a way to cheat it out comes along we could see it, but otherwise, I highly doubt it
Anje also works as an instant-speed sacrifice outlet, letting you sacrifice a creature or Blood token to make each opponent lose two life and you gain two