Evolving Wilds, Terramorphic Expanse, and Foreboding Landscape work nicely with the Panorama lands from Shards of Alara serve as examples of lands that work as fetches
In multicolor decks, black typically plays a support color role offering creature removal to colors that dont have access to it like blue and green
Still, even without the energy use Im giving it serious consideration for my Feather the Redeemed blink/burn deck
Tack on flying and undying and you have an expensive, but viable threat that can destroy people if unchallenged and unchecked
And, of those four precons, the best one by far was Necron Dynasties , a mono-black precon headed by Szarekh, the Silent KingSzarekh, the Silent King