Other than that, there are some sweet mana boosting cards that are optimal for mono black in the form of Cabal Coffers, Magus of the Coffers (in combo with Urborg, Tomb of Yawgmoth if you plan on running lots of non-basics, but it might be a bit expensive) and Nirkana Revenant/Caged Sun/Extraplanar Lens.
If you're further into the process, post some cards you like/plan to include so that we
can get a better feel about the direction you want to go in
