Maximize your devotion and rely on gray merchant. -3 child of night and an ob nixilis for 4 Gatekeeper of Malakir . - 1-4 swamps and add 1-4 Nykthos, Shrine to Nyx . murder can easily be Vendetta in this deck or upgraded to consuming vapors. - 1 ob, -2 leeches for 3 Geralf's Messenger to max devotion. You can also include Phyrexian Arena for card draw.

That's good stuff, I have to say. Thank you, buddy.

i think you should switch Murder with Hero's Downfall and also you should add (if you can get them) x4 Phyrexian Obliterator

How would you go about adding Phyrexian Obliterator?

I also am a fan of mono black. I think this is a very nice deck. Everything seems to balance out very nicely.

great devotion build strong threats with a clean curve +1!

YES! This is awesome +1!I play a similiar casual deck Korlash's Krew : ) if ya care to take a peek.

Is Cabal Coffers legal in modern? If so you should include it.

have you considered Demigod of Revenge?

I have considered many cards out of Lorwyn, and it's sometimes hard to choose.

Should cut back on the Urborg, Tomb of Yawgmoth since you don't really need the fixing. I seems like it will help your opponent out more than you.

Need it in the beginning for a turn three Nykthos, but perhaps I'll reduce it down to two.

Love black devotion with Gary!

My only suggestion is to replace the Surgical Extractions with removal - Fatal Push say.