My brother plays a Mono-Black standard-format deck against me often. He has some big threats in there like Phyrexian Obliterator, Sheoldred, Whispering One and Lashwrithe as well as many cards with phyrexian mana to fuel his rage extractors. Smaller creatures I see all the time are Porcelain Legionnaire and Vault Skirge. In addition to that he has some discard spells for control. I don't have his exact deck list but that's what I am facing all the time.
The main idea is to stall me as long as he needs to get his threats out and overwhelm me in the end. This works really well against most of my decks and compete almost on even ground against my strong decks like "elves", "tempered steel" and "solar flare". His weakest match up at the moment is against my GW-Token deck, similar to this one, except that I have 4 Oblivion Rings in the main deck and no Timely Reinforcements.
What should he put into his sideboard to be able to compete against this deck? I would suggest some Ghost Quarters to deal with Gavony Township but this still leaves him with the problem of Shrine of Loyal Legions, Intangible Virtue and Elspeth Tirel which he usually has no real answer to. Especially when I use my Oblivion Rings on his threats it is game over.
Which Mono-Black or Phyrexian-Mana spells can address this problem in Standard (Scars - Innistrad - M12)?