I'd say you should use Doom Blade , Go for the Throat , or Victim of Night over card:Geth's Verdict in the mainboard, then put the verdict in the sideboard against hexproof or indestuctible. I like how you made a competitive mono-black infect deck, and could you check out my deck, deck:reanimation-domination? +1
Oh, and maybe take out the specters for a couple more skithiryx
desperately want to squeeze Phyrexian Obliterator his sexiness cant be denied
maybe play some Fulminator mage, just so when you hvae to sack you can pop one of their lands?
really changed the deck alot, sideboard is because reanimator or dredge stomps me pretty hard. The Abyss for maverick decks or U/R delver, or basically any aggro or creature heavy deck. Pithing Needle is mainly for Stoneforge Mystic, Jace, the Mind Sculptor and Elspeth, Knight-Errant