Kinda like Wicked Akuba or Nantuko Shade Better than Oona's Prowler because while you are giving them that temptation of discarding I don't think many opponents would take it. Also the shade especially helps you own the board a lot better. Just food for thought. I really like this deck and want to take it to modern.

Try -3Swamp and add 3Cabal Coffers

Cabal Coffers isn't modern legal.

Sorry. But i like the idea of this deck, +1 :D

The Rack and Shrieking Affliction

Ever Consider those?

Oops. nvm. Just read your Updates. My bad. lol

The Rack is very good to pox deck, this deck doesn't need it

Appreciate the suggestions -- I have found Prowler very effective in the deck because either they discard a card (good for me) or they realize what's happening and take 3 (good for two mana). Prowler also flies, which is nice.

I have a hard time with Tron, particularly GR Tron. I just upped to 4x Ghost Quarter, so I'm down to 2x Mutilate, and I don't know that it fits in the side anymore, as I have Vampire Hexmage and Vampire Nighthawk to deal with aggro decks. Any suggestions for two SB slots?

Also, what can I do to make the manabase better? Fetchlands?

This might sound crazy but why not main Ghost Quarter as you can use it on yourself for extra deck filter.Then you can add Tectonic Edge to the board for the tron matchup. Another way you could 'fix' your manabase is to just draw more cards. Dark Confidant and http://static.tappedout.net/concept-cards/dgmsziggas-blood-scrivener_medium.pngBlood Scrivener will do well there.

I appreciate the thoughts -- I don't think you can really GQ yourself though, because that sets you back a turn in terms of land, right? I also tried Dark Confidant but found that Sign in Blood is better because it's more immediate, and I can't hit myself for 8 because I find Tombstalker :)