Competetive Grixis in Modern

Now that we have Khans of Tarkir, we have five new fetch lands in modern. Although many would argue this means almost nothing for the format, since the previous five Zendikar fetch could work almost as effectively for any color combination. I believe Grixis is very happy to have the new fetch lands. A spine black grixis deck was pretty difficult to play before, or at least pained your life total too much. Now Polluted Delta and Bloodstained Mire smooth out the deck quiet nicely. Here is my decklist: http://deckbox.org/sets/826527
Got second place with it at Monday Night Modern, lost to UR Aggro in the finals.
Any suggestions would be greatly appreciated.