Here is the Deck List if you or anyone else is interested. I added in a couple of Unearthed Secrets today to help with the card draw as obviously the key thing is getting as many improvements out as quickly as possible and I found myself running out of cards to play sometimes. The items seem to be working for me just fine, but I don't have any of the flashy high end items so there might be better choices available. The Dominator helm has saved my bacon on more than one occasion, so I find it a good option to have available.
Basically after the first round, I look to see which lane Prellex will be likely to survive in, then either ramp that lane to high heaven or use her as a distraction while I beef up somewhere else.
Indeed, part of the reason this deck works so well is that not many people are rocking Raze/DD etc.