I have played a human, drow, and two felar into the hero ranges recently with assassinate. I found that I could assassinate with Zridv much more readily than with Mryz or Lerz. I don't think it is much of a difference, but I think that int might play a factor. The only people who really know are the IMMS, unless you have the code and understand it. Why wouldn't a higher int person be able to stalk more effectively? I certainly know that I don't have the answers. I think there are a lot of factors in assassinate. I do think that if i make another assassin they will have to be evil. You just have a lot more targets. :) I did think that I was a better fighter with the felars as far as damage output. I thought Zridv was better for taking blows, but I think one of my edges helped with that.