I'm going to take a wild shot in the dark here and say that the build, as it stood when the screen shots was taken, was for a R/Mo and included Troll Unguent, Distracting Shot, and Pin Down. Other than that, though... Curse you Witte, you have confounded me once again!
Good luck with the tweaking. I'm seriously looking forward to Ranger solo pwnage in FoW.