Amazingly Bad. Shadowstep = bad spec. What's the point of getting Imp BS AND Imp SS? You should not be getting more than 5 points in the 1st row of combat. Ghostly Strike = no. A PvP sub build w/o initiative? Ambush all around sucks unless the you have to finish off a guy w/ like 10% hp. No ruthlessness or relentless strikes? Come on...PvP is about sustainable burst damage, and no talents in those will hurt you...This spec pretty much sucks, no offense.