bladeward's threat benefits are apparently actually pretty marginal. If you want a balance between avoidance and threat, I'd go with mongoose, though personally I think threat from proper rotation/talents are more than enough and I prefer the higher avoidance of either bladeward or more EHP from blood draining (blood draining is currently my favorite, I think it's law or something right now that I'm the general EHP slut in these parts now =P ).
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