The best thing I could manage was the following build, for an area filled with stance using enemy Rangers (the Naga Rangers), but it still kinda of sucks...If someone has a better build using this skill, I would be happy to see it.
Attributes
Daggers Mastery 13 (10+2+1)
Critical Strikes 13 (11+2)
Deadly Arts 11 (10+1)
Desperate Strike (Lead Attack) - since it has a low recharge and low energy cost, plus it's not that uncommon for me to be below 76% of health.
Wild Strike (Off Hand Attack) - low recharge and energy, breaks stances (despite the HUGE drawback that any stance worth stopping will just make this attack miss, but there's a counter below).
Repeating Strike (Off Hand Attack) - so I have something to do with Way of the Empty Palm. Does very little damage, though.
Twisting Fangs (Double Attack) - again, to use with Way of the Empty Palm. Has decent recharge, so I may use it as finishing attack after a Repeating Strike series.
Critical Eye (Skill) - to help with the damage done by Repeating Strike.
Expose Defenses (Hex) - lasts 8 seconds, with 10 seconds recharge, and allows me to use Wild Strike (so the rest of the party can strike that enemy). I wanted at least one more Deadly Arts skill to justify the attribute points there, too.
Way of the Empty Palm - the focus of this build, lasts only 16 seconds, with a 25 seconds recharge.
So the result is a very low damage build, with redundancy on energy management, that could be done in many better ways than using WotEP. Does anyone know how to use this skill?

Erasculio