Was planning on running this over the weekend, but can't get on Guild Wars at the moment . As such I'm not certain about what people are running at the moment, but I reckon this could take care of most teams.
It's similar to the hex builds that people run in GvG's, basically you spam hexes about, while the Dervishes pressure. Signet of Humility is for Divert/Expel or anything else that might cause problems. I'd love to fit Disrupting Dagger or Distracting Blow on the Dervs, but their bars are pretty packed already.