[card]Barrage[/card][card]Troll Unguent[/card][card]Sharpen Daggers[/card][card]Critical Agility[/card][card]Way of the Master[/card][card]favorable winds[/card][card]Critical Eye[/card]
You can play around with this for a general premise. A lot of people scoff at the critical barrage builds but when I don't want to be in the fray mobbed by nasties I throw on my sundering bow and bust this out.
Basically I can keep up all enchants and skills as well and spam barrage/bleeding without worrying about my energy. I've tried adding "Dodge This!" but I'm not sure there is synergy with barrage. Also Poison Tip Signet can be added to spread poison to a single target at a time while you aoe bleed, just switch targets around and you'll spread poison too, which is amazing.
Certainly I'm not an Ele, but spreading effects and doing from 30-100 damage averaging around 60ish per 1 second recharge, to 6 targets, adding poison, every 6 second recharge, and not needing to worry about energy is pretty sweet, I find it favorable because it keeps the monks off my back as well.
You can switch in some interrupts too, if you need, switch out what you feel you won't need that run, like favorable winds if you're going to be mowing through faster than you can recast it.
IAS and Winds faster arrow speed make it insanely fast with a longbow or flatbow.
But since you wanted daggers, I'd go with
http://www.pvxwiki.com/wiki/Build:A/...Blossom_Farmer
http://www.pvxwiki.com/wiki/Build:A/any_PvE_Assaulter