Shadow Warrior Buildhttp://us.battle.net/d3/en/calculator/demon-hunter#bYeSUk!ceW!bbYZbY
-Shadow Power (Cost reduction): This build trys to keep up Shadow Power for every battle, thus the cost efficiency rune.
-Preparation (Increased max disc): Same as above, the 18 disc increase applies to the full cooldown time, so at 0 cost, if you spam this for every possible cooldown you have increased your disc pool from 30 to 48 permanently.
-Evasive Fire (0 disc cost for backflip): An escape skill that will cost 0 disc and generate hatred? Neccesary for this build to work.
-Entangling Shot (9 targets slowed): Given a weaker escape skill, I need a strong snare.
-Hungering Arrow (95% pierce): Must have in almost any build (unless it's weaker than it appears).
-Multishot (330% damage/Disc Regen): This one I'm on the fence about. You can go two ways with this build. If you want to keep shadow power up 100% of the time, then rune it to generate discipline. But then you've lost your big AoE damage and you just spam hungering and that's it. Granted....that might be enough, and in a way hungering will be AoE once you get a load of arrows out there flying around....Luckily with Shadow Power up 100% of the time, that wont take long.
Passives: Cull the weak, Perfectionist, Archery
Concept: With a permanent 48 discipline pool and a Shadow Power cost of 10.4 disc, you can keep Shadow Power up for long periods of time, perhaps permanently depending on regen. Open entangling, spam multishot until you are OOH, then spam Hungering, Evasive and Entangling again if needed, repeat.