The wich doctor is a pure spell caster, even trought it is not a wizard, and not a necromancer it will have the abilities to be follow by lot of creatures like the old druid.
Witch Doctor build
Haunt and Locust Swarm will be the main output of dmg, you can cast these spells on a max of three different targets and they jump to other enemies as the initial enemy dies which leads to a lot of aoe dmg. Spam frogs as your Haunt and Locusts are jumping around, your minions will help keep you safe and add additional dmg as well as with the runes i chose you will be healed by your dogs attacks and haunt which makes the passive blood ritual great cause you use less mana and take dmg but are contently healed by your spells. Horrify ensures that you will not be attacked.
The Fishydoctor
The ‘fishymancer’ from Diablo 2 was a popular build for PvM and will no doubt be making a returns in Diablo 3 in the form of the Witch Doctor.
After careful research using the only information available to me at this time (the diablo 3 builds site, as well as beta videos of the character) I have constructed what I feel is most likely to resemble the initial build of the Fishydoctor in Diablo 3.















