I would recommend:
this: http://db.vanillagaming.org/?talent#ItMb0o
into this: http://db.vanillagaming.org/?talent#ItMb0oZbhh
into this: http://db.vanillagaming.org/?talent#IEMbNR0oVZbhh (you can choose between curse of exhaustion/fel concentration
and end like this: http://db.vanillagaming.org/?talent#IEMbNR0oVZbhAzoxo
The way this spec works is that you:
1. Send in VW towards #1 mob
2. Start dotting #2 mob with agony, corr + immolate then fear it (reapply dots as you need, wand down at 10-15%, keep it feared).
3. Start dotting the #1 mob
(only if you have Howl of Terror) 4. Start dotting the #3 mob and then Howl of Terror it
5. Wand the mobs down, make sure to have drain soul macro and put vw on passive to prevent him KSing your improved mana drain.
6. ????
7. Profit! You now killed 3 mobs and only used about 50% of your mana!
The improved VW is really necessary once in the 30s because it's around here you will start over-aggroing your VW. Also make sure you always have max-rank on its' taunt ability, don't use suffering because it takes too much mana. Your VW will oom from time to time hence the fel intellect talent.
Best of luck!
