Spell rotation on trash?Follow

1) On trash that I know only lasts 15 seconds or less, I use VT as my only DoT and go to town with MB and Mindflay. On trash with more hp, I'll throw up SW:P and VE as well. This is in raids. In 5-mans, I put VT on everything but usually don't use SW:P on most trash because things don't last long enough in 5-mans other than the bosses for the most part. This is with a well geared group, if your group is weaker then you want to do as much damage as you can :)

2) In 5-mans no, you should never run out of mana. Pulls and boss fights don't last long enough, and if you do start to get low you can just use your shadow fiend and that should take care of you.

In raids though, especially when you first start the Kara boss fights you will find that we run out of mana pretty quickly. You will get used to using mana potions every cooldown and your shadowfiend must be timed right to get the best use out of it.

3) I stacked spirit while leveling up until the early 50s. I found it helped immensely as I never had to drink. Just don't neglect int and make sure you have enough stam to prevent death. :) Once you get into the 50s though you can start finding more gear with +dmg, and once you get into outlands you will find much less spirit on gear. But it's ok, with the added +dmg you kill things faster which is always good.