Originally Posted by
gherkin
I disagree with just about everyone in this thread. 3.1.0 made destruction a viable leveling spec, especially at level 40. Affliction is still a good spec of course, but I wouldn't be so quick to dismiss Destruction these days. If the man wants to level this way, let him. It's not that bad anymore.
1) Conflag is a great spell to cast now
2) Soul Leech is on par with Siphon Life since its stamina based instead of spell power based (stamina easier to get at 40 than spell power)
3) 10% mana reduction from talents makes the cost-effectiveness on par with Affliction at the same level.
Use your succubus and double target foes. Have her offtank (she'll live long enough for you to regain aggro, turn off Seduction and Soothing Kiss). Immolate both, Shadowbolt one to death, Conflag & Shadowbolt the other. Use corruption and agony if this doesn't kill things fast enough. Shadowfury to interrupt casts.
Big baddie? Voidwalker + health funnel for... 40 seconds or so, then blow the crap out of him.