Today I’ll be going over General Vezax. This fight is easy for most appropriately geared raid groups, and aside from one twisted mechanic, is basically a low risk tank and spank.
Your job as a hunter is simple. You stand in a large circle around the boss, avoid being close to people who get the mark of the faceless debuff, take absolutely no damage, and attack. The hard part is that the only way to regain mana is aspect of the viper, and even that is half as effective as normal: you only get mana back from shots, not the standard 4% per 3 seconds.
Lets go over taking no damage. The kind general places his aura of despair on everyone, which means that the healers are going to have their hands full with the tank. This guy hits hard, and periodically tries to squish the tank. Also, he has absolutely no unavoidable raid damage. He fires shadow crash missiles at you, but they take a while to land and you get a warning from deadly boss mods. If you get hit, you take damage and get blown around. Don’t cause a wipe by forcing your healers to top you off because you didn’t go far enough. Get used to the range of these missiles- the trash on the way in fires them too. Also, use your self heals if you have them.
The mana regen mechanic in this fight is not for us- let the healers and casters go stand in puddles. Most raid groups require hunters to take care of themselves and not add any healing overhead to an already healing intensive fight. [Edit 15 July, 1009: The aura left behind by the crash increases magical damage, which includes at least explosive shot and arcane shot. It also reduces your shot cost. If it's feasible, try to stand in one as much as possible, bearing in mind that if you or someone around you gets the mark of the faceless debuff, every tick heals the boss for either 50,000 or 100,000 health. If you get it, disengage. If someone else does, get out of range until they clear the crash AOE.]
Now, let’s go over your rotation. Standard rotation is certainly effective [Edit 15 July, 1009: when you're in a crash AOE], however it’s very important to not let your serpent sting expire. It’s one of your most expensive shots, mana wise. [Edit 15 July, 1009: When you do not have a crash available], I was playing around with leaving arcane shot out of my rotation. I left aimed shot in because it contributes toward the bleed damage from piercing shots but if you have a bit of armor pen, steady shots are going to be almost as much damage as arcane shot, and you can keep them up longer before going into viper. This fight is all about damage per mana.
When you’re in viper, each shot generates a little over 3% of your base total mana, but does half damage. Now, when do we use viper? How long? First thing, do not use it when you pop rapid fire. Save your rapid fire for your heroism/bloodlust so you can get the highest damage per mana from it.
Just before you are low enough that some of your shots are greyed out, switch to viper. Personally, while we’re in the middle of the fight, I stay in viper long enough to fuel another 30 seconds of full throttle DPS. I try to ensure that I’ll have enough mana for 45 seconds once we get to the execute range (20% for kill shot) and then I hope I predicted well so I end the fight with absolutely no mana. If I screw up and have to switch to viper while we’re in execute range, I take advantage of the fact that aspects are on a separate cooldown and switch out briefly to fire my kill shot and chimera shot before going back in and doing steady shots.
That’s the Vezax fight! Enjoy, and pick my logic to pieces here in the comments!