
Both my druid and priest are now proudly sporting the title 'Of the Nightfall'. That's 10 man Sartharion with all 3 drakes up, widely considered the hardest encounter in the game right now. Each of them ran with a different group - the druid with a caster dps group, the priest with a melee dps group. Both runs were from entirely different perspectives, so I'm going to walk through both.

Caster Group (Tanking perspective)
Our caster group wasn't really optimal, tank-wise. My druid was taking the place of our warrior tank, who was unable to make it that night. But our setup was thus:
Healers: Discipline priest, holy priest, holy paladin
Tanks: Feral druid, feral druid, prot paladin
DPS: Shadow priest, boomkin, elemental shaman, fire mage
We had our main tank pull the dragon to the front left corner, while we ran to the back. I was tanking drakes, so I went and parked my furry butt at Tenebron's landing position. Tenebron landed, I dragged him to position for the first fire wall, then we popped heroism and started blowing him up.
This was the first problem we encountered. The DPS all vastly outgeared my druid, and this stage depended on me being able to frontload enough threat to hold off them. I ended up putting on threat gear, and blowing Beserk + trinkets as soon as I got my paws on Tenebron.
After the second flame wall, I moved Tenebron to Shadron's landing position. Shadron would land, and I'd pick her up using a little macro I made for the purpose, that targets Shadron, taunts, then targets Tenebron again, since I literally could not take my focus off Tenebron without losing aggro. I changed my tanking rotation slightly at this point, using swipe instead of lacerate (while still keeping a full lacerate stack on Tenebron). As soon as Tenebron died, I'd move Shadron over to Vesperon's landing spot.
Then came the crucial part. With Shadron, Vesperon and their acolytes up, the raid is hurting themselves fairly badly. The main tank is taking huge breaths. I'm dancing around avoiding void zones and walls, so it's lucky threat is no longer an issue. Dragons are spewing shadow all over my face. This part depends entirely on the healers. For the record, I love my healers. There were a couple of times I dipped really low, and they pulled me back up.
Once Shadron was dead, DPS swaps to Vesperon. I'm not taking the massive hits from double breaths at this point, although the raid is still taking Twilight Torment damage. That meant the healers could take some attention off me and worry a little more about the raid. We could start to stabilize now, the hardest part was pretty much over. As soon as Vesperon died, the paladin healer, myself and the DPS jumped into the portal to take care of the adds.
After the adds were dead, the fight was E-Z MODE. I swapped to kitty and started shredding happily at the boss, while the pally tank continued picking up adds. Kill dragon, collect loot.

Melee Group (Healing perspective)
Our melee team, the second group, got the benefit of better planning since we'd had experience.
Healers: Discipline priest, holy priest, resto druid
Tanks: Feral druid, prot paladin, frost DK
DPS: Unholy DK, enhance shaman, TG warrior, survival hunter
We also had a second pally and a mage sitting outside, to buff us. And we had a rogue instead of the DK for half of the attempts, as they were taking turns.
The main tank got to have the dragon misdirected to his corner, this time. We all ran to the back, and the pally (drake tank) got in position for Tenebron. Because this group was melee, the tank had to move a lot more with Tenebron, to avoid void zones. We'd blow heroism on Tenebron, and have him at about 20% when Shadron landed.
We also couldn't avoid getting a second whelp group, but our DK tank (who did a stellar job, since he's usually a DPS) got very good at picking them up. He kept freezing them all as they spawned. I'm not sure what spell that was, since I don't play a DK, but it was amazing. Once Tenebron died, and the drake tank was moving Shadron, DPS would swap to all the whelps and AOE them into oblivion. They were usually all dead by the time Vesperon touched down.
Then it all came down to the clutch point again. I was healing raid + DK tank, so while Twlight Torment was up I was kept busy. CoH was kept on cooldown, and I used Prayer of Healing more than I've ever used it in a single fight before. I was also required to toss a Guardian Spirit on the main tank during this phase. It took a few attempts to make it through that phase, but once Shadron died it wasn't too bad. The main tank wasn't taking nearly as much damage from flame breaths, and the Disc priest was freed up slightly to drop the occasional shield on the DPS, giving me some breathing room to heal them.
After Vesperon died, we knew we had it. The resto druid, pally and DPS went into the portal to finish up the adds, then came back out to nuke down the fire elementals the DK had been happily gathering. By that point it's a cakewalk. Kill dragon, collect loot, round 2.

Healing or Tanking?
Personally I really enjoy the 3D fight. There's a lot going on, and it's challenging in a way none of the other encounters are. The team matters greatly in the 10-man version, everyone has to pull their weight, and if someone dies it can mean a wipe. I love that you have to work together to pull off the kill. It's an exciting encounter.
I find when tanking it, I get tunnel vision. All of my focus is on the drake, and on the threat meter. I'm so used to flame walls and void zones now, that I'm moving out of them without really thinking about it. I can't break my concentration for fear of losing aggro to Mr Crit Happy Mage. My keyboard gets a beating when I'm tanking.
When I'm healing, I usually help call out fire walls and void zones. I get a bigger picture as a raid healer, as I'm watching what everyone is doing, not just myself. It means I can more accurately assess where we are going wrong, and who's making mistakes, so that we can correct the problem.
I can't say that I prefer healing or tanking on this fight. Both are widely different and are challenging in their own way. I'd prefer to heal it though, since I want the drake for my priest.











