There are some talents from classes that make them do less damage in an absolute sense during p3; rogues have Prey on the Weak, which means their crit rate drops by some 20% during P3. I'm not aware of other abilities, but I would imagine there are a couple elsewhere.

Just got Insanity 25 yesterday. Tyrian brings out many great points about the "difference" felt by the raid of the encounter in phase 3. The only people who can possibly feel the encounter is any different are the healers, no one else.

However, I have to disagree with Tyrian that constant call outs by the healers on vent might be more disruptive, and fear inducing as people's voices tend to change (more stressed) as the fight gets more intense.

It has been my guild's experience that a major key to success on phase 3 as well as overcoming the natural fear of sitting at 500-2k hp, is to exercise very strict and clear vent discipline. Everyone has their roles, they should know what to do. Do not be a hero, just do your own job.

As we use a single add tank strategy (with 3 rogues), the only consistent vent call out was the impending arrival of adds, to remind our rogues and add tank to pick up their respective assignments.

The only other vital regular call out that I can think any other guild might want to use, would be "PC Change Incoming" 1-2sec before the timer. There's no need for any other kind of conversation to occur on ventrilo, it usually does more harm than good, psychologically.

If any PC deaths occur, it should be pretty easy to figure out which healer was assign to heal that, and deal with it appropriately after the fight/attempt. Likewise, the cause of any leeching swarm death can easily be identified with a missing raid heal (JoL, Healing stream etc.), and the offender can be dealt later.

DPS wise, what could be done, is to verbally count or clock how long on average it takes to aoe down a typical add wave in phase 1. For us it's about 9-10sec, after the 1st add arrives into the raid. In phase 3, a raid leader can slowly calmly call count out the timing as well, to gauge the difference in timing taken to aoe adds in phase 3 as compared to phase 1. If the timing difference between phase 1 and 3 differs clearly, it would imply that there are dpsers who have lost their cool and are ignoring to aoe adds.

Summary: Phase 3 is the same fight for tanks & dps, they should do almost absolutely the same thing (aside from using CDs to counter initial PC tick). Healers just have spam heal their assigned mark/party everytime it pops on their raid frame. P3 is extremely psychological.

Yeah, this will be pretty subjective for each guild. I keep control in raids by calmy and methodically talking people through whats happening. But for other guilds the best mantra will indeed be silence and a stricter 'less is more' attitude with regards to vent chatter in P3.

We did try a few attempts with all healers in a separate vent channel during P3 on vent. However, we wanted DPS to also hear the calls and be better able to pot/cloak/iceblock on PC switches - and I felt DPS were missing important calls when healers weren't present to announce whats happening. Certainly will be a subjective issue between guilds to decide how best to handle.

For passive healing in phase three, we learned the fight by including as much passive healing as possible (due to people possibly dieing and thus losing a passive healer). I'm scared of experimentation now.

Currently, we use a single Healing Stream totem (at 500 every 2 seconds) to keep up the healers.

For melee, we use JoL and Imp LotP. I worry that this is too much healing.

For ranged, we have a Shadow Priest and an Elemental/Enhancement Shaman to keep them up.

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What are people using for passive healing for their melee groups and the non-healer groups?

We count HL glyph as part of our passive-healing as well: two pallies spamming HL = roughly 10 people getting healed every ~1.2 seconds or so. Also DKs in Blood Presence largely require no healing.

For the healers, phase 3 is a perfect avoidance fight. Properly geared, none of the healing assignments are difficult to keep up with individually, but if they fall behind on one someone is likely to die somewhere.

It was already covered that Leeching Swarm is a huge portion of the damage on the tanks in phase 3, and it's a lot more effective to use NR gear and buffs to cut out huge portions of the leeching swarm damage than it is to use typical avoidance to cut down on the melee damage. As a bonus, I'm fairly certain that resisted swarm damage doesn't heal him, so you're getting bonus DPS out of the nature resist.

Besides the auras, I'd never use nature (or cold) resist on anyone other than the tanks.

It was stated earlier in this thread that damage reduction abilities didn't work on leeching swarm. Does anyone know if the 2% magic damage reduction meta works though? We finally got the encounter, but I'm trying to gear up better to make P3 MT healing less spiky.

For passive healing in phase 3, a resto shaman HS totem is slightly more than necessary. Glyphing it would be overkill. Our elemental shamans totem wasn't ticking for enough, but with a glyph it averages about 400 which is just perfect. As far as i know no one died from just leech under the effect of his totem. The enhancement shaman totem was too weak on it's own even with the glyph, so we usually pair him with a shadowpriest to keep a group up. Two shadowpriests also work fine, either of these combinations is a bit more than you need, but since all of these effects are somewhat random, it's better to err on the side of caution. What wipes people is too many people dying, not too much healing. With 25 people alive it seems impossible to hit the enrage timer. For melee, we have both JoL and imp LotP. JoL would be enough on it's own, so you could have your ferals specc out of imp LotP if you're not worried on it's effect on tank healing.

Only the 10% damage is lost, not the armor pen. It would be pretty ridiculous for a DK to not respec unholy for this fight though, either for learning initially or for trying for better tributes. Unholy is insanely good on this fight due to the way wandering plague works, especially with 4 piece T9.

We just use JoL. Our feral MT specced out of imp LotP.
The sweet spot you want to hit is passive healing just covering the leech. The leech is capped at the low end though (to 250 IIRC). With a NR totem this is reduced to 225 health lost every second. As long as your passive healing covers this loss, no one dies from leeching swarm. Ever.

JoL is easily enough for this task. Having additional Imp LotP is overheal, which in effect is lost DPS on Anub. Remember that every heal to your raid equals a higher heal on Anub. You dont want unnecessary heals on Anub.

Why use JoL and not imp LotP?
First, JoL heals for more. Second: Granularity issues. LotP heals for 4% of max health (should be around 1k heal) every 6 seconds. IF you crit (this is the crux). Worst case scenario could easily be that you get no heal at all by LotP in a time frame of 10 seconds, or more. In 10 seconds you lose a minimum of 2250 HP. As you see, impr LoTP is just not enough heal and in too big packages.

Two direct damage groups (melees, ranged who do single target damage on Anub all the time!) get healed by JoL.
The other 3 get healed by healing stream and SPs. Depends for how much these heal in your raid, asisst weak groups with an occasional holy nova.

That should be enough. Icreasing your passive heal on the raid is detrimental to this encounter. It does not provide more safety against leech as it is not really needed. And it will not save the ones affected from Penetrating Cold, no matter how high you stack your passive healing, they WILL require special treatment.

On another matter: Does everyone divide your damage in explicit AE phases on the adds followed with single target damage phases on Anub? We never did this. Everyone in the raid stays on Anub but uses abilities which also hit the adds (cleave, WW, ...). If someone has no such ability he stays on Anub. We just kill the add packs in time before the next pack arrives. No need to hurry. If we are late we do switch to the adds to finish them off. To mee this seems less damge lost on Anub as Cleave is a very minor single target DPS loss and WW is in the standard rotation (speaking from a warrior perspective here).

We handle it the same way, with a 3 tank strategy. Our packs die just in time so before the next one arrive. Sometimes, if one tank has a problem positioning, one side dies earlier than the other, but that's no big deal.
If both tanks do perfect positioning right from the start, we even have single DPS time on Anub, but that's not really needed.

The problem with that is that you don't know who will be healed, it might just aswell be healing people who doesn't need to be healed and let others die.
We went away from using HL glyph at all on anub and just have the maintank beaconed and only spam the offtank while the adds are on him and let him drop down and only heal him up again right before the new add wave comes to reduce the healing on Anub.

Yeah, this seems like something that would depend a lot on whether you use two or three tanks. With a single add tank strategy we've found it better to kill the add waves as soon as possible to reduce the risk of a tank gib or a shadowstrike getting off. (We're also using a CD rotation on him, so it's ideal to get the adds down before the CD wears off.) We can afford being slightly less efficient with our damage because of having an additional DPSer. Regardless of strategy though the enrage timer really should be a non-issue with a good strategy to minimize Anub's healing. On our first kill we were a good minute and a half ahead.

Frankly, to help vent stay clear of healer chatter during P3, simply assign raid icons to healers instead of having them call out who they are healing.
All of the boss mods mark PC with raid icons, thus it's very simple to have grid showing raid icons and healing accordingly.

My guild is currently working on Anub 25 hard using the 1 OT strategy and we're having problems with the burrower's initial agroo on the OT. We've tried using a paladin with Righteous Fury past the frost patch(near the MT) to pull agroo but our priests or our Ret pally are generating more agroo than him, making alot of problems for our warrior OT to place the adds in front of him. This usually leads to the tank's death or alot of distractions on vent allowing the adds to cast a shadow strike.

We currently have 1 or 2 (I don't know exactly) hunters MDing the adds and the rogues using tricks when the mobs get near Anub. Our AoE looks more than enough to down the adds before the next wave, even though a few times 1 add is left alive, probably to people not finishing the mob. Is there any other tips to help this portion of the fight?

Also, is there any better or "right" way to handle the white beatles in phase 2?

Tell your priest to start smite spamming Anub'arak so your Holy Pally can do more healing. But seriously, your Rogues and Hunters should be doing a better job. Have your Warrior pick up one add himself and assign one rogue to each add. Ideally you'd have 2 or 3 rogues.

(Our 3 healing Priests frequently do 600-800k damage, by the way).

I have done several searches on this topic site-wide as well as forum/thread-wide and have run into threads and topics that discuss tank avoidance and Rogue information. Since my question pertains to Heroic 25 Anub, I figured this was the best place to ask.

For interrupting the adds, we typically either use me (Holy Wrath) or a Warlock (Shadowfury), this has worked well for us, though sometimes one of the adds will go ahead and Shadowstrike anyway, even though they've been hit with either my Holy Wrath or with Shadowfury; basically, 3 will be stunned, one will take damage, not be stunned, and go kill someone.

The obvious answer to me is that someone is using a single target stun, or a spell that shares DR's with Holy Wrath and Shadowfury. I have been looking for a list or table that lists the different categories and which abilities share each category, but my searches have not been successful.

Do Silence effects (Silencing Shot, for example) effect the DR on Holy Wrath's or Shadowfury's stun mechanic? That is the only thing that anyone in the raid is willing to admit to doing to any of the mobs; I tried looking in the Hunter forum but that particular topic hadn't been breached as far as I was able to tell using the Search function.

Does anyone know this information, or know where I can find it? Heck, even supplying me with a valid search topic (I can only think of so many terms to find this info) would be most helpful.

Thanks in advance.

Nothing comes to mind but a good option would be to scour the arena junkies for DR overlap.

We had a similar issue a little while ago, due to a Warlock's Felguard intercepting one of the adds when they got in range (which they will do in any multi-mob combat, its mildly amusing to watch). The stun is only ~1sec, but it is most definately a 'controlled' stun, which are on seperate DRs to random stuns.

TSplodey alludes to it, but there's 3 categories of stuns. Each of these categories share dr (diminishing returns) with themselves, so if 2 stuns of the same category are used within 15 seconds the second one will only last for half the duration.

There are controlled stuns (holy wrath, shockwave, HoJ, Kidney shot etc etc). These are the ones that are used to interrupt, so this will be where you run into dr problems. As the name suggests, if you are able to specify when the stun happens, it will be in this category and cause DR on your interrupts.

Less important are uncontrolled stuns (old mace stun, old tnt stun, SoJ stun) which won't have any effect on your interrupts. Finally the two 'opener' stuns (pounce and cheapshot) are in their own category.

Check out this thread by Shadowed:
Diminishing return information wanted

Spirit Wolves Bash is another one that can easily slip under the radar, if you're using an Enhancement Shaman.