I know for sure this is right. If your target is at full health and there is 5(6) other targets there have taken dmg, it will take them instead.

I did a little more testing on the WG thing. It's still not very scientific, but it's difficult to get 5 or 6 people to stand still for like 10 minutes. It doesn't seem to be based on proximity, either; a couple people standing next to me wouldn't get it, but a few people just in range would. It also always seemed to land on me if I was the target, even though WG doesn't necessarily need to heal the target. It may be that it's trying to find the optimal targets for Revitalize, although that would be ridiculously hard to test and be pretty subjective. If anybody can extrapolate on that theory, feel free.

LATE EDIT: It seems to try to ignore people who have heals already ticking on them.

We just started pulling heroic LK25 last week, and we're apparently trying out a 5-healer Pal/Pal/Sham/Disc/Tree setup. I still don't really get what trees are supposed to do here.

Our disc priest isn't quite at that spell power threshold yet, so we do get some bubbles breaking to every infest (maybe 3-5 on average?). He's been covering four groups with shields, with me trying to keep one entire group HoT'd completely and trying to time lifeblooms to bloom as infest hits. This has been a huge headache, as I can't seem to do anything but start setting up for the next infest. This is kind of nice I guess, as it buys a few GCDs for the other healers to heal up the people whose bubbles had broken and are in more dire need of a direct heal, but...

Ive read through all the posts a page back or so talking about how to handle LK25H, but I'm still not entirely clear on what we're bringing to the table. Our HoTs just don't tick fast enough or hard enough to do more than buy a second or two for the other healers, and we can only Swiftmend once per infest cycle - Nourish just doesn't seem to cut it.

This week I'm going to try changing my second spec into a Naturalist spec with a glyphed HT to see if that helps any.

Does a glyphed HT hit harder than a Nourish with 2/2 ET, one or two HoTs and the glyph? What glyphs have you all been running? I've been using Swiftmend, Nourish and RR. There wasn't much discussion on that aside from the couple who suggested HT.

The key to healing LK as a resto druid is to stop thinking that you should be at the top of the meters, and start thinking that your hots (RJ/LB/WG) and extra quick nourishes/HT (if glyphed) will help stabilize the tanks and the group that the disc priest can't cover.

In p1, resto druids have one of the best "triage" spells - swiftmend - for a tank that takes an extra hit from an enraged ad or a target that doesn't get healed up quickly enough from infest. Yes, you're limited by its CD, but no other healer has the ability to land a 10k+ heal instantly every 15 seconds.

In the transitions, you can resume your more traditional raid healing role, effectively smoothing over the constant aoe damage.

In p2 again SM becomes incredibly powerful, hots can stabilize a tank during soul reap and you can single-target heal with nourish or HT (glyphed).

In p3, having a resto druid in the raid is incredibly useful, since they can heal on the run. In the frostmourne room, your holy pallies will be forced to use FL or struggle to keep light's grace up, your resto shaman will get 1-2 CH casts off before moving and your disc will be limited by weakened soul. It is here that a resto druid really shines, and becomes an integral part of any kill.

So, if you've only just started working on LK, you might feel useless (and your GM might be inclined to sit you for another healer), but if you play correctly (and forget about meters), once you start making it to p3 you'll understand why a resto druid can be really useful.

Add Power Word Shield to your grid.
Rejuv targets that dont have a shield.
Wild Growth when infest lands.
Nourish. Dont worry about pre hotting the nourish target (wild growth helps with that some).
Pre hot targets that are being siphon lifed.
Your swiftmend should be on cooldown pretty much all fight.
Watch videos from resto druid point of view and see what they do, compare, and adapt.
Tasty Beverage Vs. Heroic: Lich King 25 By Eyece - World of Warcraft Movies
Keep hots on tanks.
Hit rejuv alot in frostmourne room.

Pre lifeblooming is really stupid if you ask me. Your priest should be able to bubble everyone and let you know ahead of time if he cant (pre rejuvs). If the disc priest gets picked up, have another priest divine hymn (see 5:13 in the video).

If its really a problem, get a 6th healer to atleast get past phase 2 and experience the rest of the fight and go from there. At the 30% buff, there is more than enough room for the fight to be 6 healed.

Lifebloom is honestly too short of a hot to be used to counter infest. The posts earlier mentioned Lifebloom when we had much less of a buff than 30% and we were taking the role of a disc priest in 10 mans. I've done the same thing your doing healing one group while a disc priest covered the other 4(and part of mine) and I countered it by keeping a RJ, RG and hitting WG when infest came and then doing Nourishes. This also left time for me to keep some hots on the tanks and swiftmend often. An advantage of having Regrowth on the target is that you only have to do it once every 2 infests if you time it right, and if you cast them right before and when infest is happening(again, timing) it is pretty much just like a Nourish and will top someone off quickly with the added hot. Every now and then some infests would get through, but Nourish and other healers handled those. I've 5 healed this at times, but most of my experience is with 6 healers, and honestly, 6 healers is a pretty good route to go considering with the 30% buff you should have more than enough DPS to meet the enrage.

I don't know if this has been said before, but this needn't always be the case. Certain addons may be able to cause keybinds to activate on KeyDown rather than KeyUp, this is one: SnowfallKeyPress : Action Bar Mods : WoWInterface Downloads. Apparently, Vuhdo does this by default and Grid+Clique can be set up like this with some editing of its lua files. It's interesting information as it may be an easier way to time casts once one has gotten used to it.

I believe Grid+Clique now works by default, without editing any LUA files. I requested it of the addon author and he added the functionality. You have to use a checkbox in the options, but other than that it takes no setting up.

I've read the original posts and screened the replys and seen nature's grace pop up a few times.
At several points there is a mention of dropping Celestial Focus in the balance tree.
What I'm interested in is what to do when you're almost soft haste capped without Celestial Focus.

During Nature's Grace proc the first Nourish will heal it's target a bit faster, but that's it, due to the GCD cap of 1 sec.
I've looked into the stats for Healing Touch and Regrowth in Rawr compared to Nourish.
It doesn't really seems to be an option for throughput or mana efficiency to switch to Healing Touch or Regrowth.
They only seem a bit stronger if there is no HoT active on the target, otherwise Nourish seems better.
For Regrowth the casts would have to be on different targets to prevent overwriting the HoT on top of that.

This brings me to the question if it's beneficial to pick up some more points in the resto tree?
Or am I missing something and is it worth keeping points in Nature's Grace and use other spells?

Some people use 11 in Balance. I like Nature's Grace because there isn't a whole lot of appealing choices in Resto over Nature's Grace, because sometimes it's useful to be able to machine gun a few Regrowths off, and because Nature's Grace affects Rejuv when glyphed with Rapid Rejuv. Finally, even if Nourish is capped by GCD, getting it off faster on the tank is still useful (for the same reason Swiftmend is useful, even though it is also "GCD capped" like all instant spells).

There is no single reason to not use 4 piece tier 10. Haste soft cap is easily achieveable these days without getting items of lower item level and thus gimping spell power. Also, I neither heard, nor noticed anything about set bonus being bad when you have another druid around. Why would anyone drop an obvious HPS increase anyway?