I've heard that T10-4set bonus is a DOT which is not stacked (not like mage's scorch) by t10-4set user (using faction-change)

he said, within that 4 seconds, if Wrath or Starfire is crit again, that DOT will be initialized too.
also, testing to dummy, it is 1.2% (16501 in 1400k all Damage)
Actually, I confirmed his screenshot.

does anyone know this set bonus exactly?

"New topic: I am going to change my stance on Glyph of Insect Swarm."

Thanks Arawethion for finally pointing this out. As a moonkin raid leader, I've been one of the few promoting this perspective on other Moonkin blogs for quite some time. It needed to be said and summarized here.
As a slight benefit for taking a lower dps Glyph of Starfall, we can be rewarded with a minor increase in angel procs from Neiblung. Having more Starfalls for a fight definitely results in a better opportunity.
Beyond the obvious increased damage a shorter cooldown provides, Starfall's viability increases in ICC encounters as well. It syncs better as a 60 second CD for Deathwhisper add waves, Saurfang Blood Beasts and Putricide's Unstable Experiment add formations (available for each Vile Ooze).
These aren't currently difficult dps situations in normal mode, but having our burst available at the right times definitely helps Moonkins to snatch a larger portion of the available damage pool than we'd have access to otherwise.

Galadriel, I am completely confused by your post, but I'll answer your question...

The Lanquish set bonus acts like a mini Ignite. Every time we crit, 7% of that damage is converted into a DotT. If that DoT is still present when we crit again, the total damage remaining on the previous DoT is added to the new DoT and then split up among each tick. I believe it ticks every 2 seconds, so let me break it down for you.

Assume you first Crit with an 18,000 damage Starfire. The Languish DoT will deal 1260 damage over 4 seconds, split between 2 ticks at 2 second intervals for 630 damage per tick. Now, assume 3 seconds later, you crit again but this time for 20,000 damage. The original Languish dot will have already ticked once (for 630), leaving another 630 damage remaining. The extra remaining damage (630) will be added to the new Languish application (which would be 1400) for a total damage of 2030 damage over 4 seconds or 2 ticks every 2 seconds for 1015 damage.

Here's where it gets fun. Let's assume this a typical Lunar rotation where you get off 7 consecutive Starfire crits averaging 20k damage (to keep the numbers easy) with a cast time of 2 seconds. Because of lag and to better illustration the mechanics of the ability, I'm going to assume that the Starfire Crit will occur just after the Languish tick. So here's how it will look like.

1st 20k Starfire Crit
Languish Tick: 700
2nd 20k Starfire Crit
Languish Tick: 1050
3rd 20k Starfire Crit
Languish Tick: 1225
4th 20k Starfire Crit
Languish Tick: 1312.5
5th 20k Starfire Crit
Languish Tick: 1356.25
6th 20k Starfire Crit
Languish Tick: 1378.125
7th 20k Starfire Crit
Languish Tick: 1389.0625
Languish Tick: 1389.0625

Total Damage: 149,800
Total Languish Damage 9,800
% of Total Damage: 6.542%
% of Increased Damage: 7%

As you can see, the damage begins to ramp up pretty quickly with the first tick hitting for 700, then the 2nd on hitting for 1050. However, it does start to taper off toward the end, with the last two crits only having a difference of ~11 damage. Someone more versed with infinite series could probably derive the limit of the damage on Languish ticks (assuming there is no hard limit set for the damage), but it's been a long time since my last Calculus class, so I'll save that for someone better suited.

When it comes down to it, the bonus is roughly 7% of 80% of my Starfire damage (nets 5.6%) plus 7% of 55% of my Wrath damage (nets 3.85%). Wrath and Starfire combined make up 75% of my total damage, and they are split about equally for the most part. Part of my damage comes from Reign of the Dead and it makes up 4% of that damage or so. Factoring that out gives me roughly 78% of my damage from Wrath and Stafire (or Wrath and Starfire each contributing to 39% of my damage). This means that (ignoring the static bonus damage Reign) Lanquish gives me a combined bonus of about 3.6855% damage. Obviously, the bonus will appear smaller with Reign of the Dead procs, but I find that to extra damage to water down the true effect of our set bonus.

The only flaw from this is that if anything, it's slightly undervalued. Moonfire currently accounts for about 13% of my damage or so because of the crits from the t9 bonus, which we all know will be nullified by gaining the t10 bonus. This means that Moonfire will represent a smaller percentage of my damage which will in turn mean that Starfire and Wrath will represent a larger percentage of my damage (as will Insect Swarm). However, I am not about to go through and try to extrapolate that number from these figures because I was only after a ballpark number as it is.

Feel free to post any other flaws in my mathematical logic, but I believe these are accurate. This obviously does not offer a direct comparison to the damage gained from the 2pct9 bonus... And I'm just not up for that tonight.

1) I don't know where you got the "7.38%" from; it doesn't follow from your previous numbers at all. Anyway, the value of the 4T10 is around half that. You can look into WC for more detail.

2) In your example, the limit of the size of the Languish ticks would be 1400. It's a geometric series, which each increase adding half as much as the last. I'm just answering your mathematical curiosity here though, that number has no particular relevance to anything. And in practice, most people have a Starfire cast time of less than 2 seconds, so the Languish is just going to stack up throughout Eclipse and unload the damage when it ends.

3) As far as I know, we have know actual confirmation that this is how the set bonus works. We're just assuming since anything else would be silly. The earliest anyone can have enough Emblems to get the bonus on live is next Tuesday (and I expect someone to confirm this for me that evening! I can't since I already bought a Resto piece).

4) Languish ticks will probably be subject to partial resists, slightly decreasing its value.

From what I understood by Galadriels post his friend used faction change to reset his raid lockouts and got his 4 pc setbonus already? And he then says that the setbonus is stacked in multiple instances of the dot rather than in one instance of it. At least that's how I understood his post.

Arawethion, you may spot some inconsistencies because I am pulling my overall crit rates from memory. I don't exactly remember what my crit chance for Wrath is in a raid, although I know that it is in the 55% range. It usually depends on whether there is another mage in the group or not (as that dictates whether I get Focus Magic or not).

I arrived at that number by adding the total benefit of Starfire and Wrath, then multiplying it by the percentage of my total damage that is represented by Starfire and Wrath (after removing the damage from Reign of the Dead). It may have been a little easier to understand had I directly multiplied these numbers out individually, but since Wrath and Starfire (at least for me) are pretty much equal, I treated them as equal parts of one lump chunk of my damage. And you're right, the number came out to be 7.37 upon recalculating, but I'm going to guess that's because I rounded in the post, but not in my calculations.

Upon doing this again though, I stumbled across my mistake. It was a simple one actually and at the very end. I added the values together and left it as such. Instead, I should have added them and then divided by 2 to reach the actual bonus value because they represent half of the overall lump chunk of damage that is Starfire and Wrath. It probably would have been just as easy to figure out what the value was for them individually, without treating them as one combined sum, but it was late and I didn't exactly have the patience for it.

And yes, I could (like most people) just take your work and present it as something that I figured out myself, but I prefer to actually figure things up on my own.

Not another bugged set bonus... If it is indeed refreshing upon every application it'll be as good as useless. Surely not intended? Flashbacks of 4T8 and the quest to fix that.

On another note, given the strength of OF on some ICC encounters, does it seem worthwhile changing our two points in Imp MF to OF after the drop of 2T9 (given we will if 4T10 actually works)?

My napkin math has [Glyph of Starfall] at 50 dps, so swapping it for the IS glyph would be a net dps loss of 100. Looking at Festergut's melee as an example, he's doing about 6500 dps on my guild's tanks, so preventing 3% of that is 200 dps of mitigation. Granted, strict numbers are more difficult to quantify when dealing with tank survivability and healing, as that one hit that didn't hit could prevent a wipe, but it's still not a bad tradeoff.

You need the two points in Imp MF to advance down the Balance tree...

We certainly don't get any benefit from more Moonglow and Imp MF still outweighs Genesis

I'm really confused by my trinkets.
Yes, i read your moonkin guide.I got [Muradin's Spyglass] , [Talisman of Volatile Power],[Eye of the Broodmother] and [Nevermelting Ice Crystal]

So according to your moonkin guide,Muradins spyglass is the most powerfull among them.But i really don't know which one to use for my second trinket spot.

Volatile power is very usefull with starfall but has 2 min.cooldown.Besides Eye of Broodmother gives a little low crit but full time 125 sp. While i was wondering which one is better to use, i got Nevermelting Crystal tonight and now i really need a trinket guide i guess.

Assuming that i have soft crit and haste cap, it will be better to stick with the trinkets which gives spellpower? I'm really clueless at the moment.

Eye of the Broodmother is the best choice out of what you listed.

Probably because the spell is level 1?
Languish - Spell - World of Warcraft

I've forgotten how this works. But that's roughly 75%, so maybe the level-based partial resists are hitting the cap.

Not quite--tanks already mitigate a lot, and the 3% is additive with that. Glancing over a whole bunch of Rotface pulls last night, our Warrior MT avoided 42% and blocked another 31%, blocking about 1/3 on average. So IS would have reduced incoming tank damage by around 6%.

World of Warcraft - English (NA) Forums -> Moonkin T10 4pc bugged

Can anyone confirm whether this hotfix has gone live? If so, what sort of percentage of our damage is 4pc T10 worth now. 1-2% is far too low, but if that was the value before the resists. Then I understand it should be higher, but I doubt that is the case, it seems like it is 1-2% if nothing gets resisted. Any confirmation?

The post was only three hours ago and is not a hotfix announcement. They are simply acknowledging the problem and that CAN hotfix it, nothing about when or how soon.

Can you please just think about what you claim there? 1-2% if nothing gets resisted when it is ~1% with 75% resists?
4T10 ~ 3.9% damage, you can probably get it yourself why it is arournd that value

But if "tank damage isn't a concern," then you'd just Glyph it again for that fight.

I really don't think people should get into some kind of constant calculus of how important the IS debuff is at all times. It would be very distracting and generally inconclusive. It's best to just get used to the idea of having a nice raid contribution that comes with our DPS. If you really want to squeeze out the extra little bit at some fight, the option's always there.

As far as I understand due to some servers experiencing resets twice a week (meaning 10 embelms over the normal 5), players have been able to obtain the 4 piece set earlier than others. I assume your Tuesday deadline didn't take this bug into consideration? I didn't bother to due the numbers but since others are posting they have their set already...

Right, I meant with standard Emblem progression, the most you could have at the end of this week is 295. There are few random things that have given some people extra Emblems.

Buff confirmed if we trust some Korean patch notes:
Patch 3.3.2 patch notes on official Korean WoW site

There are lots of fights where tank damage is not constant. Just off the top of my head so far in Icecrown, there's Saurfang frenzy, Festergut stacks, Putricide p3, Blood Council (maybe, not sure if the melee damage gets buffed when they get empowered). The point is, you might want the -3% hit debuff at some points and not others, and from my experience and WC outputs, unglyphed IS is a dps downgrade.

Looking through the logs in our recent 10 man BQL attempts I found that our moonkin in that run only got about 30% uptime on owlkin frenzy with 2/3 in it. If the difference of that last point gives such a large difference in uptime like Talsh is showing would it be better worth it to take a point from another talent to fill it? The only candidates I see would be either Force of Nature since they don't benefit from the buffing that fight does for us or natures reach, though I really dislike the idea of losing range even though the threat reduction wouldn't matter much for BQL.