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Mearis

Shadowpriest Theorycraft 3.3 Edition - I get by with a little help from my friends

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There's no mention of clipping DoTs and their effect on DPS in the first post. Prior to 3.3 it was agreed that clipping DoTs was a DPS loss. Now with VT and DP benefiting from haste, would it ever be a DPS increase to clip them to take advantage of temporary haste buffs before they expire? For example if you have heroism/bloodlust, a trinket, or engineering gloves wearing off before it is time to recast VT/DP. Not sure what's the best way to calculate this as there are many variables such as how much haste you currently have, how many ticks you are clipping, whether your spellpower or crit changed for the initial cast compared with the clipping cast, DPS loss from taking time to clip the DoTs rather than using MB/MF, etc.

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Something in the 3.2 thread that's worth re-mentioning is the possibility of recasting VT/DP as heroism/bloodlust fades if there is only a tick or two left on the dot. Obviously it's not worth recasting either if you just refreshed VT/DP, but if the dots will fade a second after the heroism/bloodlust expires, it's probably better to refresh them a second before, even if you get one less tick of the original dot. The result is having a full 11s VT after the heroism/bloodlust expires. If you get a timer that tracks when the next dot tick will occur, you reduce the risk of clipping when you recast.

On the subject of consumables:

Potion of Wild Magic seems to be the better choice in fights where pre-potting is very advantageous (ie: when you can keep up the same SW:P for the duration, Marrowgar / Deathwhisper / Saurfang all come to mind), but I'm curious what potion is more advantageous during BL / heroism?

From a PP perspective, Potion of Speed beats out Potion of Wild Magic, but with such high values of haste + BL/Hero, it seems like Potion of Speed may be a bit overkill.

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For your Tailoring PP value, you neglect to subtract the value of 23 haste to cloak. As well, my math for Engineering is available in the 3.2 thread.

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Don't want to debate this issue over again, but currently +18 spirit on boots is a bigger dps increase than +12 crit rating if you don't need the hit.

Using these scaling factors...

                Int	Spi	SP	Hit	Crit	Haste

Scale Factors	0.4472	0.9539	1.6557	2.5573	1.4785	1.5057

Normalized	0.2701	0.5761	1.0000	1.5445	0.8930	0.9094

+18 spirit: 19.6*0.5761 = 11,40678

Icealker: 12 * 0,8930 = 10,71600

So if you really don't want to use Tuskarr, use at least +18 spirit instead and not icewalker.

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Let's see, in ToC (especially ToGC):

* Fires from bombs on Gormok.

* Poison clouds on snakes.

* Knockback/charge on Icehowl.

* Volcanoes on Jaraxxus.

* Faction Champs is a lot of running.

* Avoiding balls on Twins.

* Running to an ice patch on Anub (not a DPS gain, but is still nice)

In ICC:

* Avoiding Marrowgar's spin attack and frost flame stuff.

* Death and Decay on Lady Deathwhisper

* Avoiding rockets on the Gunship Battle.

* Avoiding Blood Beasts on Saurfang.

So.. which fights *don't* you have to move in, exactly? You can't plan to have an AoE dropped on you while you happen to be refreshing DP to hide the run with a GCD, you know. Chances are it is going to be while you are mind flaying, refreshing VT, or casting MB. None of those spells afford you the luxury of a GCD with which to move.

Saying that you have to move on these fights without qualifying the type of movement is dishonest, since, as Graf says, you can usually wait to move on the GCD for most of them, or they are just 1-step moves anyways, and you aren't running around for "3 seconds every 3 minutes". Going through that list again, even without considering that these are all 1-step movements:

  • Gormok - with VE on, you can stand to eat an extra tick of the fire in order to wait for DP/SW:D
  • Snakes - you shouldn't be standing anywhere near poison to begin with
  • Icehowl - 8% move speed is not required in order to move out of his way, you can cast while moving, and if you find yourself out of range a lot of the time, you can just stack up with the biggest bunch of people to improve the odds of him charging somewhere near you (=less time running into range)
  • Jaraxxus - you can wait until a GCD to move out of infernals
  • FC - you can wait for GCDs, and chances are you can help dispel or hit fade while you're running anyways
  • Twins - all 1-step moves, unless you're gathering orbs up, in which case your run speed gets overridden by the speed bosst from orbs
  • Anub - run speed doesn't help his spikes get to an icepatch any sooner
  • Marrowgar - you can eat the ww until you get a GCD
  • Deathwhisper - wait for a GCD to move out of D&D
  • Gunship - wait for a GCD to move out of rockets, or just eat them
  • Saurfang - wait for a GCD to move away from blood beasts if they're going to get that close

The only times run speed would be of any benefit are during massive crashes on Icehowl and on Faction Champions. In the case of Icehowl, you can get back into range an extra fraction of a second sooner. That being said, you can get into range before he hits the wall even without run speed, which means all you're really going to do is start your MF 0.222 seconds earlier. Maybe. As for faction champions, yeah you can run from a melee faster in theory, but in practice, you have fade, dispersion, fear, shield, rocket boots, haste potions, body & soul from your friendly neighborhood holy priest, HoP, intervene, death grip, and possibly other ways to get away. The run speed is of negligible benefit to survivability and of almost no benefit to DPS since you either have to run past a warlock to get the melee off you or have someone else do something on their end to help (ie, the length of time it's on you is dependent on other players and whether you sacrifice their survivability for your own).

And Snowy, to claim that stamina and run speed benefit DPS more than crit and hit rating or even spirit means that the burden of proof is, in fact, on you. We understand that, on paper, moving without DPSing is a DPS decrease and that moving faster can reduce this loss, but saying that "lots of people already think run speed is better since a long time ago" without actually providing a practical example of such is silly. A million people can believe something for thousands of years, but that doesn't make it true.

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It seems as if all your arguements boil down to 'I can stay in the bad AoE effect until I reach a gcd'. The only gcd used in an optimal dps rotation is devouring plague. You would cast this perhaps once every 18 seconds. Are you really expecting people to heal you for 18 seconds in a worst case scenario?

You're also ignoring various movements that are required to optimize the fight. On snakes, you might need to move away from your healer who is following a tank. On deathbringer you might need to move away from the hunter who just ran back after dropping a trap. A large number of fights involve a positioning component, and run speed to boots helps not only your own dps, but the raid as a whole.

Raids go much smoother when everyone is doing what is best for the raid, not what gets them an extra 22 personal dps.

Here are some places to start when looking for discussion about runspeed:

http://elitistjerks.com/f77/t54629-discipline_healing_compendium_v3_1_a/p12/#post1308924

http://elitistjerks.com/f77/t73364-shadow_priest_gear_discussion_totc/p2/#post1395807

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We understand that, on paper, moving without DPSing is a DPS decrease and that moving faster can reduce this loss, but saying that "lots of people already think run speed is better since a long time ago" without actually providing a practical example of such is silly. A million people can believe something for thousands of years, but that doesn't make it true.

The math on this is pretty elementary. If I just use Simcraft, I find that the value of 12 crit is about 19 dps -- the DPS in one of the T10 sets that I'm fiddling with increases from 10604 to 10623. Figuring out the value of the +hit is more tricky, but if I can take full advantage of it, running Simcraft with Icewalker and without it at 277 hit rating from gear yields an increase of 65 dps.

We can solve how much we have to move for to make this worth it by the following logic:

Let X = the amount of damage you lose over the entire encounter by not using Icewalker.

Let Y = your DPS

Let Z = the time you need to spend DPS'ing to make up the lost time from moving = X/Y

So, for example, lets assume a 5 minute fight, you do 10604 damage.

X = 65*300 = 19500

Y = 10604

Z = 19500/10604 = 1.84 seconds

Finally, let T = the amount of time you have to travel for Z to be 8% of your travel time. T/100*8=1.84, so T=23 seconds. Now if every single time you have to move it's for less than 1.3 seconds (or whatever your GCD is) and you can use SWD, then obviously you've lost less DPS -- but you've still lost *some* DPS. I'm unsure how to model this, as sometimes you'll be able to SWD while moving when the only thing you could cast next would have been mind flay, and sometimes you'll have to move right when VT is about to fall off and MB is coming off cooldown next, and sometimes it'll line up perfectly with reapplying DP. 23 seconds seems like a lot of travel time, but it's only 4.5 seconds per minute. I certainly run more than that on Faction Champs, Twins and Anub -- and maybe on Beasts depending on if I get Snobolled and other RNG in p2/p3.

Note also that if we do that same math if we only benefit from the crit:

X=19*300=5700

Y=10604

Z=5700/10604=0.54 seconds.

T=6.75 seconds, or only 1.35 seconds of movement each minute required to break even.

Finally, maybe your guild doesn't give a crap, but most (good) guilds take a pretty dim view of people who stand extra time in the fire just to boost their own personal dps by a fairly small amount. When I'm in some kind of AOE or whatever situation you want to present, I'm not "waiting for a GCD." The benefits from run speed outweigh anywhere from a 19 to 65 DPS increase, and that 19-65 DPS increase is if you never, ever have to move, which is an unrealistic assumption for most fights.

And Snowy, to claim that stamina and run speed benefit DPS more than crit and hit rating or even spirit means that the burden of proof is, in fact, on you.

I'd like to close that you're extremely confused as to how this works. When you're trying to disprove the points made in the guide, the burden of proof is on you to prove that it's wrong. You can't just wave your hands and say it's wrong. The math has been done in the past, and I just had to waste time redoing it because you were too lazy to bother searching. If you want to talk numbers, you're more than welcome to do so, but otherwise we're not going to shit this thread up further with this topic.

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Can anyone tell me the cap for haste?

Look to the first page (if not in the original post) to find the answer for this.

I had wondered about that previously, as I had believed the value of haste after a certain percent/rating would lead to a decrease. I agree with the response post I received, which was "there is no cap".

As for the response, one small question. is there a way to create a numeric value for potential dps loss from spell collision? I admit that this is what I worry about most when increasing, or considering increasing my haste.

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Look to the first page (if not in the original post) to find the answer for this.

I had wondered about that previously, as I had believed the value of haste after a certain percent/rating would lead to a decrease. I agree with the response post I received, which was "there is no cap".

As for the response, one small question. is there a way to create a numeric value for potential dps loss from spell collision? I admit that this is what I worry about most when increasing, or considering increasing my haste.

An exact analitical solution is possible in theory, but in practice it is completely horrible (you have to use markov chains for dependent events every time you have a fork). The easiest way is to just run simcraft at different levels and see what the value of haste is at different gear rating.

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An exact analitical solution is possible in theory, but in practice it is completely horrible (you have to use markov chains for dependent events every time you have a fork). The easiest way is to just run simcraft at different levels and see what the value of haste is at different gear rating.

You could probably model it using a Monte Carlo simulation. Simulating an exact stand up fight as many times as you have the processing for, and introducing interruptions randomly, then examining the DPS loss incurred. You would want to look pretty closely at actual fight data to get accurate bounds on movement frequency and duration, as well as a good assumption on the distribution.

Edit: Since there are a reasonably finite number of events that can occur, were someone extremely motivated to get that extra 22 DPS they could build a stochiastic table they could drive with the simulation and run it as an overall or even individually per fight.

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The absolute value of haste doesn't decrease. However, it shall be said that the value of other stats (ie spellpower and crit) grows as haste increases. That's the case for most stats (they increases the value of other stats), and that's the point of balancing stats.

Now, I wouldn't really bother about spell collision for shadow priest. The cycle is not a fluid one, and it's not very likely that a very specific amount of haste leads to a huge (or low) number of collision. That could be the case with a more spammy cycle (one nuke on cd, one filler spell : you want to fill your cd with an integer amount of filler spells if possible). But for sp, there is lots of different filling duration.

On top of that, haste tends to fluid limit of spells, ie. to reduce the granularity of spells. Not much, but a little, and that will decreases the collision effect of cd-based spells (but not that of dots, now that they scale with haste).

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A few points: Potent Ametrine are not a choice because Reckless Ameterine are always better. There might be some really really wierd gear scenario where crit overtakes haste, but realistically speaking, you are almost always better off gemming for haste.

I've been observing that if you stack haste and temp haste effects you will rather quickly have SimCraft pooping out higher crit scale factors. For me it's really close, three Potent and the rest Reckless turns up a higher dps than all Reckless, but all Potent is lowest, mucking about with an 850ish haste, 550ish crit, engineering + Scale of Fates profile and optimal raid. I suspect this has more to do with the crit relative value becoming higher at very high haste values (while haste's absolute value is still higher than crit) rather than any "weird gear scenario". Even if it comes down to a specific gear point giving unexpected scale factors, that still doesn't rule out Potent as a choice.

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I've been observing that if you stack haste and temp haste effects you will rather quickly have SimCraft pooping out higher crit scale factors. For me it's really close, three Potent and the rest Reckless turns up a higher dps than all Reckless, but all Potent is lowest, mucking about with an 850ish haste, 550ish crit, engineering + Scale of Fates profile and optimal raid. I suspect this has more to do with the crit relative value becoming higher at very high haste values (while haste's absolute value is still higher than crit) rather than any "weird gear scenario". Even if it comes down to a specific gear point giving unexpected scale factors, that still doesn't rule out Potent as a choice.

I agree, and was surprised to find this out. Assuming equal DPS increase, crit is also better than haste since it does not increases DPS and efficiency.

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The absolute value of haste doesn't decrease. However, it shall be said that the value of other stats (ie spellpower and crit) grows as haste increases. That's the case for most stats (they increases the value of other stats), and that's the point of balancing stats.

I just have to quote this, as its the new ShadowPriest reality. We're not playing 2.x (TBC) nor pre-3.x ShadowPriests anymore. We actually scale decently with more than just 1 stat. The only really cappable stat (given values within existing ilvl gear), is Hit Rating. We are no longer stacking just Spell Power like in TBC.

When it comes to the part about Haste Plateus, they are virtually gone, thanks to hasted Devouring Plague and Vampiric Touch. The Plateus were never that huge anyway. Reason for these Plateus were mostly spell collisions.

Just make sure you cap that Hit.

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Arcane mages also bring the damage buff. It's called Arcane Empowerment.

Another benefit of opening with MF3-MF2 is that it gives enough time for the rogue using tricks on you to open on the boss, so all 3 dots will have 15% dmg buff.

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Arcane mages also bring the damage buff. It's called Arcane Empowerment.

Another benefit of opening with MF3-MF2 is that it gives enough time for the rogue using tricks on you to open on the boss, so all 3 dots will have 15% dmg buff.

Does using Tricks of the Trade on your Shadow Word: Pain allow you to keep 15% damage on SW:P the entire fight with Mind Flay? Or will it refresh to normal when your Tricks falls off?

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Does using Tricks of the Trade on your Shadow Word: Pain allow you to keep 15% damage on SW:P the entire fight with Mind Flay? Or will it refresh to normal when your Tricks falls off?

Prior to the patch, it would stay the entire time, I am not sure about now and that's an excellent question worth empirically testing.

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I tested shadow weaving after the Corruption hotfix went through and there was no change, so I would expect there to be no change in ToTT as well. It's worth testing though if someone has the time.

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Just tested it. The mechanics are the same, a dot casted under the effects of tricks will keep the buff for the entire duration, SW:P will keep the buff for the entire fight.

I can't run simulations right now, but i'd like to see at what levels of crit and haste they have the same PP value.

If we can trade crit for haste on a 1:1 ratio the maximum dps point would occur where 1 crit rating gives the same dps as 1 haste rating.

Just use some fixed amount of SP and fixed sums of crit and haste. For example 3000 SP and 1400 crit + haste, then calculate the PP value of crit and haste for different splits between the two stats, this might give us an idea of when to start gemming crit again.

Edit: Actually, when you trade crit for haste you end up changing the scale factor of the other stats, thus its not true that the maximum dps for that amount of crit + haste is achieved when crit PP = haste PP, but its very close to it.

I'll do some simulations when i get back home.

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The tailoring is too low--I think you used my old math with the inflated pre-SWP nerf values of haste for it; since Haste is at almost no point better than SP, it should still be >50 PP.

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Out of curiosity, is Inner Focus still bugged to the point where it won't affect a dot's chance to crit? I've seen some shadow priests recently speccing into it and am wondering if they are using it with Shadow Word: Pain at the start or just saving it for emergency Divine Hymns or something along the lines of that.

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Many Spriests are removing points from Focused Mind (used in H Anub to make mind searing less mana-hungry) and putting 2 back in Imp VE, and another in Inner Focus. Inner Focus's best use, in the opinion of many good shadow priests, is to macro it to Divine Hymn as a clutch raid-saver. The extra crit and 0 mana cost is very useful there.

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Taking points out of Focused Mind or Vampiric Embrace is silly. You have plenty of spare points if you don't go with the Spirit Tap line (which has been proven to be awful at best).

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