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Maths of Pandaria: Expertise & Hit

Rating: 3 votes, 5.00 average.
In Mists there are a few changes around how stats are handled, which has the odd effect of making Expertise a viable stat for spellcasters. Yes, that’s right, expertise. In case you having a “doubleyouteeeff” moment, I’ll refer you back to a Dev Watercooler post on the subject. The important bit is here though:
Expertise will negate dodge and spell miss, then parry.
This is mostly a change to improve the lives of melee, especially Enhancement Shaman, Retribution Paladin and I think Rogues may also use spell hit tables for poisons. This is because the required spell miss percentage for a target will always be melee miss + dodge chance, and these two are always equal.

Against a +3/boss level creature: 15% spell miss, 7.5% melee miss, 7.5% dodge, 7.5% parry (from the front only), 7.5% block (from the front only).
Now, the interesting thing for casters is that since 1% of expertise = 1% spell hit, it’s possible to reforge your lowest value stat to expertise to gain more spell hit even if there’s already hit rating on the item. This is essentially an extension of the Balance/Elemental/Shadow spirit->hit conversion, although since spirit and hit never exist on the same item those classes can’t “triple-dip” on hit from an item.

The only time you can take advantage of this is with an item that already has hit rating on it, along with your lowest value secondary stat, and also require additional hit. This probably won’t happen that often.

You Also Get...

The second interesting thing from this is that Human casters can get an extra 1% expertise if they equip a mace or a sword. This will reduce their spell hit requirements to 14% (or 4760 rating, a reduction of 340, just like that of Draenei, and provides an interesting gearing variation for Mages, Shadow Priests and Warlocks.

The full list of expertise specializations are as follows:
Dwarf: Maces - Priests, Shaman
Gnomes: Daggers & Swords - Mages, Priests, Warlocks
Humans: Maces, Swords - Mages, Priests, Warlocks
Orcs: Axes & Fist Weapons - Shaman (if there's ever another Axe or Fist spellcaster weapon that is)

But Wait, There’s More!

The third interesting thing about expertise & hit is how it works with pets. Pets gain stats from their owners, usually with some modifications. In the case of expertise & hit your pet inherits 50% of your hit as hit, and the other 50% as expertise. This also applies to expertise as well.

This means that for casters, that 15% spell hit translates to 7.5% melee hit, 7.5% expertise and 15% spell hit (by virtue of that melee hit + expertise = spell hit conversion) (source. This means if you’re not missing, your pet is also not missing either.

Numbers, numbers, numbers...

Level 85
  • 6.5% Expertise -> 666 rating
  • 7.5% Expertise -> 769 rating
  • 6.5% Hit -> 666 rating
  • 7.5% Hit -> 769 rating
  • 14% Hit -> 1435 rating
  • 15% Hit -> 1537 rating


Level 90
  • 6.5% Expertise -> 2210 rating
  • 7.5% Expertise -> 2550 rating
  • 6.5% Hit -> 2210 rating
  • 7.5% Hit -> 2550 rating
  • 14% Hit -> 4760 rating
  • 15% Hit -> 5100 rating


Now I Understand!

Hopefully this makes it easier to understand how expertise & hit work in Mists of Pandaria. It should certainly produce some interesting gearing choices, and you can’t laugh at a Mage if they have expertise gems anymore.

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Comments

  1. Sufjan's Avatar
    Dwarven shaman can also take advantage of the mace specialization.
  2. Binkenstein's Avatar
    Quote Originally Posted by Sufjan
    Dwarven shaman can also take advantage of the mace specialization.
    Added. Forgot about that one.
  3. JoeBravo's Avatar
    after reading this I wonder if there is a expertise+mastery/crit/haste trinket for MoP in game... could be BiS for just about any dps class. XD

    but thanx for the clarification, I didn't realise the implications of that change till now
  4. Mattrik's Avatar
    So Ele Shaman now have 3 stats that provide Hit rating, and for the first time it's possible for 2 of them to appear natively on the same item.

    And if you have the reforging going otherwise unused, you could shuffle Hit or Expertise to Spirit as it is the only one of the three that has a secondary effect, even if it is only a bit of mana regen.

    On the flip side, itemisation could be about to get watered down for casters a little bit, as Int+Expertise items (currently basically unknown: WowheadList ) might start making their way onto the drop tables...
    Updated 23-08-2012 at 12:52 AM by Mattrik
  5. Unregistered's Avatar
    Thx for this info!

    and human shadow priest ftw? ^^ 3% spirit bonus and exp bonus if they use sword or mace.
  6. Mattrik's Avatar
    ... actually, there's no Int+Expertise items in MoP.wowhead.com yet: MoPWowheadList (answering my own concern)
    Updated 23-08-2012 at 02:51 AM by Mattrik
  7. Unregistered's Avatar
    Hmm what if i'm a dwarf enhancement shaman and i'm using 2 maces? Or one mace and one axe?
    does only the mainhand weapon count for spellhit?
  8. Binkenstein's Avatar
    Quote Originally Posted by Unregistered
    Hmm what if i'm a dwarf enhancement shaman and i'm using 2 maces? Or one mace and one axe?
    does only the mainhand weapon count for spellhit?
    "The draenei racial should transfer to the pet. The expertise racials should use the higher value of MH or OH." http://us.battle.net/wow/en/forum/to...7?page=59#1170

    Think it means that it applies to both, but we'll probably have to recheck after 5.0.4 finishes patching.
  9. Zalbar's Avatar
    HA! I finally get to turn the tables on all those huntards whom I've been holding a grudge against since forever.

    ...everything is shaman loot now. :P
  10. Unregistered's Avatar
    Does this mean dwarf elemental shaman with draenei in raid will need only 13% hit?
  11. Binkenstein's Avatar
    Quote Originally Posted by Unregistered
    Does this mean dwarf elemental shaman with draenei in raid will need only 13% hit?
    The Draenei hit racial is self-only. It hasn't been an aura since the start of Cataclysm.
  12. Gaviin's Avatar
    Does the hit that we gain from Spirit get translated to our elementals in the same way that hit from Hit is? The reason I ask is that I ran SimCraft and the value of Spirit is 1.48 whereas the value of Hit is 1.63, and I can't seem to figure out why these values would be different. The only theory I could come up with was that Hit translates to our pets while Spirit does not.
  13. Binkenstein's Avatar
    Quote Originally Posted by Gaviin
    Does the hit that we gain from Spirit get translated to our elementals in the same way that hit from Hit is? The reason I ask is that I ran SimCraft and the value of Spirit is 1.48 whereas the value of Hit is 1.63, and I can't seem to figure out why these values would be different. The only theory I could come up with was that Hit translates to our pets while Spirit does not.
    Yes, it is. The reason the weight values will differ is that the 25,000 iterations run for that weight were different. Just ignore the Spirit value.
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