Maths of Pandaria: Expertise & Hit
by, 22-08-2012 at 01:39 AM (45583 Views)
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: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.Expertise will negate dodge and spell miss, then parry.
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.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).
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...
- 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
- 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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