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Paladin spell critical rates Edit

i wanted to find out exactly what the relationship between intelligence and crit rates for heals was. So i decided to run tests casting Flash of Light (Rank 1) and see the rates of critical heals. i had no points in "Holy Power", or did i have any +crit chance on spells. So these numbers are all based on my intelligence.

'Flash Heal (Rank 1)'
Int Crits Heals Cast Crit Rate Casts per Crit Int / Crit Rate
77 98 2195 4.46% 22.4 17.25
77 98 2112 4.64% 21.6 16.59
77 98 2109 4.65% 21.5 16.57
77 99 2221 4.46% 22.4 17.27
77 99 2196 4.51% 22.2 17.08
77 99 2113 4.69% 21.3 16.43
77 100 2226 4.49% 22.3 17.14
77 100 2222 4.50% 22.2 17.11
77 101 2276 4.44% 22.5 17.35
77 101 2227 4.54% 22.0 16.98
77 102 2277 4.48% 22.3 17.19
153 20 269 7.43% 13.5 20.58
153 20 268 7.46% 13.4 20.50
153 21 270 7.78% 12.9 19.67
153 22 302 7.28% 13.7 21.00
153 22 280 7.86% 12.7 19.47
153 23 305 7.54% 13.3 20.29
153 23 303 7.59% 13.2 20.16
153 24 322 7.45% 13.4 20.53
153 24 306 7.84% 12.8 19.51
153 25 346 7.23% 13.8 21.18
153 25 323 7.74% 12.9 19.77
153 26 355 7.32% 13.7 20.89
153 26 347 7.49% 13.3 20.42
153 27 391 6.91% 14.5 22.16
153 27 356 7.58% 13.2 20.17
153 28 399 7.02% 14.3 21.80
153 28 392 7.14% 14.0 21.42
153 29 412 7.04% 14.2 21.74
153 29 400 7.25% 13.8 21.10
153 30 420 7.14% 14.0 21.42
153 30 413 7.26% 13.8 21.06
153 31 462 6.71% 14.9 22.80
153 31 421 7.36% 13.6 20.78
153 32 501 6.39% 15.7 23.95
153 32 463 6.91% 14.5 22.14
153 33 519 6.36% 15.7 24.06
153 33 502 6.57% 15.2 23.27
153 34 522 6.51% 15.4 23.49
153 34 520 6.54% 15.3 23.40
153 35 528 6.63% 15.1 23.08
153 35 523 6.69% 14.9 22.86
153 36 529 6.81% 14.7 22.48
155 193 3379 5.71% 17.5 27.14
155 193 3370 5.73% 17.5 27.06
155 194 3380 5.74% 17.4 27.01
164 81 1149 7.05% 14.2 23.26
214 191 2787 6.85% 14.6 31.23
257 35 440 7.95% 12.6 32.31
257 49 570 8.60% 11.6 29.90
279 446 5700 7.82% 12.8 35.66
279 447 5701 7.84% 12.8 35.58

Plotting the critical heal rates verses intelligence, the relationship looks vaguely linear, but doesn't fit as well as it should.

CritRate vs Intelligence-Linear

As you get higher in intelligence (especially above 200 intelligence), the rate doesn't rise as much as it should. Also, if the relationship is linear, then apparently someone with no intelligence has a significant non-zero crit chance. A linear trend doesn't seem to be the right fit.

The failings of a linear trend are also pronounced when you look at the inverse of critical cast rates: Casts per Critical spell.

CritRate and Hits per Crit vs Intelligence-Linear

Casts per Crit is the average number of casts required before you get a critical cast. At the highest range it is requiring more heals to get a crit than a linear trend would suggest. So i began to realize that a linear trend was not the answer. Some people of suggested that for a paladin, the spell crit chance is Int / 30. Including those values on the plot don't fit at all with the real world data.

Referring to the Blizzard post mentioned in [Talshuler's Int Research]

"Ok, I could have phrased things differently in my OP and I can see how this is different from other comments and how it can be confusing in itself.Well, I’m here to say that I have the real deal comprehensive overview of how INT affects your Crit%. I have been talking with someone who loves crunching numbers and is rather…intimate with the mechanics we are discussing.First off, there is an expected number of INT for each level for players of different classes. For continuing examples I will refer to the mage. Again, each class has different values on them and therefore scale differently, as we shall see.
For the mage at level 60, this number is 286 INT. Now, when a mage is at that level, INT affects Crit% at the rate of 59.5 INT/1% Crit. Again, these numbers are different for other classes at level 60.
However, a level 50 mage will have a different expected INT value and therefore the ratio of 59.5/1% does not apply for a level 50. This is because the value of an individual stat is weighted according to the expected level. At level 10, the same amount of INT will yield more INT/Crit% than it would at level 20.
So, you may regard as what I said earlier as pertaining only to level 60 mages. I apologize for the confusion.
So, in closing, the ratio of INT/Crit% scales down as you increase in level and depending on class. The numbers I provided pertain to level-60 mages. No, I will not give you the exact numbers for your class and level.
EDIT- Oh yeah…there is no “nerf . The same mechanics have been here. However, it seems the perception and interpretation may have changed a bit"

Blizzard has a concept of "Intelligence per 1% Crit Chance". The value of which is calculated as:

ipc = i / R

where R is the critical rate expressed as a percentage value.

Without really understanding what this value means right now, we can go ahead and plot it.

IntPerCritChance vs Intelligence

In this case, a linear fit looks pretty good. In fact, some of the end-points look too close to round numbers. This has to be more than a coincidence. At zero intelligence, the Int per Crit (ipc) seems to be 10, and at 350 intelligence, the Int per Crit (ipc) seems to be 40. Knowing that the equation of a line is of the form:

y = m*x + b

the formula for Intelligence per Crit (ipc) as a function of Intelligence (i) is:

ipc = ((40-10)/(350)) * i + 10

   = (30/350) * i + 10

but we also know from our original definition of Intelligence per Crit (ipc) that:

ipc = i / R

We now have two equations that we can combine on ipc.

i / R = (30/350) * i + 10

We can now solve for Crit Rate (R) solely as a function of intelligence:

R = i / ( (30/350)*i + 10)

So now we graph this new relationship between your critical chance verses intelligence (and we also plot it's inverse, your casts before you should get a critical spell)

NOTE: The value of "casts per crit" has been rounded up, to show (on average) the maximum number of casts before you get a crit.

All Combined

Now the concept of "Intelligence per 1% Crit Chance" begins to make sense. When you have low intelligence, your crit chance rises quickly as you gain intelligence. As you get higher and higher intelligence, it becomes harder and harder to keep gaining crit chances. At the highest levels of intellignce, an incremental increase in intelligence does less and less for your crit chances.

It is also quite satisfying to see how closely the observed "Casts per Crit" values match the predicted values; much better than the linear

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