Given all the talk about Nature Resistance I thought it worth digging up some decent info on resistance and how it works. I was actually looking into the link between -resistance trinkets and +damage, but my reading of the WoW website, Wowwiki and others prompted me to pull together this brief explanation. If I misunderstood any bit then please post here as the way the mechanics work are quite important to understand the potential benefit of additional resistance.
When you are attacked with a spell in PVE play you have two chances to resist damage from the spell (different mechanics exist in PVP).
- The first is the chance for the spell to miss you completely - this is based on the difference between the level of the caster and the target.
You have a 4% chance of your spell missing a caster of equal level to you
You have a 5% chance of your spell missing a caster of +1 level higher than you
You have a 6% chance of your spell missing a caster of +2 levels higher than you
You have a 17% chance of your spell missing a caster of +3 levels higher than you
You have a 28% chance of your spell missing a caster of +4 levels higher than you
You have a 39% chance of your spell missing a caster of +5 levels higher than you
You have a 50% chance of your spell missing a caster of +6 levels higher than you
Each additional level difference adds +11% to the miss chance.
This percentage chance to 'miss' is then adjusted by any +Hit% gear that the caster might be wearing.
For example, casting against Ragnaros (L63) provides Ragnaros with a 17% chance to resist your spell completely. However if you were wearing 3% hit gear then your chance to miss becomes only 14%.
- The second resistance factor affecting spells is based on the level of the caster and the resistance level of the target to that type of magic.
Assuming you passed the 'miss' test and got a hit with your spell, the maximum
average resistance a target may ever have is 75%. The term average is used here because some non-damage spells (root/sheep etc) either miss or hit, for example you cannot resist 50% of a sheep spell! Damage spells will allow a resistance to either 100%, 75%, 50%, 25% or 0% of the spell damage. Combined, these two resistances (non-damage and damage) have a maximum average resistance of 75%. If your own resistance level achieves a 75% average resistance then you have a low chance of a spell not resisting any damage (ie it hits you for full damage), a slightly higher chance that you will resist 25% damage, a slightly better still chance that you will resist either 50% or 100% damage and the highest chance to resist 75% of the spell damage. (ie the weighted average comes from a normal distrubution curve). The forumla for Average Resistance is:
Average Resistance = [ Target Resistance/(Caster Level * 5) ] * 0.75
ie a L60 caster firing a spell at someone with 300 resistance will find that on average [300/(60*5)]*0.75 = 75% of the damage is resisted. Using the same mathematics shows it is pointless having more than 315 FR against Ragnaros as this will give you the maximum resistance possible. More FR would not increase your resistance!
If you put this formula into an excel spreadsheet you can easily plot a graph to show the average damage resisted of a player of a given level against a given level of resistance. The below graph (Source Wowwiki) shows a different average damage resisted levels against a L30, a L60 player and also against a L63 boss for varying degrees of resistance.
(http://www.deadmen.co.uk/images/Magicdamagereduction.gif)
Applying this to a fight like Huhuran you can also calculate how much damage a player can absorb before they will die. This
highlights how the effectiveness of resistance
increases exponentially as the total resistance increases. The below graph sets this out very well and also notes why we want all RG1 members to aim for at least 200 unbuffed NR for the Princess Huhuran fight.
(http://www.deadmen.co.uk/images/Magicdamagesoak.gif)
The above graph shows that someone with just 60 NR against a L63 boss would on average resist 20 nature damage for every 100 health points lost during the fight.
Increase the NR by 60 to a total of 120 means that the player would resist about 40 damage (an increase of 20) per 100 health points lost.
Increase the NR by 60 to a total of 180 means that the player would resist about 75 damage (an increase of 35) per 100 health points lost.
Increase the NR by 60 to a total of 240 means that the player would resist about 140 damage (an increase of 65) per 100 health points lost.
So the benefit of extra resistance increases as your resistance levels increase.[/LIST]
This is why we want everyone to make the effort for NR. Once you get your resistance to a decent level you start to reap huge resistance rewards - this means you last longer in fights - this means healers have less damage to heal - this means healers do not run out of mana as quickly - this means healers can heal more people during higher amounts of boss damage from their same mana pool - this means less people die - this means we kill more raid bosses faster.
So make the effort for your raid colleagues. One resistance 'slacker' will put a disproportionate load on the rest of the raid group and that's not fair on those that have made the effort.
TL.
TL - you have WAY too much time on your hands... :P
Nice to have the proof there tho ;)
Guys , it is realy for your best intrest to at least understand it....that way you can find out how much NR realy is needed.....
I love this text things, same as The Cauterizing Band ...because most of the time I do flahs heals and flash heals are 1.5s casting time. I only get a +43% of the total of +46 to healing... how come?
1,5s (flash heal) / 3.5s (longest casting time) = 43%
2,5s (holy light) / 3,5s = 71%
So that's why you not always getting the amount of +healing.....
But it still remains, how higher + healing the more you gain.
Good work TL...
Quote from: Knabbel;146963Guys , it is realy for your best intrest to at least understand it....that way you can find out how much NR realy is needed.....
I love this text things, same as The Cauterizing Band ...because most of the time I do flahs heals and flash heals are 1.5s casting time. I only get a +43% of the total of +46 to healing... how come?
1,5s (flash heal) / 3.5s (longest casting time) = 43%
2,5s (holy light) / 3,5s = 71%
So that's why you not always getting the amount of +healing.....
But it still remains, how higher + healing the more you gain.
Good work TL...
DoT recives the full ammount of healing/spell damage divided by the ticks of the spell
Nice explaination TL.
But for the lazy people that can't be bothered to read it all I'll summorize it :tongue: . If you got more then 200 NR you'll partialy (or fully) resist just about every nature spell. The chances you will receive full spell damage if you have more then 200 resistance are nearly negligible (around 1%). So this improves your chances to stay alive and reduces the strain on the healers considerably, since the incoming damage will be less 'spiky'.
Also note that the effect of every point of resistance becomes greater if you have more. For example the difference in damage mitigation between 250 and 300 resistance (33.3%) is far greater the between 50 and 100 resistance (14.3%). This is also shown in the second graph in TL's post.
Quote from: Sandrion;147041The chances you will receive full spell damage if you have more then 200 resistance are nearly negligible (around 1%).
Thanks for the praise, but I shoudl point out that this statement is incorrect. Someone with 200 NR will on average resist just under 50% of the nature damage thrown at them, not 100% or 99% even. Otherwise there would be no point in having 300 FR for example.
To see how much you might resist against a L63 boss then look at the first graph and track the RED line.
TL.
Or you can just read it as; get the Nature res so you don't end up plant food!
Quote from: TeaLeaf;147042Thanks for the praise, but I shoudl point out that this statement is incorrect. Someone with 200 NR will on average resist just under 50% of the nature damage thrown at them, not 100% or 99% even. Otherwise there would be no point in having 300 FR for example.
To see how much you might resist against a L63 boss then look at the first graph and track the RED line.
TL.
No TL, I think you misunderstood what I said. What I meant was that you have about 99% change that you either partially or fully resist the spell and only 1% change that you receive full spell damage.
There is an table on the official wow site which illustrates this: http://www.worldofwarcraft.com/info/basics/resistances.html
(Keep in mind that it shows resist% vs a level 50, but it's pretty close to what it looks like for a level 60).
Versus a level 60 mob you will have 50% average mitigation (with 200Res), like you stated.