Illidan's Shear Ability

I was almost in a situation to tank Illidan last night and was questioning my ability to avoid Shear. How exactly does it work?

I am under the assumption the ability will not effect you if you block or completely avoid the attack, correct? I am also understanding you need an additional 5% cause he does not have a default 5% miss. So, to avoid Shear, you need 107.4%+ total avoidance.


So, Miss(from Defense), Dodge, Parry, and Block need to be over 107.4%? Is that correct?
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From what I understand, Shear cannot be subject to the 'miss' portion of your combat table, which is 5% + whatever you get from defense.

So, in order to guarantee not getting Sheared, your Dodge + Parry + Block must meet or exceed the 102.4% point.

I could be wrong on this, if so, someone who has actually tanked him can point it out.
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http://armory.worldofwarcraft.com/character-sheet.xml?r=Bleeding+Hollow&n=Chorus
Chorus <Dissension>, 70 Paladin of Bleeding Hollow

Last post mostly correct. This is covered in other threads though so you might want to do some reading first. It should also be noted that the mechanics of shear are not explicitly stated anywhere in the game files, the explanation of shear is entirely theoretical but it has been proven hundreds of times now so its generally accepted as correct:

* Shear is a special attack that cannot miss.
* Illidan is a level 73 NPC.
* Shear is applied when Illidan is performing the special attack and it lands without being blocked or avoided.
* The miss% accounted through the hit table of illidan against the tank considers both the 5% base miss chance as well as the miss chance added from your defense.

If you have about 10% total chance to be missed (base + your defense) and are at 102.4% uncrushable, then you need to make up for that 10% chance by having more block, dodge, or parry, as miss is not counted.
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I read the Illidan thread, but didnt see it stated.


Ok, so the ability can not miss at all. So, a tank would need like 113% total avoidance cause you would have ~10.5% miss.


Ok, thanks. I was not too sure about the Miss from Defense. I guess a miss is a miss, hehe.


Thanks again.
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Yep, and if you upgrade or change out your gear, make sure you recalculate where you need to be... the "uncrushable calculator" macro is great for this, as is TankPoints.

Don't be a nub like me and forget to change your libram >.<
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[img]http://www.wowsigs.com/sigs/24300/Earthen Ring/Aetherial.jpg[/img]

The tankadin mod ftw

http://www.failsafedesign.com/maintankadin/viewtopic.php?t=4659
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By the Power of Grey Skull!

As the Shear ability cannot miss and the 2,4% over 100% come from defense negated by weapon skill, you will only need 101.8% without miss to be immune to Shear.
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Cauze blizzard begins to let healing suck.

do you use holy shield when he casts shear? or do you try to have an 100% uptime.

i got 2 very unlucky shears today between hs fade an hs gain (combat log said both happened
in the same moment.. with me beeing affected by shear 0.02seconds later )
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I generally go for 100% uptime, but yeah I've had that happen.

Unless he's enraged, Shear isn't a wipe, it's just taxing on your healers, and I'd rather have the extra threat and mitigation all the time.
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The danger must be growing, for the rowers keep on rowing!

I keep holy shield up 100% of the time aswell, you have to be very unlucky to get hs down > shear > hs up
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LoL, a paladin tank!

I keep it up probably 95% of the time, I occasionally delay recasting a second to make sure that HS is staggered enough to prevent an unlucky recast/Shear combo.

When we were first learning the fight, I ate a couple of Shears due to the recast/Shear badness... our healers didn't deal with it very well (i.e. I went down faster than... well, use your favorite mom reference here), so at least for my guild, I'll trade the missed second or so of HS coverage to prevent what tends to be a guaranteed tank death for us.

That being said, eventhough I know that I'm protected, my bladder still jerks every time I see Shear casting. It's kind of like that little quiver women get when their period is a day late despite The Pill, condoms, and having the poor guy pull out... or the one that guys get when their girlfriend calls up and says "honey, I'm late..."
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[img]http://www.wowsigs.com/sigs/24300/Earthen Ring/Aetherial.jpg[/img]

I made this macro to test if you were able to beat shears. It is basically the same as the crushing blow macro but adapted to check shear uncrushability.

Remember to debuff, hit HS and then hit macro


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/script DEFAULT_CHAT_FRAME:AddMessage("Need 101.8 combined avoidance to beat SHEAR. Currently at:",0.8,0.8,1)
/script DEFAULT_CHAT_FRAME:AddMessage(GetDodgeChance()+GetBlockChance()+GetParryChance())
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I got sheared once between HS down/up but healers healed and I hit LoH for extra security. I was not watching Illidan casting as I tried to move far enough for priests to send in shadow fiends. Lesson learnt.