View source for Stun

{{for|the support gem|Stun Support}}

Whenever a player or [[monster]] takes [[damage]] from a [[hit]], there is a chance they will be stunned. A '''stun''' interrupts whatever that creature was doing while a brief animation is played.

Neither [[damage over time]] nor [[reflect]] can cause stun.<ref name="dotStun"/>

==Mechanics{{anchor|StunRecovery}}{{anchor|StunDuration}}==
{{redirect|Stun Duration|the passive skill|Stun Duration (passive skill)}}<!--
{{redirect|Stun Recovery|the passive skill|Stun Recovery (passive skill)}}-->

The chance to stun is based off the damage done in a single hit compared to the target's maximum [[life]]. The default length of stuns is '''350ms'''.<ref name="StunMechanics"/>  A significantly long stun duration ('''700+ ms''') will also display a swirling circle above the character or monster.<ref name="StunVisual"/> 

The duration of stuns can be altered by {{c|mod|increased Block and Stun Recovery}}, {{c|mod|increased Stun Duration on enemies}}, {{c|mod| increased Stun Duration with Two Handed Melee Weapons on enemies}} and similar modifiers.

Stun duration can be calculated using the following formula:<ref name="StunMechanics"/>
{{math|nr=1|formula=
\text{ Stun duration } [ms] = 350 \times {100 + \text{Attacker's increased stun duration} \over 100 + \text{Defender's increased stun recovery} }
}}

Whether or not a stun occurs can be calculated using the following formula:<ref name="StunMechanics"/>
{{math|nr=2|formula=
\text{ Stun chance } [%] = 200 \times {\text{Damage} \over \text{Defender's effective max life} }
}}

Where {{math|\text{Defender's effective max life} }} in equation {{EquationNote|2}} is what the maximum life of the creature would be in a single-player map. Increases to monster life from a [[party]] of more than one player do not affect {{math|\text{Defender's effective max life} }}. For a player with [[Chaos Inoculation]], their {{math|\text{Defender's effective max life} }} is whatever their maximum life would be if they did not have Chaos Inoculation.<ref name="StunMechanics" />

If the chance to stun would be less than or equal to 20%, it is ignored,<ref name="stunThreshold"/> so you need to deal more than 10% of effective maximum life to have a chance to stun. Dealing at least 50% of maximum life will always stun.

Melee damage have a +25% bonus to stun chance and non-physical damage have a -25% penalty to stun chance. Both of these will cancel each other out. Therefore, Damage can be calculated as the following:
{{math|nr=2|formula=
\text{ Damage } = {(\text{Melee Physical Damage} \times 1.25) + \text{Melee Non-Physical Damage} + \text{Non-Melee Physical Damage} + (\text{Non-Melee Non-Physical Damage} \times 0.75)  }
}}

===Stun threshold{{anchor|StunThreshold}}===
Reduced stun threshold modifiers reduce the value of {{math|\text{Defender's effective max life} }}. For example, {{c|mod|25% reduced Enemy Stun Threshold}} means the enemy will be treated as if their {{math|\text{Defender's effective max life} }} is only 75% as much as it actually is, increasing the chance that the enemy will be stunned.<ref name="StunMechanics"/>

When the total Stun Threshold Reduction would be over 75%, it is instead treated as being:
{{math|nr=3|formula=
75 + 25 \times {(\text{Stun Threshold Reduction} - 75) \over (\text{Stun Threshold Reduction} - 50) }
}}

The net effect on the mean number of stuns during a monster's lifetime is as follows:
* Hyperbolic regime: From 0 to 75% Reduced Stun Threshold, the mean number of stuns per lifetime increases from 2 to 8, accelerating as it goes.
* Linear regime: Every 3.125% Reduced Stun Threshold past 75% increases the mean number of stuns per lifetime by 1.

{{cot|Example|1}}
If a player has a total of {{c|mod|110% reduced Enemy Stun Threshold}} from gear and skills, the actual value according to equation {{EquationNote|3}} that gets used would be:
{{math|formula= 75 + 25 \times {(110 - 75) \over (110 - 50)}  }} = {{c|mod|{{#expr: 75 + 25 * (110 - 75) / (110 - 50) round 1}} reduced Enemy Stun Threshold}}


{| class="wikitable" style="text-align: center"
! {{abbr|Reduced threshold|Reduced enemy stun threshold}}
! {{abbr|Eff. reduced threshold|Effective reduced enemy stun threshold}}
! {{abbr|Min life for stun|Minimum percentage of life a hit needs to deal to stun}}
! {{abbr|Min life for 100% stun|Percentage of Life a hit needs to deal to have 100% stun chance}}
|-
| 0% || 0% || 10% || 50%
|-
| 5% || 5% || 9.5% || 47.5%
|-
| 10% || 10% || 9% || 45%
|-
| 15% || 15% || 8.5% || 42.5%
|-
| 20% || 20% || 8% || 40%
|-
| 25% || 25% || 7.5% || 37.5%
|-
| 30% || 30% || 7% || 35%
|-
| 35% || 35% || 6.5% || 32.5%
|-
| 40% || 40% || 6% || 30%
|-
| 45% || 45% || 5.5% || 27.5%
|-
| 50% || 50% || 5% || 25%
|-
| 55% || 55% || 4.5% || 22.5%
|-
| 60% || 60% || 4% || 20%
|-
| 65% || 65% || 3.5% || 17.5%
|-
| 70% || 70% || 3% || 15%
|-
| 75% || 75% || 2.5% || 12.5%
|-
| 80% || 79.2% || 2.08% || 10.4%
|-
| 85% || 82.1% || 1.79% || 9%
|-
| 90% || 84.4% || 1.56% || 7.8%
|-
| 95% || 86.1% || 1.39% || 7%
|-
| 100% || 87.5% || 1.25% || 6.25%
|-
| 105% || 88.6% || 1.14% || 5.7%
|-
| 110%  || 89.6% || 1.04% || 5.2%
|-
| 115%  || 90.4% || 0.96% || 4.8%
|-
| 120%  || 91.1% || 0.89% || 4.5%
|-
| 125%  || 91.7% || 0.83% || 4.2%
|-
| 130% || 92.2% || 0.78% || 3.9%
|-
| 135% || 92.6% || 0.74% || 3.7%
|-
| 140% || 93.1% || 0.69% || 3.5%
|-
| 145% || 93.4% || 0.66% || 3.3%
|-
| 150% || 93.8% || 0.62% || 3.1%
|}
{{cob}}

===Stuns versus unique bosses===
Unique bosses, such as [[Shaper]], [[The Elder]], [[Guardians of the Void]], [[Elder Guardians]], and [[Sirus, Awakener of Worlds]] become immune to stuns while stunned, and for 4 seconds after the fact.

===Avoiding stun===
There are [[passive skill]]s and item modifiers that grant a chance to avoid becoming stunned:
* As long as a creature has greater than 0 [[energy shield]], it has a 50% chance to ignore a stun.<ref name="cite2"/> This is calculated independently of the creature's chance to be stunned. First the chance to stun is calculated as normal, and if the stun check succeeds and would cause a stun, there is then a 50% chance that the stun can be ignored. An attack that removes energy shield can have its stun avoided, even though energy shield is 0 after damage is applied. Players lose this chance to ignore a stun with the [[Eldritch Battery]] keystone node.<ref name="cite7"/>
* The modifier {{c|mod|+#% chance to Avoid being Stunned}}.
* The modifier {{c|mod|+#% chance to Avoid interruption from Stuns while Casting}}.

The above modifiers are not doing the same thing, and apply at different times. They are not additive with each other.<ref name="AvoidStun"/><ref name="AvoidStunCasting"/>

{{cot|Example|2}}
A character with considerable amount of [[energy shield]] is continuously casting a spell. The character has following mods:

* {{c|mod|+38% chance to Avoid being Stunned}}
* {{c|mod|+25% chance to Avoid interruption from Stuns while Casting}}

When the character then gets [[hit]] that normally would cause a stun. However, due to all the avoidance modifiers the actual chance to become stunned is:
{{math|formula=
(1 - 0.50) \times (1 - 0.38) \times (1 - 0.25) = {{#expr: ( (1 - 0.5) * (1 - 0.38) * (1 - 0.25) ) * 100 round 2}}%
}}

{{cob}}

==Active skill gems==
{{main|List of stun related skill gems}}
{{#lst:List of stun related skill gems|active_skill_gems}}
==Support skill gems==
{{main|List of stun related skill gems}}
{{#lst:List of stun related skill gems|support_skill_gems}}

==Base items==
===One Hand Maces===
{{Query base items
|tables=item_stats
|join=items._pageID=item_stats._pageID
|where=
    item_stats.id LIKE "%stun%"
    AND items.class = "One Hand Maces"
|level=1
|stat_column1_header=Stun Threshold
|stat_column1_stat_format=add
|stat_column1_format=%s%%
|stat_column1_stat1_id=base_stun_threshold_reduction_+%
}}
===Two Hand Maces===
{{Query base items
|tables=item_stats
|join=items._pageID=item_stats._pageID
|where=
    item_stats.id LIKE "%stun%"
    AND items.class = "Two Hand Maces"
|level=1
|stat_column1_header=Stun Duration
|stat_column1_stat_format=add
|stat_column1_format=%s%%
|stat_column1_stat1_id=base_stun_duration_+%
}}
===Other items===
{{Query base items
|tables=item_stats
|join=items._pageID=item_stats._pageID
|where=
    item_stats.id LIKE "%stun%"
    AND items.class NOT IN ("One Hand Maces", "Two Hand Maces")
|large=1
|level=1
|stat=1
}}

==Unique items==
Only unique items that add explicit stun-related stats are listed here.
===Global stun threshold===
{{Query unique items
|tables=item_stats
|join=items._pageID=item_stats._pageID
|where=
  item_stats.is_implicit=0
  AND item_stats.id = "base_stun_threshold_reduction_+%"
|level=1
|stat_column1_header=Threshold
|stat_column1_stat_format=add
|stat_column1_format=%s%%
|stat_column1_stat1_id=base_stun_threshold_reduction_+%
}}
===Local stun threshold===
{{Query unique items
|tables=item_stats
|join=items._pageID=item_stats._pageID
|where=
  item_stats.is_implicit=0
  AND item_stats.id = "local_stun_threshold_reduction_+%"
|level=1
|stat_column1_header=Threshold
|stat_column1_stat_format=add
|stat_column1_format=%s%%
|stat_column1_stat1_id=local_stun_threshold_reduction_+%
}}
===Stun duration===
{{Query unique items
|tables=item_stats
|join=items._pageID=item_stats._pageID
|where=
  item_stats.is_implicit=0
  AND item_stats.id = "base_stun_duration_+%"
|level=1
|stat_column1_header=Duration
|stat_column1_stat_format=add
|stat_column1_format=%s%%
|stat_column1_stat1_id=base_stun_duration_+%
}}
===Stun recovery===
{{Query unique items
|tables=item_stats
|join=items._pageID=item_stats._pageID
|where=
  item_stats.is_implicit=0
  AND item_stats.id = "base_stun_recovery_+%"
|level=1
|stat_column1_header=Recovery
|stat_column1_stat_format=add
|stat_column1_format=%s%%
|stat_column1_stat1_id=base_stun_recovery_+%
}}
===Effects when enemy is stunned===
{{Query unique items
|tables=item_stats
|join=items._pageID=item_stats._pageID
|where=
  item_stats.is_implicit=0
  AND item_stats.id LIKE "%on\_%stun%"
|large=1
|level=1
|stat=1
}}
===Stun avoidance===
{{Query unique items
|tables=item_stats
|join=items._pageID=item_stats._pageID
|where=
  item_stats.is_implicit=0
  AND item_stats.id LIKE "%avoid%stun%"
|large=1
|level=1
|stat=1
}}
===Stun immunity===
{{Query unique items
|tables=item_stats
|join=items._pageID=item_stats._pageID
|where=
  item_stats.is_implicit=0
  AND item_stats.id LIKE "%cannot_be_stunned%"
  OR item_stats.id LIKE "%kiara%"
|large=1
|level=1
|stat=1
}}

===Other===
{{Query unique items
|tables=item_stats
|join=items._pageID=item_stats._pageID
|where=
  item_stats.is_implicit=0
  AND item_stats.id LIKE "%stun%"
  AND item_stats.id NOT LIKE "%on\_%stun%"
  AND item_stats.id NOT LIKE "%avoid%stun%"
  AND item_stats.id NOT LIKE "%cannot_be_stunned%"
  AND item_stats.id != "base_stun_threshold_reduction_+%"
  AND item_stats.id != "local_stun_threshold_reduction_+%"
  AND item_stats.id != "base_stun_duration_+%"
  AND item_stats.id != "base_stun_recovery_+%"
  OR items.stat_text LIKE "%Unwavering%Stance%" 
|large=1
|level=1
|stat=1
}}

==Passive skills==
===Stun Recovery===
{{Query base passive skills
|where=
  passive_skill_stats.id = "base_avoid_stun_%"
}}

===Increased Stun Threshold===
{{Query base passive skills
|where=
  passive_skill_stats.id = "stun_threshold_+%"
}}

===Chance to avoid being Stunned===
{{Query base passive skills
|where=
  passive_skill_stats.id = "base_avoid_stun_%"
}}

===Chance to avoid interruptions from Stuns while Casting===
{{Query base passive skills
|where=
  passive_skill_stats.id = "avoid_interruption_while_casting_%"
}}

===Reduced Enemy Stun Threshold===
{{Query base passive skills
|where=
  passive_skill_stats.id LIKE "%stun_threshold_reduction_+%"
}}

{{Query ascendancy passive skills
|where=
  passive_skill_stats.id LIKE "%stun_threshold_reduction_+%"
}}

=== Stun Duration on Enemies ===
{{Query base passive skills
|where=
  passive_skill_stats.id LIKE "%stun_duration%"
}}

{{Query ascendancy passive skills
|where=
  passive_skill_stats.id LIKE "%stun_duration%"
}}
===Stun immunity===
{{Query ascendancy passive skills
|where=
  passive_skill_stats.id LIKE "%cannot_be_stunned%"
  OR passive_skill_stats.id LIKE "%immune_to_stun%"
}}

{{Query keystone passive skills
|where=
  passive_skills.stat_text LIKE "%Cannot be stunned%"
}}
===Miscellany===
These passive skills are related to stun, but do not fit in any other category:
{{Query base passive skills
|where=
  passive_skill_stats.id LIKE "%stun%"
  AND passive_skill_stats.id NOT LIKE "%stun_threshold_reduction_+%"
  AND passive_skill_stats.id NOT LIKE "%stun_duration%"
  AND passive_skill_stats.id NOT LIKE "%cannot_be_stunned%"
  AND passive_skill_stats.id NOT LIKE "%immune_to_stun%"
  AND passive_skill_stats.id NOT IN ("base_avoid_stun_%", "base_stun_recovery_+%", "stun_threshold_+%")
}}

{{Query ascendancy passive skills
|where=
  passive_skill_stats.id LIKE "%stun%"
  AND passive_skill_stats.id NOT LIKE "%stun_threshold_reduction_+%"
  AND passive_skill_stats.id NOT LIKE "%stun_duration%"
  AND passive_skill_stats.id NOT LIKE "%cannot_be_stunned%"
  AND passive_skill_stats.id NOT LIKE "%immune_to_stun%"
  AND passive_skill_stats.id NOT IN ("base_avoid_stun_%", "base_stun_recovery_+%", "stun_threshold_+%")
}}
===Cluster jewel passives===
The following [[cluster jewel]]-only passives are related to stun:
{{Passive skill table
|q_where=
  passive_skills.id LIKE "affliction%"
  AND passive_skills.stat_text LIKE "%stun%"
|large=1
|stat_text=1
}}

==Version history==
{{Version history table header}}
{{Version history table row|3.11.0}}
* Many bosses are now immune to stun while stunned and for a short time after the stun ends.
{{Version history table row|3.7.0}}
* Melee damage is now treated as having dealt +25% damage for the sake of calculating Stuns.
* Elemental and Chaos damage is treated as having dealt -25% damage for the sake of stuns. This is additive with the Melee damage stun bonus, so a purely Elemental or Chaos or mixed non-physical Melee hit will see no change to previous Stun behaviour.
|}

==References==
{{reflist|refs=
<ref name="StunMechanics">{{cite web|author=Malice|date=November 13, 2011|title=Mechanics Thread|url=http://www.pathofexile.com/forum/view-thread/11707#p216024|publisher=Path of Exile Forum|accessdate=October 20, 2013}}</ref>
<ref name="cite2">{{cite web|author=Mark_GGG|date=October 25, 2012|title=Stun and Reduced Stun Threshold: the quick and dirty way|url=http://www.pathofexile.com/forum/view-thread/54413/page/3#p686694|publisher=Path of Exile Forum|accessdate=October 20, 2013}}</ref>
<ref name="stunThreshold">{{cite web|author=Mark_GGG|date=August 21, 2013 5:23 AM|title=Vulnerability's additional chance to stun not applying|url=http://www.pathofexile.com/forum/view-thread/503969/page/1#p4479372|publisher=Path of Exile Forum|accessdate=August 21, 2013}}</ref>
<ref name="dotStun">{{cite web|author=Mark_GGG|date=July 14, 2014|title=Possible to stun yourself on reflect with vulnerability?|url=http://www.pathofexile.com/forum/view-thread/969535/p8227092#p8227092|publisher=Official Path of Exile Forums|accessdate=November 26, 2014}}</ref>
<ref name="cite7">{{cite web|author=Rory|date=April 18, 2015|title=A potential change I'm keen to hear your thoughts on|url=https://www.pathofexile.com/forum/view-thread/1247469|publisher=Path of Exile Forum|accessdate=March 14, 2016}}</ref>
<ref name="AvoidStun">{{cite web|author=Mark_GGG|date=July 16, 2013|title=Energy Shield's Chance to Ignore Stun is not additive with Chance to Avoid Stun|url=https://www.pathofexile.com/forum/view-thread/464831/page/47#p4108429|publisher=Path of Exile forum|accessdate=February 3, 2016}}</ref>
<ref name="AvoidStunCasting">{{cite web|author=milesmeloro|date=July 17, 2013|title=Energy Shield's Chance to Ignore Stun is not additive with Chance to Avoid Stun|url=https://www.reddit.com/r/pathofexile/comments/1ih5rf/|publisher=Path of Exile subforum|accessdate=February 3, 2016}}</ref> 
<ref name="StunVisual">{{cite web|author=Mark_GGG|date=July 13, 2017|title=Stun Buff - Any chance for that? |url=https://www.reddit.com/r/pathofexile/comments/6mudbb/stun_buff_any_chance_for_that/dk54maj/|publisher=Path of Exile subreddit|accessdate=July 13, 2017}}</ref> 

}}

[[Category:Game mechanics]]
[[ru:Оглушение (механика)]]