Stun

“

▶️ You look stunned. — Sven

”

Stun is a status effect that completely locks down affected units, disabling almost all of its capabilities.

Mechanics

Stun overhead effects.
The yellow effect is used by bash abilities.

A stun on a unit is indicated by a special stunned animation (which every unit has, except for buildings and wards), and a whirling effect above their heads.

Upon getting stunned, the unit stops its current order and stands still until the effect expires. While stunned, the unit cannot move, attack, cast spells or use items. If a unit gets stunned during their attack or cast animations the attack/cast get canceled. This means stuns fully interrupt channeling spells. However, stuns do not make the unit forget their orders, including shift-queued orders. Once the stun expires, the unit resumes with its previously interrupted order, if it was not given any other order while stunned.

While stunned, the unit can be given any order normally, which it then executes as soon as the stun expires. If the order is not given via shift-queue, it overrides the unit's previously canceled order. If shift-queue is used, the unit executes the newly given order after finishing the previously canceled order. When giving the unit multiple cast orders, they get automatically queued up. However, move and attack commands do not get queued and cancel the cast orders. This means when giving the stunned unit a cast order and then a move order without using shift-queue, it will only execute the move order. Vice versa, when the move order is given first, and then the cast order, only the cast order gets executed. In order to make the unit execute move/attack and cast orders after the stun expires, shift-queue must be used.

Although the unit is unable to move, attack and cast spells while stunned, the effect does not count as a root, silence, mute or disarm, since these have some properties which stuns do not have. Some active abilities can be cast while stunned, which are listed here. Stuns do not disable any passive abilities and do not affect any of the unit's attributes and stats, such as vision.

Sources of stuns using stunned modifier

These abilities use all the same stunned modifier, meaning they do not place their own individual modifiers, but refresh each other.

• Alchemist - Unstable Concoction
  
  Min Duration: 150/220/290/360
  Max Duration: 0.25
  
• Anti-Mage - Mana Void
  
  Duration: 0.3 ( )
  
• Bounty Hunter - Shuriken Toss
  
  Duration: 100%
  
• Centaur Conqueror - War Stomp
  
  Hero Duration: 1.6
  Non-Hero Duration: 3
  
• Centaur Warrunner - Hoof Stomp
  
  Duration: 70/140/210/280 ( )
  
• Chaos Knight - Chaos Bolt
  
  Min Duration: 1.25/1.5/1.75/2 ( 1.85/2.1/2.35/2.6)
  Max Duration: 1.75/2.25/2.75/3.25 ( 2.35/2.85/3.35/3.85)
  
• Clockwerk - Battery Assault
  
  Duration: 1
  
• Clockwerk - Hookshot
  
  Duration: 1.2/1.4/1.6
  
• Clockwerk - Overclocking
  
  Duration: 125°
  Stuns the caster after the buff ends.
• Dark Willow - Cursed Crown
  
  Duration: 1.2/1.6/2/2.4 ( 1.7/2.1/2.5/2.9)
  
• Dragon Knight - Dragon Tail
  
  Duration: 70/100/130/160 ( )
  
• Earth - Hurl Boulder
  
  Duration: 1.6
  
• Earth Spirit - Rolling Boulder
  
  Duration: 1000 ( )
  
• Earthshaker - Aftershock
  
  Duration: 1/1.1/1.2/1.3
  
• Enigma - Malefice
  
  Duration: 0.3/0.5/0.7/0.9 ( )
  
• Fallen Sky - Fallen Sky
  
  Duration: 3
  
• Familiar - Stone Form
  
  Duration: 0.8/1/1.2
  
• Grimstroke - Ink Swell
  
  Max Duration: 1.3/1.8/2.3/2.8
  Stun duration scales up based on how much damage was dealt during its duration.
• Gyrocopter - Homing Missile
  
  Duration: 1.3/1.7/2.1/2.5 ( 1.6/2/2.4/2.8)
  
• Kunkka - Ghostship
  
  Duration:
  
• Leshrac - Split Earth
  
  Duration: 1.7
  
• Lina - Light Strike Array
  
  Duration: 1.3/1.6/1.9/2.2
  
• Luna - Lucent Beam
  
  Duration: 0.6 ( 0.9)
  
• Luna - Eclipse
  
  Stun duration per beam: 0.25
  
• Magnus - Reverse Polarity
  
  Duration: 2.5/3/3.5 ( 3.3/3.8/4.3)
  
• Meteor Hammer - Meteor Hammer
  
  Duration: 0.5
  
• Mirana - Sacred Arrow
  
  Min Duration: 0.01
  Max Duration: 2.6/3.4/4.2/5
  
• Mud Golem - Hurl Boulder
  
  Duration: 150
  
• Night Stalker - Void
  
  Duration: 0.1 ( 1)
  Only applies stun during nighttime.
• Nyx Assassin - Spiked Carapace
  
  Duration: 0.4/0.8/1.2/1.6 ( 0.85/1.25/1.65/2.05)
  
• Ogre Magi - Fireblast
  
  Duration: 1.2
  
• Ogre Magi - Unrefined Fireblast
  
  Duration: 150%
  
• Phoenix - Supernova
  
  Duration: 1.6/2/2.4 ( 2/2.4/2.8)
  
• Puck - Dream Coil
  
  Link Break Duration: 1.4/1.9/2.4 ( )
  
• Rubick - Telekinesis
  
  Lift Duration: 0.95/1.2/1.45/1.7 ( 1.35/1.6/1.85/2.1)
  Duration: 0.3
  
• Shard Golem - Hurl Boulder
  
  Duration: 150
  
• Slardar - Slithereen Crush
  
  Duration: 20/25/30/35
  
• Sniper - Assassinate
  
  Duration: 300/400/500 ( )
  
• Spirit Breaker - Charge of Darkness
  
  Duration: 1.2/1.5/1.8/2.1
  
• Sven - Storm Hammer
  
  Duration: 1/1.2/1.4/1.6 ( 2/2.2/2.4/2.6)
  
• Tusk - Snowball
  
  Duration: 0.6/0.8/1/1.2
  
• Vengeful Spirit - Magic Missile
  
  Duration: 1.4/1.5/1.6/1.7
  
• Warlock - Chaotic Offering
  
  Duration: 0.8
  
• Winter Wyvern - Splinter Blast
  
  Duration: ( 1.5)
  
• Witch Doctor - Paralyzing Cask
  
  Hero Duration: 0.8
  Creep Duration:
  
• Wraith King - Wraithfire Blast
  
  Duration: 25 ( )
  
• Zeus - Lightning Bolt
  
  Duration: 0.35 ( 0.85)
  

Sources of stuns using bashed modifier

These abilities use all the same bashed modifier, meaning they do not place their own individual modifiers, but refresh each other.

• Abyssal Blade - Bash
  
  Duration: 1.2
  
• Abyssal Blade - Overwhelm
  
  Duration: 1.6
  
• Doom - Infernal Blade
  
  Duration: 0.6 ( )
  Level multiplier bash duration bonus:
  Max stun Duration with all bonuses: 1.8
  
• Roshan - Bash
  
  Duration: 1.65
  
• Skull Basher - Bash
  
  Duration: 1.2
  
• Slardar - Bash of the Deep
  
  Duration: 2
  
• Templar Assassin - Meld
  
  Duration: ( 1)
  
• Tinker - Heat-Seeking Missile
  
  Duration: ( 0.2)
  

Sources of stuns using unique modifiers

These abilities use each a custom modifier, meaning each of them place their own modifiers on their targets.

• Ancient Apparition - Cold Feet
  
  Duration: 1.6/2/2.4/2.8
  
• Bane - Nightmare
  
  Duration: 15/25/35/45
  Sleep, effect ends on damage.
• Bane - Fiend's Grip
  
  Max Duration: 4.75/5.25/5.75 ( 7.75/8.25/8.75)
  Requires to be channeled to keep up.
• Batrider - Flaming Lasso
  
  Duration: 2.25/2.75/3.25
  
• Beastmaster - Primal Roar
  
  Primary Target Duration: 3/3.5/4
  Secondary Target Duration: 40%
  Uses stunned debuff on the primary target and a custom debuff on secondary targets.
• Clockwerk - Power Cogs
  
  Duration: 50/80/110/140
  
• Dark Seer - Vacuum
  
  Duration: 0.3/0.4/0.5/0.6
  
• Earth Spirit - Enchant Remnant
  
  Duration: 450
  Target is also hidden.
• Earthshaker - Fissure
  
  Duration: 0.8/1/1.2/1.4
  
• Elder Titan - Echo Stomp
  
  Duration: 2/2.8/3.6/4.4
  Sleep, effect ends after taking a certain amount of accumulated damage.
• Enigma - Black Hole
  
  Max Duration: 4
  
• Eul's Scepter of Divinity - Cyclone
  
  Duration: 2.5
  Affected unit is also invulnerable.
• Faceless Void - Time Lock
  
  Hero Duration: 0.5
  Non-Hero Duration:
  
• Faceless Void - Chronosphere
  
  Duration: 3.75/4.25/4.75
  Provided by an aura.
• Hoodwink - Bushwhack
  
  Duration: 0
  
• Invoker - Cold Snap
  
  Duration: 10 ( )
  
• Invoker - Tornado
  
  Duration: 1.2/1.4/1.6/1.8/2/2.2/2.4/2.6 ( )
  Affected units are also invulnerable.
• Jakiro - Ice Path
  
  Duration: 1.25/1.5/1.75/2 ( 1.65/1.9/2.15/2.4)
  
• Kunkka - Torrent
  
  Duration: 1.6 ( 2.08)
  
• Lion - Earth Spike
  
  Duration: 105/170/235/300
  
• Magnus - Skewer
  
  Max Duration: 0.95/1.03/1.11/1.18 ( 1.24/1.32/1.39/1.47)
  The caster is stunned during Skewer as well.
• Medusa - Mystic Snake
  
  Base Duration: 50% ( )
  Duration Increase Per Jump: 3 ( )
  
• Medusa - Stone Gaze
  
  Duration: 2/2.2/2.4
  
• Monkey King - Boundless Strike
  
  Duration: 0.7/0.9/1.1/1.3 ( 1/1.2/1.4/1.6)
  
• Monkey King - Tree Dance
  
  Duration:
  Stuns the caster when the perched tree is broken.
• Morphling - Adaptive Strike (Strength)
  
  Min Duration: 0.5 ( )
  Max Duration: 1.5/2/2.5/3 ( )
  
• Naga Siren - Song of the Siren
  
  Max Duration: 7
  Sleep, affected units are also invulnerable. Provided by an aura.
• Necrophos - Reaper's Scythe
  
  Duration: 1/2/3
  
• Nyx Assassin - Impale
  
  Duration: 1.1/1.4/1.7/2
  
• Outworld Destroyer - Astral Imprisonment
  
  Duration: 1.75/2.5/3.25/4
  Target is also hidden.
• Pangolier - Rolling Thunder
  
  Duration: 150.6
  
• Pudge - Meat Hook
  
  Max Duration: 0.9
  Only disables hooked enemies.
• Pudge - Dismember
  
  Max Hero Duration: 2.75 ( 3.5)
  Max Creep Duration: 5.5 ( 6.25)
  
• Sand King - Burrowstrike
  
  Duration: 1.2/1.4/1.6/1.8
  
• Shadow Demon - Disruption
  
  Duration:
  Target is also hidden.
• Shadow Shaman - Shackles
  
  Max Duration: 2.4/3/3.6/4.2 ( 3.4/4/4.6/5.2)
  
• Spirit Breaker - Greater Bash
  
  Duration: 143/152/158/162
  
• Storm - Cyclone
  
  Hero Duration: 5
  Non-Hero Duration: 16
  Affected unit is also invulnerable.
• Storm Spirit - Electric Vortex
  
  Duration: 180/220/260/300 ( )
  
• Tidehunter - Ravage
  
  Duration: 2/2.2/2.4
  
• Tiny - Avalanche
  
  Duration: 2
  Instances Interval: 0.3
  Avalanche Duration: 0.3
  
• Tiny - Toss
  
  Duration:
  
• Tusk - Walrus PUNCH!
  
  Duration: 2/3/4 ( )
  
• Tusk - Walrus Kick
  
  Duration: 6
  
• Windranger - Shackleshot
  
  Fail Duration: 0.6
  Success Duration: 1.6/2.1/2.6/3.1 ( 2.35/2.85/3.35/3.85)
  Uses stunned debuff for the failed duration, and a custom debuff for the success duration.
• Winter Wyvern - Cold Embrace
  
  Duration: 4
  
• Winter Wyvern - Winter's Curse
  
  Duration: 30% ( )
  

Sources of stuns disabling the caster

These abilities disable the caster upon applying their effects, to prevent them from moving during the effects. They all use custom modifiers.

• Alchemist - Chemical Rage
  
  Duration: 0.35
  Disables the caster during the transformation time.
• Chaos Knight - Phantasm
  
  Duration: 0.5
  
• Earthshaker - Enchant Totem
  
  Duration: ( 0.8)
  Disables the caster during the leap.
• Faceless Void - Time Walk
  
  Max Duration: 0 ( )
  Disables the caster during the jump.
• Lone Druid - True Form
  
  Duration: 1.933
  Disables the caster during the transformation time.
• Lycan - Shapeshift
  
  Duration: 1.1
  Disables the caster during the transformation time.
• Magnus - Skewer
  
  Max Duration: 0.95/1.03/1.11/1.18 ( 1.24/1.32/1.39/1.47)
  Disables the caster during the charge.
• Manta Style - Mirror Image
  
  Duration: 0.1
  Disables the caster during the split time.
• Monkey King - Tree Dance
  
  Duration: 1.29 ( 1.93)
  Disables the caster during the leaps.
• Monkey King - Primal Spring
  
  Duration: 0.77
  Disables the caster during the leap.
• Naga Siren - Mirror Image
  
  Duration: 0.5
  Disables the caster during the split time.
• Pangolier - Swashbuckle
  
  Duration: 0
  Disables the caster during the dash.
• Pangolier - Shield Crash
  
  Duration: 10
  Disables the caster during the jump when not used during Rolling Thunder.
• Phantom Lancer - Doppelganger
  
  Duration: 1
  Disables the caster during the hiding period.
• Pudge - Meat Hook
  
  Duration: 0.59
  Disables the caster during the cast backswing.
• Sand King - Burrowstrike
  
  Duration: 0.53
  Disables the caster during the cast backswing.
• Techies - Blast Off!
  
  Duration: 0.75
  Disables the caster during the jump.
• Terrorblade - Metamorphosis
  
  Duration: 0.35
  Disables the caster and all transforming illusions during the transformation time.
• Tusk - Snowball
  
  Max Duration: 3
  Disables all allies inside the Snowball until getting out of it. The caster is not disabled.

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