Types of Crowd Control

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Crowd Control	Movement	Attacking	Abilities	Interrupt	Spells	Reduction	Removal
Airborne	Blocked	Blocked	Blocked	Yes	Blocked	Partial	with dash/blink
Blind	Allowed	Miss	Allowed	No	Allowed	Yes
Cripple	Allowed	Reduced	Allowed	No	Allowed	Yes
Disarm	Allowed	Blocked	Allowed	No	Allowed	Yes
Charm /  Flee /  Taunt Forced Action	Blocked	Blocked	Blocked	Yes		Yes
Ground	Partial	Allowed	Partial	See notes		No
Nearsight	Allowed	Allowed	Partial	See notes		No
Root	Blocked	Allowed	Allowed	See notes		Yes
Silence	Allowed	Allowed	Blocked	Yes		Yes
Sleep	Blocked	Blocked	Blocked	Yes		Yes
Slow	Reduced	Allowed	Allowed	No	Allowed	Yes
Stasis	Blocked	Blocked	Blocked	Yes	Blocked	No	None
Stun	Blocked	Blocked	Blocked	Yes		Yes
Suppression	Blocked	Blocked	Blocked	Yes	Blocked	No

Notes

• Movement includes basic movement and mobility abilities (i.e.  dashes and  blinks, such as Ezreal's Arcane Shift).
  •  Ground does not impede basic movement.
• Attack refers to a champion's basic attacks (by default right-click).
• Ability refers to a champion's castable spells (by default , , , and ).
• Spells refer to summoner spells.
• Actives refer to items with actives.
• Interrupt refers to whether or not the effect will cancel channeled abilities.
  •  Roots and  Entangles will not interrupt channeling, with the exception of movement channels.
  •  Nearsight prevents the activation of "long ranged" abilities, which seems to include any ability that can input targets via the minimap.
  •  Knockdown and  Ground only interrupt  dash and  blink abilities, however there are some exceptions to specific dash abilities ( Sweeping Blade).
• Crowd control applied by one's self or an ally cannot be countered in any way (neither reduced, resisted, nor removed), with the exception of self  slows ( Pyke's Bone Skewer, Rammus' Defensive Ball Curl, Galio's Shield of Durand) which are reduced by  slow resist.
•  Brittle is a unique form of crowd control that can only be applied by Ornn. It reduces a unit's effective  tenacity by 30% and can be consumed by  immobilizing effects as well as increasing the duration of  airborne effects. It cannot be removed by any  cleansing effects once it has affected the target.
•  Forced Action crowd control effects end prematurely if the Source is  killed.

Airborne

EditA unit is made airborne alongside undergoing a forced displacement in a specified direction or to a specific point. For the duration, the unit is also  stunned and cannot move, attack, cast abilities, activate items or use the summoner spells Flash and Teleport.

Interrupts:	The accompanying  stun interrupts all  channeled and charged abilities, as well as Anivia's Glacial Storm. The accompanying displacement interrupts all  dashes and overrides previous airborne effects.
Reduction:	Airborne duration and forced movement's execution time are unaffected by  Tenacity.
Resist:	Resisted by  crowd control immunity and  Unstoppability.
Removal:	The forced movement that comes with airborne effects cannot be removed by cleansing effects. However,  Cleanses can be used to remove the underlying  stun, allowing the user to cast abilities: a dash or blink ability can be used to overrule the forced movement. Note that Cleanse, specifically, cannot be used to do this.

To expand upon the countering of airborne effects, consider that the effects are made up of two components: a movement modifier (called a "move block" by Riot, referring to a chunk of code) and a stun (which is responsible for disabling the actions of attacking and casting). As a general rule, the most recent move block will over-rule any previous move blocks, which is how Alistar's Headbutt and Pulverize combo functions. This rule also extends to all beneficial movement modifiers, such as  dashes and  blinks, which is why Rocket Grab and Rocket Jump will over-rule each other depending on their order of activation. Most beneficial movement modifiers do not prevent the activation of abilities, allowing Tristana to still activate abilities during Rocket Jump but not during Rocket Grab.

• Through the use of  cleansing effects or  tenacity, players can remove the stun and subsequently activate abilities such as Flash or champion-specific dashes to break the airborne's move block.
  • Note that Cleanse is special-cased to not remove the stunning effects of airborne, but is still available to cast. One or the other may be a bug.
• In some instances, the stun duration is longer than the move block (e.g. Sion's Unstoppable Onslaught), but in most cases they are the same duration. There have been cases in the past where the stun duration was shorter, but this usually lead to bug-like interactions and was later "fixed" (e.g. Azir's Emperor's Divide did not apply any stun at all in the initial charge on the ability, which allowed his enemies to use an instant movement ability to supersede the charge's knockback and get over the wall).

Knock Aside

• The target is made  airborne in a direction perpendicular from the source.
• Champions with knock aside: Corki, Draven, Urgot (minions and monsters only), Taliyah, Vi.
• Monsters with knock aside: Rift Herald.

Knockback

• The target is made  airborne in a direction directly away from the point of cast.
• Champions with knockback: Aatrox (champions and large monsters), Anivia, Alistar, Aurelion Sol, Azir, Camille, Fizz, Gnar, Gragas, Graves (minions and monsters only), Hecarim, Janna, Jarvan IV, Jayce, Kled, Lee Sin, Maokai, Ornn, Poppy, Quinn, Rammus, Shyvana, Syndra, Sion (minions and monsters only), Taliyah, Thresh, Tristana, Trundle, Vayne, Vel'Koz,  Vi,  Xin Zhao, Yorick, Zac,  Ziggs.
• Monsters with knockback: Baron Nashor, Dragon, Rift Herald.

Knockup

• The target is made  airborne on the spot.
• Champions with knockup: Aatrox, Alistar, Blitzcrank, Braum, Cho'Gath, Fizz, Galio, Ivern, Janna, Jarvan IV, Kalista, Lee Sin, Lulu, Malphite,  Nami,  Nautilus, Ornn, Poppy, Rakan, Rek'Sai,  Riven, Rhaast, Sion, Sejuani,  Taliyah, Vi,  Wukong, Xin Zhao, Yasuo, Zac, Zyra.
• Monsters with knockup: Baron Nashor.

Pull

• The target is made  airborne in a direction toward the point of cast, and in some cases over the point of cast.
• Champions with pull: Aatrox (champions and large monsters), Blitzcrank, Darius, Diana, Kled, Orianna, Mordekaiser, Nautilus, Pyke, Sett, Singed, Sion, Skarner, Syndra (minions and monsters only), Thresh, Urgot, Vi (non-champions only), Viktor, Volibear.

Blind

EditA unit that is blinded will "Miss" their basic attacks, similar to when attacking a target with dodge. Missed attacks will fail to deal damage or apply on-hit effects, with the exception of some empowered attacks. Unlike  Disarm, Blind does not prevent the unit from declaring attacks.

Blind causes Graves' shotgun to fire pellets with a random spread, excluding the direction of his target.

Interrupts:	Does not interrupt any abilities, but will prevent on-hit effects from being triggered. This does not consume the effects, however, (provided they are consumed on-hit) and they will simply wait until a successful attack lands or their buff times out.
Reduction:	The duration is reduced by  Tenacity.
Resist:	Resisted by  crowd control immunity.  Unstoppable units will ignore the effects of Blind for the duration of the unstoppability, but will be affected afterwards if the disable duration permits.
Removal:	Removed by  Cleanses, with the exception of Mikael's Crucible.

• Champions with blind: Teemo.
• Thornmail's passive deals magic damage before the damage is reduced by any effect, including blind. So it still applies if the target is blinded.
• Blinded enemies will only miss if they attack while blinded; ranged units still hit if the projectile fires before the blind.

Cripple

EditA unit that is crippled has reduced attack speed for the duration.

Interrupts:	Does not interrupt any abilities.
Reduction:	The duration is reduced by  Tenacity.
Resist:	Resisted by  crowd control immunity and Master Yi's Highlander, Kayn's Upgraded Shadow Step and Sejuani's Fury of the North.
Removal:	Removed by  Cleanses and specifically Master Yi's Highlander and Kayn's Upgraded Shadow Step.

• Champions with cripple: Fiora, Malphite, Nasus
• Items with cripple: Frozen Heart, Randuin's Omen, Thornmail, Warden's Mail

Disarm

EditA unit that is disarmed is unable to declare basic attacks.

Interrupts:	PENDING FOR TEST: Interrupts basic attack windups.
Reduction:	The duration is reduced by  Tenacity.
Resist:	Resisted by  crowd control immunity.  Unstoppable units will ignore the effects of Disarm for the duration of the unstoppability, but will be affected afterwards if the disable duration permits.
Removal:	Removed by  Cleanses, excluding Mikael's Crucible.

• Champions with disarm: Aphelios (self), Camille (self), Darius (self),  Kai'Sa (self), Kennen (self), Quinn (non-champions only).
  • Reloading is mechanically similar to being disarmed, which is featured on Graves and Jhin.

The following crowd control types combine Disarm with another crowd control type:

•  Entangle combines the effects of  Root and Disarm.
  • Champions with entangle: Amumu.
•  Pacify combines the effects of  Silence and Disarm.
  • Champions with pacify: Aatrox (self), Kayn (self), Lulu (also polymorphs the target), Vi (self),  Warwick (self), Varus (self), Vladimir (self), Xerath (self).
  • Items with pacify: Zhonya's Hourglass, Zhonya's Paradox

Disrupt

EditWhen a unit is disrupted, it has their  channeled and charged abilities interrupted. Unlike  Silence, the unit can still cast abilities.

Disrupt is not and does not apply a  status effect.

Interrupts:	Interrupts all  channeled and charged abilities with the exception of Lucian's The Culling. It will also interrupt Anivia's Glacial Storm.
Reduction:	The effect is instantaneous. There is nothing to reduce.
Resist:	Resisted by  Cc-immune and  Unstoppable units.
Removal:	The effect is instantaneous. There is nothing to remove.

• Champions with disrupt: Kassadin, Viktor, Camille.

Forced action

Charm

For the item, see Faerie Charm

EditA unit that is charmed will walk toward the Source (the unit that casted the Charm spell) for the duration, during which time they cannot control their own movement or attacks, and cannot cast abilities, activate items or use the summoner spells Flash and Teleport. All charms also apply a  slow.

The strength of the  slow that accompanies Charm depends on the spell:

• Ahri's Charm slows by 65%.
• Evelynn's Allure slows by 65%.
• Rakan's The Quickness slows by 75%.

Interrupts:	Interrupts all channeled and charged abilities, as well as Anivia's Glacial Storm. It will also interrupt Rakan's Grand Entrance and Battle Dance, Yasuo's Sweeping Blade and prevent Gnar's Hop from bouncing.
Reduction:	The duration is reduced by  Tenacity. The  slow is also weakened by Slow resist.
Resist:	Resisted by  crowd control immunity.  Unstoppable dashes will ignore the effect for the duration of the unstoppability, but the target will be affected afterwards if the disable duration permits. The slow is also resisted by Slow immunity.
Removal:	Removed by  Cleanses or when the Source dies.

• Champions with charm: Ahri, Evelynn, Rakan.

Fear / flee

EditA  champion that is fleeing or feared will move directly away from the Source (the unit that casted the Fear spell) for the duration, during which time they cannot control their own movement or attacks, and cannot cast abilities, activate items or use the summoner spells Flash and Teleport. All fears also apply a  slow.  Non-champions affected by Fear will instead move around aimlessly or stand immobilized.

The strength of the  slow that accompanies Fear depends on the spell, usually being between 75% and 90%.

Interrupts:	Interrupts all channeled and charged abilities. It will also interrupt Sweeping Blade and prevent Hop from bouncing.
Reduction:	The duration is reduced by  Tenacity. The  slow is also weakened by Slow resist.
Resist:	Resisted by  crowd control immunity.  Unstoppable dashes will ignore the effect for the duration of the unstoppability, but the target will be affected afterwards if the disable duration permits. The slow is also resisted by Slow immunity.
Removal:	Removed by  Cleanses or when the Source dies.

• Champions with flee: Aatrox (non-champions only), Darius (non-champions only), Fiddlesticks, Hecarim, Nocturne, Shaco, Urgot, Volibear (non-champions only), Warwick.
  • Uniquely to Volibear, fear slows the target by 100% which causes it to stay in place and turn around aimlessly instead of away from the Source.

List of the slow strength of each Fear:

• Aatrox's World Ender slows ( non-champions only) by up to 99%.
• Darius' Noxian Guillotine slows ( non-champions only) by up to 99%.
• Fiddlesticks' Terrify slows by 90%.
• Hecarim's Onslaught of Shadows slows by up to 99%.
• Nocturne's Unspeakable Horror slows by 90%.
• Shaco's Jack in the Box reduces the  movement speed of fleeing  champions to a static 100 and  non-champions to a static 60.
• Urgot's Successful Mercy slows by 75%.
• Volibear's Majestic Roar slows ( non-champions only) by 100%, causing their  movement speed to drop to 0.
• Warwick's Primal Howl slows by 90%.

Taunt

EditA unit that is taunted will attempt to perform basic attacks on the Source (the unit that casted the Taunt spell) for the duration, during which time they cannot control their own movement or attacks, and cannot cast abilities, activate items or use the summoner spells Flash and Teleport

Shield of Durand also reduces the  movement speed of taunted units to a static 60.

Interrupts:	Interrupts all channeled and charged abilities. It will also interrupt Rakan's Grand Entrance and Battle Dance, Yasuo's Sweeping Blade and prevent Gnar's Hop from bouncing.
Reduction:	The duration is reduced by  Tenacity. The  slow is also weakened by Slow resist.
Resist:	Resisted by  crowd control immunity.  Unstoppable dashes will ignore the effect for the duration of the unstoppability, but the target will be affected afterwards if the disable duration permits. The slow is also resisted by Slow immunity.
Removal:	Removed by  Cleanses or when the Source dies.

• Champions with taunt: Shen, Rammus, Galio.

Ground

EditA unit that is grounded is unable to activate mobility spells, which include all active  dash and  blink abilities, plus a number of additional cases. The effect does not innately  knockdown a target that is already performing a dash or blink. Grounded units can still be  displaced.

Ground is the only type of  crowd control that is most commonly found in persistent area of effects, which will reapply the status effect continously.

Interrupts:	Interrupts  channeled and charged mobility spells, namely Stand United, Vault Breaker, Crowstorm, Elastic Slingshot, and Teleport, and will also prevent Hop from bouncing, but does not interrupt Recall.
Reduction:	The duration is reduced by  Tenacity.
Resist:	Resisted by  crowd control immunity.  Unstoppable units will ignore the effect for the duration of the unstoppability, but will be affected afterwards if the disable duration permits.
Removal:	Removed by  Cleanses. Olaf's Ragnarok specifically both cleanses crowd control and grants  immunity, and is thus able to even break free of Ground applied by persistent area of effects.

• Champions with ground: Cassiopeia, Galio (self), Poppy, Singed, Tahm Kench (self).

Knockdown

EditKnockdown only affects units that are  being displaced or are  performing a dash. When a unit is knocked down, it has its displacement or dash interrupted and is placed on the ground.

Knockdown is not a  status effect and does not apply  the status effect necessary for Yasuo to cast Last Breath.

Interrupts:	Interrupts all  dashes and  airborne effects (displacement and status effects).
Reduction:	The effect is instantaneous. There is nothing to reduce.
Resist:	Resisted by  crowd control immunity and  Unstoppability.
Removal:	The effect is instantaneous. There is nothing to remove.

• Champions with knockdown: Ahri, Amumu, Camille, Jinx, Lissandra, Malzahar, Poppy, Sejuani, Veigar, Viktor.

Nearsight

EditA unit that is nearsighted has their  sight radius reduced and loses their allied and other external vision (i.e. their ability to see what their allies see; wards; abilities that grant vision);  unobstructed vision). In addition, being nearsighted will prevent Shen and Galio from casting their ultimates ( Stand United and Hero's Entrance) using the portrait icons - requiring them to have personal vision of their target.  True sight does not infiltrate nearsight.

The following abilities apply nearsight:

• Quinn's Blinding Assault reduces sight radius to/by ? units.
• Nocturne's Paranoia reduces sight radius to/by ? units.
• Graves' Smoke Screen reduces the sight radius of ? type of units inside the bubble to/by ? units, but grants them vision of the entire smoke bubble.

Interrupts:	Interrupts attack commands if the nearsighted unit's target is outside of the target's new vision area and prevents  automated target acquisition.
Reduction:	The duration is not reduced by crowd control reduction ( Tenacity).
Resist:	PENDING FOR TEST: Resisted by  Crowd control immunity ( Smoke Screen cannot be resisted).
Removal:	The effect is removed by Quicksilver and Alistar's Unbreakable Will.

• Champions with nearsight: Graves, Nocturne, Quinn

Silence

EditA unit that is silenced cannot cast abilities, activate items or use the summoner spells Flash and Teleport for the duration.

Interrupts:	Interrupts all  channeled and charged abilities, as well as Glacial Storm.
Reduction:	The duration is reduced by  Tenacity.
Resist:	Resisted by  crowd control immunity.  Unstoppable units will ignore the effect for the duration of the unstoppability, but will be affected afterwards if the disable duration permits.
Removal:	Removed by  Cleanses.

• Champions with silence: Blitzcrank, Cho'Gath, Fiddlesticks, Garen, Malzahar, Soraka, Rumble (self).

Sleep

EditA unit that is asleep is unable to control its movement, declare attacks, cast abilities, activate items or use the summoner spells Flash and Teleport for the duration, as with  stun. Unlike other crowd control effects, sleep can be prematurely ended if the target takes damage. Sleep occurs after the duration of  drowsiness finishes.

Interrupts:	Falling asleep interrupts all  channeled and charged abilities, as well as Anivia's Glacial Storm.
Reduction:	The duration is reduced by  Tenacity.
Resist:	Resisted by  crowd control immunity.  Unstoppable units will ignore the effect for the duration of the unstoppability, but will be affected afterwards if the disable duration permits.
Removal:	Removed by  Cleanses and taking damage.

• Champions with sleep: Zoe.

Slow

EditA unit that is slowed has reduced  movement speed for the duration. Slow percentages under 100% cannot reduce a target below 110  movement speed, and almost all slowing abilities that scale are capped at 99% slow to keep this movement speed floor intact.

Only the slow with the highest value is taken into movement speed calculations. All additional slows are ignored until the higher-valued slow wears off.

Interrupts:	Does not interrupt any abilities.
Reduction:	The duration is reduced by  Tenacity. The strength is reduced by  slow resist, which stacks multiplicatively.
Resist:	Resisted by  crowd control immunity and  slow immunity.  Unstoppable units will ignore the effect for the duration of the unstoppability, but will be affected afterwards if the disable duration permits.
Removal:	Removed by  Cleanses, Garen's Decisive Strike, Kayn's Upgraded Shadow Step, Master Yi's Highlander and Nunu's Biggest Snowball Ever!.

• Champions with slow: Aatrox, Ahri, Akali, Anivia, Aphelios, Ashe, Aurelion Sol, Azir, Bard, Braum, Caitlyn, Camille, Cassiopeia, Cho'Gath, Corki, Darius, Diana, Draven , Dr. Mundo, Ekko, Evelynn, Fiddlesticks, Fiora, Fizz, Galio, Gangplank, Gnar, Gragas, Graves, Hecarim, Heimerdinger, Illaoi, Irelia, Ivern, Janna, Jarvan IV, Jayce, Jhin, Jinx, Kalista, Karma, Karthus, Kassadin, Kayle, Kayn, Kha'Zix, Kindred, Kled, Kog'Maw, Lee Sin, Leona, Lissandra, Lulu, Lux, Malphite, Maokai, Miss Fortune, Mordekaiser, Morgana,  Nami,  Nasus,  Nautilus, Nocturne, Nunu, Olaf, Orianna, Ornn, Poppy, Pyke, Quinn, Rakan, Rammus, Rengar, Rumble, Sejuani, Sett, Shaco, Singed, Sion, Skarner, Sona, Soraka, Swain, Sylas, Syndra, Tahm Kench, Taliyah, Talon, Teemo, Thresh, Tristana, Trundle, Tryndamere, Twisted Fate, Twitch, Urgot, Varus, Vel'Koz, Viktor, Vladimir, Volibear, Warwick, Xerath, Xin Zhao, Yorick, Yuumi, Zac, Zed, Ziggs, Zilean, Zoe, Zyra.
  • Galio and Shaco are the only ones who can reduce movement speed below 110, to 60 and 100 respectively. This movement speed is set and cannot be modified, but it can be cleansed by slow immunity.
• Items with slow: Bilgewater Cutlass, Blade of the Ruined King,  Frozen Mallet, Hextech Gunblade, Hextech GLP-800, Iceborn Gauntlet, Randuin's Omen, Righteous Glory, Rylai's Crystal Scepter, Twin Shadows, Zeke's Convergence.
• Monsters with slow: Baron Nashor, Ocean Drake.
• Summoner Spells with slow: Chilling Smite, Exhaust.
• Runes with slow: Glacial Augment.

Snare/Root

EditA unit that is rooted is unable to control its movement for the duration. Moving includes movement commands, as well as all  dash and  blink abilities - including summoner spells Flash and Teleport.

Interrupts:	Interrupts LeBlanc's Distortion, Rakan's Grand Entrance and Battle Dance, Shen's Stand United, Vi's Vault Breaker, Yasuo's Sweeping Blade Zac's Elastic Slingshot and Teleport, and will prevent Gnar's Hop from bouncing.
Reduction:	The duration is reduced by  Tenacity.
Resist:	Resisted by  crowd control immunity.  Unstoppable units will ignore the effect for the duration of the unstoppability, but will be affected afterwards if the disable duration permits.
Removal:	Removed by  Cleanses.

• Champions with root: Aphelios, Caitlyn, Ivern, Jhin, Jinx, Karma, LeBlanc, Lee Sin, Leona, Lissandra, Lux, Maokai, Morgana, Nautilus, Neeko, Nunu, Rengar, Ryze, Singed, Skarner, Soraka, Swain, Varus, Volibear, Xayah, Yuumi, Zac, Zyra.