Crowd control

Tristana under the effects of Nasus' Wither

Crowd control (commonly shortened to CC) is a blanket term used in League of Legends to describe abilities or spells that remove or diminish the control a target unit has over aspects of itself, including being able to cast spells and issue movement or attack commands. As crowd control effects impact a unit's combat ability, they are essentially more specialized forms of debuffs. However, this ability to directly hinder a unit's ability to fight means that crowd control effects are often given significantly more importance in regular gameplay than normal debuffs, resulting in their special classification.

There are various forms of crowd control, each of which is unique in how it impairs affected units and the ways it can - if at all - be resisted, mitigated, or cleansed. Some crowd control effects are exclusive to certain champions, and most champions can apply the same types of crowd control although through means different from each other.

Many specific mechanics require certain forms of crowd control to affect a unit in order to function.

Crowd control effects that inhibit casting will only disable the summoner spells Flash, Teleport, Hexflash, and Mark / Dash. Stasis and suppression are exceptions to this and will prevent the caster from using any summoner spell.

All crowd control effects, with the exception of blind or cripple, will count toward assist credit, even if the ability they were applied from did not deal damage.

Castable during Crowd Control

The following can be used even when casting is disabled by crowd control:

• Most spells and abilities with cleansing effects (there are exceptional cases)
• Annie's Summon: Tibbers recast
• Aurelion Sol's Celestial Expansion's recast
• Elise's Rappel recast
• Heimerdinger's UPGRADE!!!
• Irelia's Defiant Dance's recast
• Ivern's Daisy! recast
• Karma's Mantra
• Kennen's Lightning Rush's recast
• Shaco's Hallucinate recast
• Twisted Fate's Pick a Card's recast
• Tryndamere's Undying Rage
• Urgot's Fear Beyond Death's recast
• Varus' Blighted Quiver initial cast and recast
• Viktor's Chaos Storm's recast
• Zoe's Paddle Star's recast

Types of Crowd Control

For the complete article, see Types of Crowd Control.

• List
• Cheat sheet

The following are the current forms of crowd control that exist within League of Legends:

• Airborne: A unit that is airborne is unable to move, attack, cast abilities, or use item actives for the duration.
  • Knock aside: A knock aside causes the unit to be made airborne in a direction perpendicular to the direction of cast.
  • Knock back: A knock back causes the unit to be made airborne in a direction away from the point of cast.
  • Knock up: A knock up causes the unit to be made airborne on the spot.
  • Pull: A pull causes the unit to be made airborne in a direction towards the point of cast.
• Blind: A unit that is blinded will miss its basic attacks for the duration. Miss occurs on-hit, and does not prevent attacks from being declared.
• Cripple: A unit that is crippled has reduced attack speed for the duration.
• Disarm: A unit that is disarmed cannot declare basic attacks for the duration.
• Disrupt: A unit that is disrupted has its channeled and charged abilities interrupted.
• Drowsy: A unit that is drowsy is gradually slowed over the duration, falling asleep thereafter.
  • Sleep: A unit that is asleep is unable to move, attack, cast abilities, or use item actives for the duration as long as it doesn't get damaged.
• Forced Action: A unit that is under the effect of a forced action cannot control its own movement or attacks and is unable to cast abilities or use item actives.
  • Charm: A unit that is charmed will move toward the source with reduced movement speed for the duration.
  • Flee: A unit that is fleeing will move directly away from the source with reduced movement speed for the duration.
  • Taunt: A unit that is taunted will attempt to basic attack the source for the duration.
• Ground: A unit that is grounded is unable to activate mobility spells for the duration.
• Kinematics: A unit affected by kinematics is dragged to a unit or location.
• Knockdown: A unit that is knocked down has its dash or displacement interrupted and is placed on the ground.
• Nearsight: A unit that is nearsighted has their sight radius reduced and loses their allied vision for the duration.
• Root: A unit that is rooted is unable to control its movement or activate mobility spells for the duration.
• Silence: A unit that is silenced cannot cast abilities or use item actives for the duration.
  • Polymorph: A unit that is polymorphed is silenced and turned into a critter. The only example also applies disarm and reduces movement speed for the duration.
• Slow: A unit that is slowed has reduced movement speed for the duration.
• Stasis: A unit that is in stasis is unable to move, attack, cast abilities, or use item actives or summoner spells while being untargetable and invulnerable for the duration.
• Stun: A unit that is stunned is unable to move, attack, cast abilities, or use item actives for the duration.
  • Suspension: A unit that is suspended is stunned and pretends to be airborne.
• Suppression: A unit that is suppressed is unable to move, attack, cast abilities, or use item actives or summoner spells for the duration.

Crowd Control	Movement	Attacking	Abilities	Interrupts Channels	Disabled Summoner Spells	Modified by Tenacity	Removal
Airborne (status)	Disabled	Disabled	Disabled	Yes		No
Blind	Allowed	Parried	Allowed	No	None	Yes
Cripple	Allowed	Reduced	Allowed	No	None	Yes
Disarm	Allowed	Disabled	Allowed	No	None	Yes
Forced Action - Charm, Flee, Taunt	Uncontrollable	Disabled / Uncontrollable	Disabled	Yes		Yes	*
Ground	Partial	Allowed	Partial	See notes		Yes
Kinematics	Partial	Allowed	Allowed	No	None	No	None
Nearsight	Allowed	Partial	Partial	No	None	No
Root	Disabled	Allowed	Partial	See notes		Yes
Silence	Allowed	Allowed	Disabled	Yes		Yes
Polymorph	Allowed	Disabled	Disabled	Yes		Yes
Drowsy	Reduced	Allowed	Allowed	No	None	No
Sleep	Disabled	Disabled	Disabled	Yes		Yes
Slow	Reduced	Allowed	Allowed	No	None	Yes
Stasis	Disabled	Disabled	Disabled	Yes	All	No	None
Stun and Suspension	Disabled	Disabled	Disabled	Yes		Yes
Suppression	Disabled	Disabled	Disabled	Yes	All	No

Notes

• Movement includes basic movement and mobility abilities (i.e. dashes and blinks, e.g. Ezreal's Arcane Shift or Shen's Shadow Dash).
  • Ground does not impede basic movement, but existing sources will also apply a slow.
• Attacking refers to a champion's basic attacks (by default right-click).
• Abilities refers to a champion's castable spells (by default , , , and ).
• Removal refers to cleansing effects that can remove the crowd control debuff.
• Root and Ground will only interrupt channeled movement abilities.
• Impaired movement refers to crowd control effects that inhibit the unit's movement, which includes all immobilizing effects as well as Drowsy, Ground, and Slow.
• Immobilizing effects refer to crowd control effects that render the unit unable to control their movement, which includes Airborne, Forced Action ( Charm, Flee, Taunt), Root, Sleep, Stasis, Stun ( Suspension), and Suppression.
• Airborne, Knockdown, and Stasis are the only crowd control effects that interrupt dashes and displacements (airborne status while knocked up is not changed by stasis however).
• Crowd control applied by one's self or an ally cannot be countered in any way (neither reduced, resisted, nor removed) unless otherwise stated.
  • Self- slows (e.g. Pyke's Bone Skewer, Rammus' Defensive Ball Curl, and Galio's Shield of Durand) will be reduced by slow resist.
• Brittle is a debuff that reduces a unit's effective Tenacity by 30%. It ends prematurely when the affected unit is immobilized.
• Forced action crowd control effects end prematurely if the Source dies.
• Charm, Flee, and Taunt all individually apply the same debuff even from different ability sources.
  • Forced action effects override each other when they're applied on the same target; an ongoing forced action will end prematurely when another one is applied.
• All crowd control effects that inhibit attacking also interrupt attack windups. In terms of crowd control, basic attacks with uncancelable windups are interrupted by polymorph only.
• All crowd control effects that inhibit casting will also disable abilities that can be recast, unless otherwise stated by the ability.
• Spell shield blocks all components of an ability, including crowd control, unless the ability itself cannot be blocked.
• Anivia's Glacial Storm and Samira's Inferno Trigger are special cased to be deactivated by all forms of crowd control that interrupt all channels.
• Crowd control applications trigger a stack for Electrocute and Phase Rush.
• Taunt is the only crowd control that could theoretically break stealth (due to it being interrupted by declaring an attack).

The following mobility spells are interrupted / prevented by immobilizations, ground, polymorph and/or silence:

• Akali's Shuriken Flip
• Akshan's Heroic Swing
• Aurelion Sol's Comet of Legend
• Bard's Magical Journey
• Caitlyn's 90 Caliber Net
• Camille's Hookshot
• Kalista's Martial Poise
• Kayn's Shadow Step
• Gnar's Hop
• Quinn's Behind Enemy Lines
• Rakan's Grand Entrance and Battle Dance
• Rek'Sai's Tunnel
• Taliyah's Weaver's Wall
• Thresh's Dark Passage
• Yasuo's Sweeping Blade
• Yuumi's You and Me!
• Ziggs' Satchel Charge

The following interact with immobilizations and/or slows:

• Alistar's Triumphant Roar ( stun and airborne only)
• Dr. Mundo's Goes Where He Pleases
• Fiora's Riposte
• Janna's Eye of the Storm
• Kai'Sa's Second Skin
• Nocturne's Unspeakable Horror ( flee only)
• Rell's Ferromancy: Crash Down
• Samira's Daredevil Impulse
• Seraphine's Beat Drop (also triggers from ground)
• Swain's Ravenous Flock
• Volibear's Thundering Smash
• Yasuo's Last Breath ( airborne only)
• Rift Scuttler
• Dead Man's Plate
• Evenshroud ( Equinox)
• Fimbulwinter
• Force of Nature
• Horizon Focus
• Imperial Mandate ( Seat of Command)
• Thornmail
• Zeke's Convergence
• Aftershock
• Approach Velocity
• Cheap Shot
• First Strike
• Font of Life
• Glacial Augment
• Brittle

Categorization

To facilitate easier communications, crowd control effects are usually described under one of the following systems:

Loss of Control

Crowd control effects are grouped into one of two categories depending on whether or not the effect removes total control of the champion.

Total CC	Partial CC
Airborne	Blind
Forced Action	Cripple
Sleep	Disarm
Stasis	Drowsy
Stun	Ground
Suppression	Kinematics
Suspension	Nearsight
	Polymorph
	Root
	Silence
	Slow

Disrupting

Crowd control effects are grouped into one of two categories depending on whether or not the effect disrupts a channeled ability (such as Karthus' Requiem and Katarina's Death Lotus).

Note that Disrupt will have the same interaction as hard disruption CC towards channels, but does not have a duration and thus is not a status effect. Ground and Root only interrupt channeled movement abilities.

Disruptive crowd control effects are also referred to as cast-inhibiting crowd control, which are those that disable casting.

Disrupts	Does not disrupt
Airborne	Blind
Forced Action	Cripple
Polymorph	Drowsy
Silence	Disarm
Sleep	Ground
Stasis	Kinematics
Stun	Nearsight
Suppression	Slow
Suspension	Root

Immobilizing

Crowd control effects are grouped into one of two categories depending on whether or not the effect inhibits movement commands. Immobilizing effects prevents the ability to control movement. Non-immobilizing effects do not have an effect on the ability to control movement.

Immobilizing	Non-Immobilizing
Airborne	Blind
Forced Action	Cripple
Root	Disarm
Sleep	Drowsy
Stasis	Ground
Stun	Kinematics
Suppression	Nearsight
Suspension	Polymorph
	Silence
	Slow

Disarming

Crowd control effects are grouped into one of two categories depending on whether or not the effect disables basic attacks.

Note that Taunt only inhibits attack commands from being issued. It does not disable attacking altogether.

Disarms	Does not disarm
Airborne	Blind
Charm	Cripple
Disarm	Drowsy
Flee	Ground
Sleep	Nearsight
Stasis	Polymorph
Stun	Silence
Suppression	Slow
Suspension	Root
	Taunt

Impaired Movement and Actions

Crowd control effects are grouped into one of two categories depending on if they impair movement or impair actions. Impaired movement effects inhibit movement in some form, whereas impaired action effects inhibit acting, such as moving, attacking, or casting, to an extent.

Impairs movement	Impairs actions
Airborne	Airborne
Drowsy	Cripple
Forced Action	Disarm
Ground	Drowsy
Root	Forced Action
Sleep	Ground
Slow	Polymorph
Stasis	Silence
Stun	Sleep
Suppression	Slow
Suspension	Root
	Stasis
	Stun
	Suspension
	Suppression

Increasing the duration of Crowd Control

It is possible for a unit to have negative tenacity, this causes crowd control to last longer. The following gameplay elements reduce a unit's tenacity:

Champion abilities

A unit with Brittle.

• Brittle is a status effect that can be applied by Ornn's Bellows Breath and Call of the Forge God. It temporarily reduces the affected unit's Tenacity by 30% and ends prematurely when they become immobilized.

Items

• Anathema's Chains reduces the Nemesis' tenacity by 20% while at maximum stacks of Vendetta. This stacks multiplicatively with Brittle for a total of -56% tenacity.

Monsters

• Rift Scuttler has -100% tenacity, doubling the duration of crowd control effects applied to her. This stacks additively with Brittle for a total of -130% tenacity.

Countering Crowd Control

Ragnarok causes Olaf to become immune to the knock up from Alistar's Pulverize.

Crowd control can be countered in various different ways.

Immunity

Crowd control immunity completely negates any attempt at application of CC on the unit. Becoming immune does not prevent already-applied crowd control from imposing their effects, unless they were explicitly removed.

A unit with the immunity status will indicate that they "Can't Be Disabled!" or are "Spell Immune!" when they resist a crowd control effect, or specifically "Can't Be Slowed!" upon negating a slow or cripple effect with slow immunity. This indicator this may not appear for some immunities.

Total Immunity

All crowd control debuffs currently in League of Legends can be prevented with total CC immunity:

• Fiora's Riposte provides immunity to all forms of CC applied (except nearsight) during the parry. Does not resist self/allied crowd control.
• Galio's Hero's Entrance provides immunity to all forms of CC applied during the last 1.5 seconds of the channel. Does not resist self/allied crowd control.
• Karthus' Death Defied provides immunity to all forms of CC applied while in the zombie state.
• Kled's Dismount provides immunity to all forms of CC applied during the dismount and Chaaaaaaaarge!!! provides immunity to all forms of CC applied during the charge and the dash.
• Kog'Maw's Icathian Surprise provides immunity to all forms of CC applied while in the zombie state.
• Malzahar's Void Shift provides immunity to all forms of CC applied while active and for a brief period after it's triggered. Does not resist self/allied crowd control.

Bard's Tempered Fate putting Baron Nashor into stasis regardless of its immunity to crowd control.

• Morgana's Black Shield provides immunity to all forms of CC applied (except nearsight) while the shield persists. Does not resist self/allied crowd control.
• Olaf's Ragnarok cleanses and provides immunity to all forms of CC applied in the duration.
• Pantheon's Grand Starfall (second channel) provides immunity to all forms of CC applied in the channel.
• Rammus' Soaring Slam provides immunity to all forms of CC applied during the dash.
• Sion's Unstoppable Onslaught provides immunity to all forms of CC applied in the duration. Does not resist self/allied crowd control.
• Warwick's Infinite Duress provides immunity to all forms of CC applied during the dash.
• Volibear's Stormbringer provides immunity to all forms of CC applied during the dash and for a moment upon impact.
• Heimerdinger's H-28Q Apex Turret is immune to all forms of CC.
• Zac's Bloblets are immune to all forms of CC.
• All epic monsters (e.g. Baron Nashor, Rift Herald, Dragon) are immune to all forms of CC with the exception of stasis.
  • The Rift Herald loses her immunity in summoned form (when spawned by the Eye of the Herald).
• Turrets ignore any potential forms of CC applied that may affect them with the exception of stasis.

Displacement Immunity

Unstoppable Force causes Malphite to be unaffected by the knockdown from Veigar's Event Horizon.

Displacement immunity provides immunity to displacements, (including suspension, knockdown, Devour, Realm of Death, and The Show Stopper), kinematics, sleep and stasis.

• Camille's The Hextech Ultimatum
• Corki's Special Delivery
• Hecarim's Onslaught of Shadows
• Illaoi's Leap of Faith
• Jarvan IV's Cataclysm
• Kalista's Fate's Call (the emerging dash)
• Malphite's Unstoppable Force
• Nocturne's Paranoia (recast)
• Ornn's Bellows Breath
• Rek'Sai's Void Rush
• Sett's The Show Stopper
• Shyvana's Dragon's Descent
• Tahm Kench's Devour
• Vex's Shadow Surge (recast)
• Vi's Cease and Desist
• Viego's Heartbreaker
• Warwick's Jaws of the Beast
  • The channel may still be interrupted, removing the immunity.
• Yone's Soul Unbound (recast)
• Rift Herald's wind up and leap attack
• Catapult

UnstoppableForceMarker

EditUnstoppableForceMarker is a marker buff which is preloaded for all displacement immunities as well as the immunities for Chaaaaaaaarge!!!, Infinite Duress, Soaring Slam, Stormbringer, and Unstoppable Onslaught.

Devour, Fate's Call, Realm Warp, and Tempered Fate all interact with UnstoppableForceMarker.

Notes

• Ekko's Chronobreak provides immunity only to airborne displacements.
• Urgot's Fear Beyond Death's recast reel-in will be deferred to until the unit is no longer displacement immune.
• Aftershock will not trigger against displacement immune units.
• Some abilities that apply airborne and stun simultaneously will not apply their stun against displacement immune units. These include:
  • Alistar's Pulverize
  • Aurelion Sol's Voice of Light
  • Ivern's Daisy!
  • Maokai's Bramble Smash
  • Ornn's Searing Charge and Call of the Forge God
  • Rammus' Powerball
  • Sion's Decimating Smash and Unstoppable Onslaught
  • Tristana's Buster Shot
  • Vel'Koz's Tectonic Disruption
  • Xin Zhao's Crescent Guard
  • Zac's Stretching Strikes and Elastic Slingshot
• Skarner's Impale is the only ability that will ignore the effects of displacement immunity and drag its target regardless, interrupting their otherwise "unstoppable" action in the process. Click "Expand" for more details.

Impale applies a small displacement to the target every 0.25 seconds whenever they are not close to Skarner. These displacements do not apply airborne and are not flagged as displacements, meaning that targets who are not immune to the suppression are also never immune to the displacement either. As a consequence, displacement immunity fails to ignore this movement. See the table below regarding Impale's interaction with abilities that grant displacement immunity.

Special interactions
The following dashes are interrupted and do not apply their 'on dash completion' effects (if they have one) when successfully impaled: Corki's The Package Nocturne's Paranoia's recast Sett's The Show Stopper This ability attaches its target to Sett. Dragging him out will detach that unit from him. Shyvana's Dragon's Descent Yone's Soul Unbound (recast) Yone's very high dash speed makes it almost impossible to catch him during the dash. Skarner is required to be close enough to Yone and needs to have near-perfect timing with Impale's cast in order to successfully cancel the dash. If cast too early, the recast will be deferred to the end of Impale's duration, or if cast too late, Impale will be canceled as Yone is already too far away.
The following dashes are stopped likewise with the ones mentioned above, however, they do apply 'on dash completion' effects and when their dash is interrupted, the ability's effects are centered around their initial stopping point from Impale. Hecarim's Onslaught of Shadows Jarvan IV's Cataclysm The terrain that would usually be formed on impact is instead delayed until the forced movement of Impale ends. The displacement immunity is not removed. Malphite's Unstoppable Force
The following abilities do not have any special interactions with Impale other than being displaced during their cast. Illaoi's Leap of Faith Ornn's Bellows Breath The cast direction for this ability cannot be changed. Viego's Heartbreaker
Rek'Sai's Void Rush has two different outcomes: Impale is cast before the burrow into the ground: Rek'Sai will not vanish while she's being dragged and her ultimate goes on a 10-second  cooldown after a brief delay. The displacement immunity is not removed in this case however, which ends when the ability cancels. Impale is cast after the emergence: Rek'Sai's dash is interrupted.
Vi's Cease and Desist behaves differently in contrast to the previously noted examples due to its uniqueness. The dash is not interrupted and the displacement immunity is not removed. Vi will continue to march towards the target while simultaneously being displaced by Impale and dragged to Skarner. Once Impale ends, she is free of the displacement and will perform the ability as normal. Enemies that come into range of her are still affected by entering her path. The primary target is dealt the ability's final effects if they move into the respective range of Vi, thus performing the ability successfully in spite of Impale.
Camille's The Hextech Ultimatum is impractical to test, as it renders her untargetable instantly the moment it's activated, which will always cancel Impale's cast, regardless of the timing.
Kalista's Fate's Call and Tahm Kench's Devour are not possible to test due to the target being vanished, rendering them unable to be selected for unit-targeted abilities like Impale.

It is important to note that total immunity and displacement immunity are not distinguished by the in-game user interface to display statuses relating to crowd control above the health bar. Both read "Unstoppable" which merely only indicates the unit is immune to crowd control in some form. It should not be confused as being the same effect.

Shyvana is displacement immune during Dragon's Descent's dash, though not explicitly indicated.

Warwick is immune to all crowd control during Infinite Duress, though not explicitly indicated.

Immobilize Immunity

Immobilize immunity is a status effect that prevents the application of immobilizing effects.
The following prevent the application of immobilizes:

• Dr. Mundo's Goes Where He Pleases

Slow Immunity

Highlander causes Master Yi to become immune to the slow from Kog'Maw's Void Ooze.

Main: Slow_resist#Slow_Immunity

EditSlow immunity is a status effect that prevents the application of slows.

The following prevent the application of slows:

• Master Yi's Highlander
• Sejuani's Fury of the North
• Nunu's Biggest Snowball Ever!
• Total crowd control immunity

Cripple Immunity

Fury of the North causes Sejuani to become immune to the cripple from Malphite's Ground Slam.

Main: Slow_resist#Cripple_Immunity

EditCripple immunity is a status effect that prevents the application of cripples, also known as  attack speed slows.

The following prevent the application of cripples:

• Master Yi's Highlander
• Sejuani's Fury of the North
• Total crowd control immunity

Spell Shields

Main article: Spell shield

Banshee's Veil preventing Orianna from being affected by Blitzcrank's Rocket Grab.

While not specific to crowd control, spell shields can be considered to provide pseudo-CC immunity against a single spell, but this is not guaranteed - abilities that do not interact with spell shields (such as Karthus' Wall of Pain) will still apply any attached crowd control effects if possible. Multiple active spell shields existing on the same unit will break simultaneously against a single hostile ability that does not apply a crowd control effect.

• Nocturne's Shroud of Darkness provides immunity to CC applied with the first instance of a hostile ability blocked in the duration.
• Sivir's Spell Shield provides immunity to CC applied with the first instance of a hostile ability blocked in the duration.
• Banshee's Veil provides immunity to CC applied with the first instance of a hostile ability blocked while the passive is ready.
• Edge of Night provides immunity to CC applied with the first instance of a hostile ability blocked while the passive is ready.

Removal

Karma activating Mikael's Blessing on herself to remove a crowd control debuff.

Most types of crowd control (CC) can be removed after they have been applied, with the cleansing ability or item remaining "castable" while affected by the CC it removes even if that CC normally precludes ability, spell, or item usage. Kalista's Fate's Call, Yone's Soul Unbound recast, and Mikael's Blessing are exceptions to this "castable" rule. Suppression will disable all summoner spells, including Cleanse.

Stasis effects cannot be removed through any means (excluding death) and will also disable cleansing effects for their duration. Kinematics cannot be removed by cleansing effects. The capability to cleanse persistent crowd control is case by case and usually depends on the source of application. The disable portion of airborne effects can be removed by cleanse effects, but their move block cannot, unless it's being overridden by another move block (i.e. another displacing effect, dash or blink).

• Alistar's Unbreakable Will removes all forms of CC.
• Gangplank's Remove Scurvy removes all forms of CC.
• Kalista's Fate's Call removes all forms of CC.
• Kled's Dismount removes all forms of CC.
• Olaf's Ragnarok removes all forms of CC.
• Rengar's Empowered Battle Roar removes all forms of CC.
• Syndra's Force of Will removes all forms of CC on the target.
• Mordekaiser's Realm of Death removes all forced action effects sourced by units other than the two entering the realm.
• Yone's Soul Unbound (recast) removes all forms of CC aside from disarm, ground, nearsight, silence, and slow.
• Master Yi's Highlander removes all slows and cripples.
• Garen's Decisive Strike removes all slows.
• Nunu's Biggest Snowball Ever! removes all slows.
• Cleanse removes all forms of CC aside from airborne, nearsight, and suppression.
• Mikael's Blessing's active effect removes all forms of CC aside from airborne, blind, disarm, ground, nearsight, and suppression.
• Quicksilver removes all forms of CC aside from airborne.

Reduction

Main article: Tenacity

Tenacity reduces the duration of crowd control effects by a percentage equal to its value. Sources of tenacity will stack multiplicatively or additively with each other, depending on the source of the tenacity.

Airborne, drowsy, kinematics, nearsight, stasis, and suppression are not affected by tenacity and will always apply for their full duration.

Potency Reduction

Main article: Slow resist

This unofficial stat is unique to slows; slow resist reduces the effectiveness, or percentage, of slowing effects. Although it does not affect flat reductions in  movement speed.

Self/Ally-CC

The following effects are comparable to crowd control, except that the effect is caused voluntarily and affects the user/an ally rather than an enemy.

Self-Slow: The following abilities slow the caster:

• Blitzcrank's Overdrive
• Galio's Shield of Durand
• Nunu & Willump's Biggest Snowball Ever! (only in the first second)
• Ornn's Bellows Breath
• Pantheon's Comet Spear and Aegis Assault
• Poppy's Keeper's Verdict
• Pyke's Bone Skewer
• Quinn's Behind Enemy Lines (when taking damage from non-minions)
• Rammus' Defensive Ball Curl
• Samira's Inferno Trigger
• Tahm Kench's Devour
• Thresh's Death Sentence (when hitting a target)
• Urgot's Purge (when attacking a target)
• Varus' Piercing Arrow
• Vi's Vault Breaker
• Viego's Spectral Maw
• Xerath's Arcanopulse

Self-Stun: The following abilities stun the caster.

• Sion's Unstoppable Onslaught (when colliding with terrain)
• Taliyah's Weaver's Wall (when colliding with Wind Wall or Blade Whirl)

Self-Ground: The following abilities ground the caster.

• Tahm Kench's Devour

Ally-Silence: The following abilities silence an ally.

• Kalista's Fate's Call

Cast Times and Channels

The casting time of an ability cannot be canceled by any means except death and prevents the caster from performing any other actions until the cast time is complete, unless otherwise stated. Certain summoner spells and item actives can be used during almost all cast times.

The channeling time of an ability, by contrast to a casting time, can be cancelled by disruptive CC. Channels can prevent their caster from performing certain actions and/or being able to cancel them, which is case by case. See Channel Interactions for more details.

Trivia

		"Time doesn't heal all wounds." This article is outdated. Please update this article to reflect recent events or newly available information. This section needs to be checked and proofread. This article was last edited by Frontier64 on 08-Dec-2021 00:17.

• Sona's Crescendo causes affected champions to also play a sped-up version of its dance animation.
• If abilities that share cooldowns or are unique to different forms are counted separately, then Gnar possesses the highest number of crowd control abilities in the game, at six, with Nautilus and Karma tying for second place, at four. Otherwise, if they are counted as shared, Nautilus and Gnar possess the most, at four.
• Nautilus, Poppy and Urgot possess the highest number of unique crowd control types, at five.
  • Maokai, Xin Zhao, Ornn, and Zac possess the second-highest, at four. If Lissandra's Frozen Tomb is counted as a form of stasis, she also has four.
    • Aurelion Sol, Alistar, Bard, Blitzcrank, Braum, Camille, Cho'Gath, Gnar, Gragas, Ivern, Janna, Kled, Lee Sin, Leona, Lissandra (otherwise), Lulu, Morgana, Nami, Rammus, Tahm Kench, Thresh, Sejuani, Sion, Skarner, Syndra, Vel'Koz and Zyra each have three.
• Alistar, Aurelion Sol, Gangplank, Heimerdinger, Irelia, Karma, Kennen, Olaf, Rengar, Twisted Fate, Tryndamere, Urgot, Viktor and Zoe are the only champions in the game that can activate an ability while disabled.
  • Of these, Alistar, Gangplank, Olaf and Rengar can also remove the disabling effects.
• Ezreal, Katarina, Lucian, Master Yi, Sivir, Nidalee, Kai'Sa, and Akshan are the only champions in game without any sort of crowd control inherent to their kit.
• Malphite is the only tank in the game that lacks hard crowd control on his basic abilities.
• Most Marksman and Slayers lack hard crowd control. This is to balance their high damage dealing kits. The few champions in those classes that have hard CC, tend to have one that is a skillshot, has a long cooldown, and/or is tied to their ultimates.
  • In contrast, almost every support and tank have hard crowd control. This allows them to still be relevant late game, despite their damage falling off. They use their hard CC to setup advantages for their damage focused allies.
• Each type of crowd control effect applied by the following abilities have the longest base durations (persistent ones do not count):
  • Airborne - Kalista's Fate's Call (2 seconds)
  • Blind - Teemo's Blinding Dart (3 seconds)
  • Cripple - Nasus' Wither (5 seconds)
  • Disarm - Lulu's Whimsy (2.25 seconds)
  • Drowsy - Lillia's Lilting Lullaby (1.5 seconds)
  • Charm - Ahri's Charm and Evelynn's Allure (tied at 2 seconds)
  • Flee - Nocturne's Unspeakable Horror (2.25 seconds)
    • Against non-champions, Aatrox's World Ender and Darius' Noxian Guillotine (tied at 3 seconds)
  • Taunt - Rammus' Frenzying Taunt (2 seconds)
  • Ground - Poppy's Steadfast Presence (2 seconds)
  • Nearsight - Nocturne's Paranoia (6 seconds)
  • Silence - Cho'Gath's Feral Scream and Malzahar's Call of the Void (tied at 2 seconds)
    • On allies, Kalista's Fate's Call (4 seconds)
    • Polymorph - Lulu's Whimsy (2.25 seconds)
  • Sleep - Lillia's Lilting Lullaby (2.5 seconds)
  • Slow - Nasus' Wither (5 seconds)
  • Root - Karma's Renewal (3.25 seconds)
  • Stasis - Syndra's Force of Will (5 seconds)
  • Stun - Ashe's Enchanted Crystal Arrow (3.5 seconds)
    • On allies, Teleport (4 seconds)