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Types of Crowd Control

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Here is a summary of the types of Crowd Control.
Crowd Control Movement Attacking Abilities Interrupt Spells Reduction Removal
Airborne Blocked Blocked Blocked Yes FlashTeleport No
Blind Allowed Miss Allowed No Allowed Yes CleanseQuicksilver Sash
Entangle Blocked Blocked Allowed See notes FlashTeleport Yes CleanseQuicksilver SashMikael's Crucible
Forced Action Blocked Blocked Blocked Yes FlashTeleport Yes CleanseQuicksilver SashMikael's Crucible
Polymorph Reduced Blocked Blocked Yes FlashTeleport Yes CleanseQuicksilver SashMikael's Crucible
Root Blocked Allowed Allowed See notes FlashTeleport Yes CleanseQuicksilver SashMikael's Crucible
Silence Allowed Allowed Blocked Yes Blocked Yes CleanseQuicksilver SashMikael's Crucible
Slow Reduced Allowed Allowed No Allowed Yes CleanseQuicksilver SashMikael's Crucible
Stun Blocked Blocked Blocked Yes FlashTeleport Yes CleanseQuicksilver SashMikael's Crucible
Suspension Blocked Blocked Blocked Yes FlashTeleport Yes CleanseQuicksilver SashMikael's Crucible
Suppression Blocked Blocked Blocked Yes Blocked No Quicksilver Sash

Please note the following:

Types of Crowd Control

Airborne

  • Airborne crowd control 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 the disabling to attacking and casting). In the game, the most recent move block will over-rule any previous move blocks.
  • Move block
    • The target is unable to control movement.
      • The target remains targetable and will be affected by abilities as if they were on the ground (such as Miasma.png Miasma).
      • The duration of the effect is related to how long the target is in the air. A common bug where a target who is dashing is made airborne causes them to be knocked "into orbit". The duration is largely extended due to the increased distance the target has to fall.
    • Interrupts active move blocks, namely other airborne effects and dashes.
    • Can be interrupted by subsequent move blocks, namely other airborne effects, dashes or blinks.
    • The duration is unaffected by crowd control reduction.
    • The effect cannot be removed by cleanse effects.
  • Stun
    • The target is unable to cast abilities or basic attack.
    • The duration is affected by crowd control reduction and can be removed by cleansing effects.
    • Explained in more detail below.
  • Through the use of cleansing effects or tenacity, players can remove the stun and subsequently activate abilities such as Flash.png Flash or champion-specific dashes to break the airborne's move block.
  • In some instances, the stun duration is longer than the move block (e.g. SionSquare.png Sion's Unstoppable Onslaught.png 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. AzirSquare.png Azir's Emperor's Divide.png Emperor's Divide did not apply any stun at all in the initial charge on the ability, which allowed his enemies to use Flash/dash to supersede the charge's knockback and get over the wall).

Knockback

Knock Aside

  • The target is made airborne in a direction perpendicular from the source.
  • Champions with Knock Aside: DravenSquare.png Draven, ViSquare.png Vi

Knockup

Pull

Blind

  • The target will miss auto-attacks, incurring the message "Miss" above their attack target.
    • Blind only mitigates the physical damage portion of an attack, including physical damage sourced from a physical on-hit effect. Other damage types and effects won't miss. See: On-hit effects.
    • Abilities that apply on-hit effects will also miss.
    • Blind is considered a form of damage mitigation. As such, it is applied after Thornmail item.png Thornmail's passive.
  • Does not interrupt channeling.
  • The duration is affected by crowd control reduction.
  • The effect can be removed by all cleansing effects (except for Mikael's Crucible).
  • Blind will not affect certain champion abilities.(e.g. Riven's passive Runic Blade)
  • Blinded enemies will only miss if they attack while blinded. Ranged units will still hit if the projectile fires before the blind.
  • If VayneSquare.png Vayne is blinded, she can only proc her Silver Bolts.png Silver Bolts if she tumbles. Normal auto attacks do not proc silver bolts while blinded (tested)
  • Champions with Blind: TeemoSquare.png Teemo , QuinnSquare.png Quinn

Entangle

  • The target is unable to control movement or attack.
    • This includes abilities and summoner spells that move the champion.
    • This will not prevent delayed teleports that have already begun channeling, such as TwistedFateSquare.png Twisted Fate's Gate.png Gate. The target will arrive rooted, if the duration permits.
  • Does not interrupt the channeling of abilities.
  • The duration is affected by crowd control reduction.
  • The effect can be removed by all cleansing effects.
  • Champions with Entangle: AmumuSquare.png Amumu

Forced Action

  • The target is unable to control movement, attack or cast abilities.
  • Interrupts the channeling of abilities.
  • The duration is affected by crowd control reduction.
  • The effect can be removed by all cleansing effects.

Charm

  • The target will attempt to move toward the source for the duration.
  • If the target does not have vision of the source, they will instead stand still.
  • If the source dies, the effect ends.
  • Champions with Charm: AhriSquare.png Ahri

Fear

  • The target will walk in random directions with reduced movement speed for the duration.
  • Champions with Fear: VolibearSquare.png Volibear (non-champion enemies only)

Flee

  • The target will be locked in place for a brief duration and then run directly away from the source with reduced movement speed for the duration.
  • Champions with Flee: FiddlesticksSquare.png Fiddlesticks, HecarimSquare.png Hecarim, NocturneSquare.png Nocturne, ShacoSquare.png Shaco

Taunt

  • The target will attempt to attack the source of the taunt for the duration.
  • If the target does not have vision of the source, they will simply stand in place.
  • If the target cannot attack the source (such as Zhonya's Hourglass item.png Zhonya's Hourglass), the target will simply stand in place.
  • If the source dies, the effect ends.
  • Champions with Taunt: ShenSquare.png Shen, RammusSquare.png Rammus, GalioSquare.png Galio

Polymorph

  • ​The target is unable to attack or cast abilities and is slowed for the duration.
    • This is distinct from Blind as the target cannot attack at all: as such, on-hit effects are never used/wasted.
    • Whimsy.png Whimsy, when cast on an enemy, transforms the target into a small critter (reducing their size).
  • Interrupts the channeling of abilities.
  • The duration is affected by crowd control reduction.
  • The effect can be removed by all cleansing effects.
  • Champions with Polymorph: LuluSquare.png Lulu

Root

Silence

  • The target is unable to cast abilities or the summoner spells Flash.png Flash and Teleport.png Teleport. All other summoner spells are still usable.
  • Interrupts the channeling of abilities.
  • The duration is affected by crowd control reduction.
  • The effect can be removed by all cleansing effects.
  • Champions with silence: BlitzcrankSquare.png Blitzcrank, ChoGathSquare.png Cho'Gath, FiddlesticksSquare.png Fiddlesticks, GarenSquare.png Garen, MalzaharSquare.png Malzahar, SorakaSquare.png Soraka

Slow

Stun

Suspension

  • The target is unable to control movement, attack or cast abilities.
    • The target remains targetable and will be affected by abilities as if they were on the ground (such as Miasma.png Miasma).
  • Interrupts the channeling of abilities.
  • Interrupts dash abilities.
  • Unlike a knockup, which is visually similar:
    • The duration is affected by crowd control reduction.
    • The effect can be removed by all cleansing effects.
  • The target is considered to be "airborne" for the purposes of Last Breath.png Last Breath.
  • Champions with Suspension: NamiSquare.png Nami, Vel'KozSquare.png Vel'Koz, YasuoSquare.png Yasuo

Suppression

  • The target is unable to control movement, attack, cast abilities or summoner spells (including cleanse).
  • Will interrupt channeled abilities.
  • The duration is not affected by crowd control reduction.
  • The effect can be removed only by using Quicksilver Sash item.png Quicksilver Sash or Mercurial Scimitar item.png Mercurial Scimitar (Cleanse.png Cleanse is not an option since Suppression prevents summoner spell use).
  • Champions with Suppression: MalzaharSquare.png Malzahar, SkarnerSquare.png Skarner, UrgotSquare.png Urgot, WarwickSquare.png Warwick

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