Crowd control/Action modifier

Action modifiers (more commonly known as disables or crowd control) prevent or reduce the effectiveness of actions the afflicted unit can take.

Types of action modifiers

 * Blind
 * Makes the target always miss with auto attacks.
 * Has no effects on abilities and will not interrupt them or prevent their damage.
 * Charm
 * Forces the target to walk towards the champion who applied this crowd control.
 * Prevents controlled movements, auto attacks, and the use of abilities.
 * Will interrupt channeled abilities.
 * Will slow the target.
 * Fear
 * Forces the target to run around randomly around its location.
 * Prevents controlled movement, auto attacks, and the use of abilities.
 * Will interrupt channeled abilities.
 * Will slow the target.
 * Knockup
 * Knocks the target into the air but does not change their location.
 * Prevents movement, auto attacks, and the use of abilities while in the air.
 * Will interrupt channeled abilities.
 * Cannot be removed by or reduced by Tenacity.
 * Polymorph
 * Prevents the use of most abilities.
 * Prevents auto attacks.
 * Silence
 * Prevents use of most spells and abilities.
 * Does not stop auto attacks.
 * Will interrupt channeled abilities.
 * Stun
 * Immobilizes and prevents actions.
 * Will interrupt channeled abilities.
 * Blocks use of most abilities.
 * Suppression
 * Immobilizes and prevents actions.
 * Will interrupt channeled abilities.
 * Prevents use of most abilities.
 * Cannot be removed by or reduced by Tenacity.
 * Taunt
 * Forces the target to try to auto attack the taunting champion, making him unable to do anything else.
 * Will interrupt channeled abilities.
 * Can force movement because target will chase to try to autoattack while taunted.

Action removal modifiers
These modifiers will take away a champion's ability to perform certain actions, such as: hit with auto attacks, move, use abilities/items, or combinations of these. {| border="1" cellpadding="2" cellspacing="0" style="text-align: left; padding-top: 2px; padding-right: 2px; padding-bottom: 2px; padding-left: 2px; background-color: rgb(7, 15, 41); color: white; border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid; border-top-color: rgb(42, 40, 140); border-right-color: rgb(42, 40, 140); border-bottom-color: rgb(42, 40, 140); border-left-color: rgb(42, 40, 140); border-collapse: collapse; font-size: 0.9em; width: 100%; " ! colspan="5" style="font-size:120%; padding:0.5em; background-color:#0E1451; color:#AAF; border:1px solid #070F29"|

Blinds, knockups, silences, stuns and suppressions
! Source ! Name ! Description ! Duration ! colspan="2"| Notes
 * colspan="5"|Summoner Spells
 * Reduce  damage and movement by 30% and attackspeed by 50%.
 * 3 seconds
 * colspan="2"|Also slows
 * colspan="5"|Champion Abilities
 * Knockup and Stun
 * 1 + 0.5 seconds
 * Stun
 * 1 second
 * Stun
 * 1 second
 * Upon detonation
 * Stun
 * 1.75 seconds
 * Applied on damaging spell cast
 * Stun
 * 3 seconds
 * Applies only to the target hit directly
 * rowspan="3" |
 * Stun
 * ~0.5 sec
 * Pulls target towards Blitzcrank
 * Knockup
 * 2 seconds
 * Silence
 * 0.5 seconds
 * Stun
 * 2 seconds
 * On targets set ablaze
 * Stun
 * 2 seconds
 * Enemies with their backs turned to Cassiopeia are slowed instead
 * rowspan="2"|
 * Knockup
 * 1 second
 * Also applies a slow
 * Silence
 * (1.5/1.75/2/2.25/2.5) seconds
 * Knockup
 * 1
 * Silence
 * 1.2 seconds
 * Each bounce refreshes the silence
 * Silence
 * 2.5s
 * rowspan="2"|
 * rowspan="2"|
 * Blind
 * (1/1.5/2/2.5/3) seconds
 * Stun
 * 1.5 seconds
 * Only affects targets directly hit
 * Stun
 * (1/1.25/1.5/1.75/2) seconds
 * Only targets with higher %HP
 * Knockup
 * 0.8 seconds
 * Knockup
 * Only on contact with flag
 * Stun
 * 1 second
 * Silence
 * (1/1.4/1.8/2.2/2.6) seconds
 * Stun
 * 1 second
 * On receiving third mark
 * 2 seconds
 * Enemies with their backs turned to Cassiopeia are slowed instead
 * rowspan="2"|
 * Knockup
 * 1 second
 * Also applies a slow
 * Silence
 * (1.5/1.75/2/2.25/2.5) seconds
 * Knockup
 * 1
 * Silence
 * 1.2 seconds
 * Each bounce refreshes the silence
 * Silence
 * 2.5s
 * rowspan="2"|
 * rowspan="2"|
 * Blind
 * (1/1.5/2/2.5/3) seconds
 * Stun
 * 1.5 seconds
 * Only affects targets directly hit
 * Stun
 * (1/1.25/1.5/1.75/2) seconds
 * Only targets with higher %HP
 * Knockup
 * 0.8 seconds
 * Knockup
 * Only on contact with flag
 * Stun
 * 1 second
 * Silence
 * (1/1.4/1.8/2.2/2.6) seconds
 * Stun
 * 1 second
 * On receiving third mark
 * Stun
 * 1.5 seconds
 * Only affects targets directly hit
 * Stun
 * (1/1.25/1.5/1.75/2) seconds
 * Only targets with higher %HP
 * Knockup
 * 0.8 seconds
 * Knockup
 * Only on contact with flag
 * Stun
 * 1 second
 * Silence
 * (1/1.4/1.8/2.2/2.6) seconds
 * Stun
 * 1 second
 * On receiving third mark
 * Knockup
 * Only on contact with flag
 * Stun
 * 1 second
 * Silence
 * (1/1.4/1.8/2.2/2.6) seconds
 * Stun
 * 1 second
 * On receiving third mark
 * Stun
 * 1 second
 * Silence
 * (1/1.4/1.8/2.2/2.6) seconds
 * Stun
 * 1 second
 * On receiving third mark
 * Stun
 * 1 second
 * On receiving third mark
 * Stun
 * 1 second
 * On receiving third mark
 * On receiving third mark


 * Silence
 * 2 seconds
 * When activated by another ability
 * rowspan="2"|
 * Stun
 * 1.25 seconds
 * Stun
 * 1.5 seconds
 * Only in the center of the AoE
 * Knockup
 * 1.5 seconds
 * Polymorph
 * (1.5 / 1.75 / 2 / 2.25 / 2.5) seconds
 * rowspan="2" |
 * Silence
 * (1.4/1.8/2.2/2.6/3) seconds
 * Suppression
 * 2.5 seconds
 * Suppression breaks when Malzahar stops channeling
 * Stun
 * (1/1.5/2) seconds
 * Only if tethered targets, 3 sec after initial activation
 * rowspan="2"|
 * Stun
 * 1.25 seconds
 * Knockup
 * Also slows all enemies hit.
 * Stun
 * (1/1.5/2) seconds
 * Also knocks up target and all enemies it passes through
 * Stun
 * 1 second
 * Stun
 * 1.5 seconds
 * If pushed into terrain
 * Stun
 * 0.75 seconds
 * 1.5 seconds with ≥50 Fury
 * Stun
 * 0.75 seconds
 * Stun
 * 2 seconds (on first champion hit)
 * Stun duration is halved in an area around the first champion is strikes. Applies
 * Stun
 * 1.5 seconds
 * Suppression
 * 1.75 seconds
 * Skarner may also drag the target during the suppression
 * Stun
 * 1.5 seconds
 * Silence
 * (1/1.5/2/2.5/3) seconds
 * Stun
 * 1.5 seconds
 * Only if the enemy gets hit by a knocked back Dark Sphere
 * Stun
 * 1.5 seconds
 * Blind
 * (1.5/1.75/2/2.25/2.5) seconds
 * Stun
 * (1/1.25/1.5/1.75/2) seconds
 * Gold Card
 * Stun
 * 1 second
 * Applied on hit; 6s cooldown per target
 * Suppression
 * 1 second
 * Switches the position of the target and Urgot.
 * Stun
 * 1.5 seconds
 * If pushed into terrain
 * Stun
 * (1.5/1.75/2/2.25/2.5) seconds
 * Upon first touching the perimeter. Only applies once per cast.
 * r
 * Knockup
 * 1.25 seconds
 * Knocks up all enemies Vi comes in contact with during her dash
 * rowspan="2"|
 * Stun
 * 1.5 seconds
 * Upon reaching 3 slow stacks
 * Silence
 * 0.5 seconds
 * Applies only when cast
 * Suppression
 * 1.7 seconds
 * Suppression is broken when Warwick stops channeling
 * Knockup
 * Knocks up any one target only once per cast
 * Stun
 * 1.5 seconds
 * When detonated by another spell
 * Knockup
 * Applied on third hit
 * Knockup
 * }
 * Suppression
 * 1.75 seconds
 * Skarner may also drag the target during the suppression
 * Stun
 * 1.5 seconds
 * Silence
 * (1/1.5/2/2.5/3) seconds
 * Stun
 * 1.5 seconds
 * Only if the enemy gets hit by a knocked back Dark Sphere
 * Stun
 * 1.5 seconds
 * Blind
 * (1.5/1.75/2/2.25/2.5) seconds
 * Stun
 * (1/1.25/1.5/1.75/2) seconds
 * Gold Card
 * Stun
 * 1 second
 * Applied on hit; 6s cooldown per target
 * Suppression
 * 1 second
 * Switches the position of the target and Urgot.
 * Stun
 * 1.5 seconds
 * If pushed into terrain
 * Stun
 * (1.5/1.75/2/2.25/2.5) seconds
 * Upon first touching the perimeter. Only applies once per cast.
 * r
 * Knockup
 * 1.25 seconds
 * Knocks up all enemies Vi comes in contact with during her dash
 * rowspan="2"|
 * Stun
 * 1.5 seconds
 * Upon reaching 3 slow stacks
 * Silence
 * 0.5 seconds
 * Applies only when cast
 * Suppression
 * 1.7 seconds
 * Suppression is broken when Warwick stops channeling
 * Knockup
 * Knocks up any one target only once per cast
 * Stun
 * 1.5 seconds
 * When detonated by another spell
 * Knockup
 * Applied on third hit
 * Knockup
 * }
 * Switches the position of the target and Urgot.
 * Stun
 * 1.5 seconds
 * If pushed into terrain
 * Stun
 * (1.5/1.75/2/2.25/2.5) seconds
 * Upon first touching the perimeter. Only applies once per cast.
 * r
 * Knockup
 * 1.25 seconds
 * Knocks up all enemies Vi comes in contact with during her dash
 * rowspan="2"|
 * Stun
 * 1.5 seconds
 * Upon reaching 3 slow stacks
 * Silence
 * 0.5 seconds
 * Applies only when cast
 * Suppression
 * 1.7 seconds
 * Suppression is broken when Warwick stops channeling
 * Knockup
 * Knocks up any one target only once per cast
 * Stun
 * 1.5 seconds
 * When detonated by another spell
 * Knockup
 * Applied on third hit
 * Knockup
 * }
 * Suppression
 * 1.7 seconds
 * Suppression is broken when Warwick stops channeling
 * Knockup
 * Knocks up any one target only once per cast
 * Stun
 * 1.5 seconds
 * When detonated by another spell
 * Knockup
 * Applied on third hit
 * Knockup
 * }
 * Stun
 * 1.5 seconds
 * When detonated by another spell
 * Knockup
 * Applied on third hit
 * Knockup
 * }
 * Knockup
 * Applied on third hit
 * Knockup
 * }
 * Applied on third hit
 * Knockup
 * }
 * Knockup
 * }
 * }
 * }
 * }

Forced action modifiers
A special form of CC, but equally powerful, are the forced action modifiers. These force the target to do something, temporarily rendering the player's input useless. Specifically, taunts force the affected champion to attack the taunting champion, while fear causes the affected champion to simply run around aimlessly for the duration.