A critical strike is a basic attack that deals twice its normal damage. In the real world, it's an attack striking a vulnerable area, while in other MMO and/or RPG settings, it ties into the very common "critical hit" mechanic.

It only applies to basic attacks or certain abilities like GangplankSquare Gangplank's Parrrley Parrrley and YasuoSquare Yasuo's Steel Tempest Steel Tempest that act like a basic attack or GarenSquare Garen's Judgment Judgment and Master YiSquare Master Yi's Alpha Strike Alpha Strike, which are specially stated. It's important to note that you cannot score a Critical strike icon critical strike against a building such as a turret or inhibitor (Except JhinSquare Jhin, whose fourth shot receives minicrits against all structures).

Most champions have different attack animations for a Critical strike icon critical strike, though some do not; this includes mages and other champions not meant to be built using basic attacks for damage. Some of these champions performing a Critical strike icon critical strike (if built being able to perform them) may instead have a soundbite that plays in place of an animation, typically a grunt of effort.

Critical strike icon Critical strike is valuable for all champions who primarily deal damage with basic attacks, rather than through abilities. Some champions, such as AsheSquare Ashe, have an affinity for critical hits and benefit more from items that improve them. Players can increase the Chance and the Damage of Critical strike icon critical strikes with items, abilities, and runes.

Chance

Critical strike chance, as the name states, is the chance of a champion's physical attacks dealing a critical strike. Critical strike chance stacks additively. Runes, items, and all abilities can increase critical strike chance.

When averaged over a large number of autoattacks and at Base critical damage (100% bonus damage), critical strike chance is essentially a damage multiplier where each 1% of critical chance adds 1% bonus damage. Thus at 50% critical strike chance a champion will be doing (on average) 150% damage with autoattacks, not counting Bonus critical strike damage. Because of this, critical strike chance scales well with both attack damage and attack speed. The formula for this damage multiplier is given by:

Damage multiplier = 1 + (Critical chance × (1 + Bonus critical damage))

The maximum critical strike chance is hard capped at 100%.

Critical strike chance has a theoretical gold value of Gold 40 per 1% critical strike chance. This makes Brawler's Gloves item Brawler's Gloves the most efficient core item for critical strike chance, as it grants +10% critical chance for the cost of Gold 400 with a Gold 40 per 1% critical chance efficiency. Note that Cloak of Agility item Cloak of Agility has the same efficiency.

Increasing critical strike chance

Items

Item Cost Amount Availability
Brawler's Gloves item Brawler's Gloves400 Gold 10 %Common
Cloak of Agility item Cloak of Agility800 Gold 20 %Common
Essence Reaver item Essence Reaver3400 Gold 20 %Common
Infinity Edge item Infinity Edge3400 Gold 20 %Common
Molten Edge item Molten Edge4400 Gold 20 %Common
Phantom Dancer item Phantom Dancer2600 Gold 30 %Common
Rapid Firecannon item Rapid Firecannon2600 Gold 30 %Common
Runaan's Hurricane item Runaan's Hurricane2600 Gold 30 %Common
Statikk Shiv item Statikk Shiv2600 Gold 30 %Common
Zeal item Zeal1200 Gold 20 %Common

Champion abilities

Note: Any ability boosting attack speed has an indirect impact on the number of crits.

  • FioraSquare Fiora's Bladework Bladework grants her 100% critical chance on her next second attack.
  • JhinSquare Jhin's Whisper Whisper passively grants him 100% critical chance every fourth basic attack.
    • Curtain Call Curtain Call has a guaranteed 100% critical chance on its fourth and final shot.
  • PantheonSquare Pantheon's Certain Death Certain Death grants him 100% critical chance against targets below 15% of their maximum health.
  • RengarSquare Rengar's Thrill of the Hunt Thrill of the Hunt grants him 100% critical chance for his next basic attack against his closest target.
  • ShacoSquare Shaco's Backstab Backstab passively grants him 100% critical chance for every basic attack striking an enemy unit from behind. This cannot happen on the same target more than once every 3 seconds.
  • TalonSquare Talon's Noxian Diplomacy Noxian Diplomacy grants him 100% critical chance if he hits its target within a 170 range.
  • TryndamereSquare Tryndamere's Battle Fury Battle Fury grants him 0.35% critical chance per point of Fury he currently has.
  • YasuoSquare Yasuo's Way of the Wanderer Way of the Wanderer grants him twice the amount of critical chance.

Damage

Critical strike damage refers to the amount of damage that a champion's Critical strike icon critical strike will deal. All champions have 200% critical strike damage by default, except AsheSquare Ashe with 110% damage, JhinSquare Jhin with 150% (reduced to 112% vs structures) and YasuoSquare Yasuo with 180%. In most cases, critical strike damage stacks additively. Damage modifiers apply to critical strike damage normally.

Modifying Critical Strike Damage

Champion Abilities
  • FioraSquare Fiora's Bladework Bladework modifies her base critical damage to 140 / 155 / 170 / 185 / 200% from the default of 200%.
  • JhinSquare Jhin's Whisper Whisper multiplicatively reduces his total critical damage by 25% for basic attacks.
  • ShacoSquare Shaco's Backstab Backstab modifies his base critical damage to 120% / 125% / 130% / 135% / 140% / 145% from the default of 200%.
  • YasuoSquare Yasuo's Way of the Wanderer Intent multiplicatively reduces his total critical damage by 10% for basic attacks and 25% for Steel Tempest Steel Tempest (e.g. 200% to 190% / 175%).
  • Note: AsheSquare Ashe's Frost Shot Frost Shot does not modify the base critical damage. Instead, it does the following:
    • Only allows critical strikes on auto-attacks against targets affected by Frost Shot 2 Frost.
    • Removes the randomness of critical strikes. It does so by simultaneously increasing the proc probability to 100% and reducing the extra damage on proc by the same multiplicative factor.
    • Adds straight 10% multiplicative bonus damage that is unrelated to critical strikes.

Items

  • Infinity Edge item Infinity Edge: Passive: Unique: Critical strike bonus damage is increased by 50%.

Notes

  • For most champions, the maximum critical strike damage available is 200% / Infinity Edge item 250% on their Critical strike icon critical strikes.

Skills affected by Critical Chance

Certain skills are capable of Critical strike icon critical strikes and/or are affected by critical chance.

Miscellaneous

Other skills that are not being affected by critical strikes and chances are displayed as a critical strike due to other reasons.

  • Affected by Critical strike damage
    • FioraSquare Fiora's Bladework Bladework: Causes next second auto-attack to deal increased damage, which is described as a Critical strike icon critical strike.
    • ShacoSquare Shaco's Deceive Deceive: The next basic attack from behind a target within 2.5 seconds will deal increased damage and will be a Critical strike icon critical strike.
  • Unaffected by Critical strike damage
    • AniviaSquare Anivia's Frostbite Frostbite: The 2 × damage modifier applied by being chilled by Flash Frost Flash Frost is given out as a Critical strike icon critical strike.
    • EvelynnSquare Evelynn's Empowered Whiplash Whiplash: While Demon Shade Demon Shade is active, the next cast of Whiplash Whiplash is empowered and deals extra damage, given out as a Critical strike icon critical strike.
      • Last Caress Last Caress: The double damage dealt to enemies under 30% of their maximum health is given out as as a Critical strike icon critical strike.
    • FizzSquare Fizz's Seastone Trident Seastone Trident: The triple damage dealt to a target that has been bleeding for more than 2 seconds is given out as a Critical strike icon critical strike.
    • GnarSquare Gnar's GNAR! GNAR!: The damage is given out as a Critical strike icon critical strike when enemy hits terrain.
    • GragasSquare Gragas' Barrel Roll Barrel Roll: The damage is given out as a Critical strike icon critical strike when the cask ferments after 2 seconds.
    • KarthusSquare Karthus' Lay Waste Lay Waste: Appears as a Critical strike icon critical strike when acting like a single target spell (hitting only one enemy).
    • Kog'MawSquare Kog'Maw's Living Artillery Living Artillery: The double damage dealt to enemies under 40% of their maximum health is given out as a Critical strike icon critical strike.
    • LeBlancSquare LeBlanc's Sigil of Malice Sigil of Malice: When the sigil is shattered by Leblanc's next ability against the target, the combined damage of the sigil and the ability is given out as a Critical strike icon critical strike.
    • NidaleeSquare Nidalee's Takedown Takedown: The 40% increased damage dealt to Prowl Hunted targets is given out as a Critical strike icon critical strike.
    • PantheonSquare Pantheon's Spear Shot Spear Shot: Will Critical strike icon critically strike for a +50% damage bonus due to the passive from Certain Death Certain Death if the target is under 15% health.
    • RyzeSquare Ryze's Overload Overload: The extra damage applied to a target marked with Spell Flux Flux is given out as a Critical strike icon critical strike.
    • VayneSquare Vayne's Condemn Condemn: The double-damage applied by being knocked into a wall is given out as a Critical strike icon critical strike.
    • VladimirSquare Vladimir's Transfusion Transfusion: The extra damage applied when under the effect of Crimson Rush Crimson Rush is given out as a Critical strike icon critical strike.
    • ZiggsSquare Ziggs' Satchel Charge Satchel Charge: The damage is given out as a Critical strike icon critical strike when used to hexplode a tower.


Trivia

  • Similarly in many MMO settings, a number of attack damage-based assassins or secondary assassin-based champions also benefit from high critical strike chance in varying form, as a means to help finish off targets faster as well as to deal more damage in bursts overall.
  • Some champions may actually use their critical strike animation for their empowered-basic attack if they ever activate a single-use on-hit effect, only it does not actually count as an actual critical strike.

Last updated: November 18th, 2017 – V7.22

The most gold efficient way to obtain 100% critical strike chance is with YasuoSquare Yasuo, requiring only Gold 2000:

  • Items:
  • Critical Strike Chance Amplification:
  • Relevant mathematics:
    • YasuoSquare Yasuo Critical Strike Chance = 50% × 2 = 100% critical chance


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