Ability Haste (AH) is a statistic that represents cooldown reduction, particularly cooldown of champion abilities. It is distinct from other versions of haste such as summoner spell haste and item haste, which are not visibly tracked in game. This article will discuss all forms of haste for the topic of cooldown reduction.
Ability Haste can be acquired by items, buffs, and runes; it also stacks additively.
The reduced cooldown is determined at the moment an ability is activated. Increasing or decreasing ability haste while the skill is on cooldown will not affect the cooldown.
Gold Value
Types and Application
The type of haste affects various cooldowns:
- Ability haste: Champion ability cooldowns (e.g. ).
- Item haste: Item cooldowns (e.g. or ).
- Summoner spell haste: Summoner spell cooldowns (e.g. ).
Ability haste does not apply to the following:
- Static cooldowns (e.g. ).
- On-target Cooldowns (e.g. ), though there are exceptions.
- Interrupted Durations (e.g. ).
- Rune cooldowns.
Formula
Haste reduces the cooldown (of an ability, active item or summoner spell) according to this formula:
Informally, this means that the casting rate (or casting speed) increases by 1% for every point of haste. For example, adding 100 points of haste will double the casting speed (+100%), cutting the cooldown time by half (50% cooldown reduction); adding another 100 points of haste would result in +200% (or triple) casting speed, cutting the original cooldown time by two thirds (~66.6% cooldown reduction).
In actual matches of regular game modes, values of (ability) haste higher than ~100 rarely occur. This means a reduced cooldown of ~50% is the upper limit to expect.
Cooldown reduction (in percent) may be determined from haste according to this formula:
Ability Haste on a champion is capped at 500 AH (= 83.3% cooldown reduction). This amount of ability haste is not practically attainable in actual games.
Scaling with ability haste
- ( )
- ( )
Increasing ability haste
Items
This table is automatically generated based on the data from Module:ItemData/data.
Item | Cost | Amount | Availability |
---|---|---|---|
2700 ![]() | 10 | All maps | |
1400 ![]() | 10 | All maps | |
2500 ![]() | 20 | All maps | |
3000 ![]() | 25 | All maps | |
950 ![]() | 10 | All maps | |
2600 ![]() | 10 | All maps | |
3100 ![]() | 30 | All maps | |
2800 ![]() | 25 | All maps | |
1100 ![]() | 10 | All maps | |
3300 ![]() | 25 | All maps | |
2600 ![]() | 15 | All maps | |
2300 ![]() | 20 | All maps | |
3000 ![]() | 30 | All maps | |
2800 ![]() | 20 | All maps | |
3300 ![]() | 15 | All maps | |
3300 ![]() | 25 | All maps | |
3300 ![]() | 20 | All maps | |
3100 ![]() | 25 | All maps | |
3300 ![]() | 25 | All maps | |
3100 ![]() | 20 | All maps | |
2500 ![]() | 25 | All maps | |
2800 ![]() | 20 | All maps | |
2800 ![]() | 25 | All maps | |
2500 ![]() | 20 | All maps | |
2800 ![]() | 20 | All maps | |
3200 ![]() | 25 | All maps | |
900 ![]() | 10 | All maps | |
2700 ![]() | 15 | All maps | |
3200 ![]() | 25 | All maps | |
2800 ![]() | 20 | All maps | |
2500 ![]() | 20 | All maps | |
3200 ![]() | 15 | All maps | |
900 ![]() | 10 | All maps | |
3300 ![]() | 20 | All maps | |
950 ![]() | 15 | Howling Abyss | |
3200 ![]() | 15 | All maps | |
3000 ![]() | 15 | All maps | |
3200 ![]() | 20 | All maps | |
2500 ![]() | 20 | All maps | |
3333 ![]() | 25 | All maps | |
950 ![]() | 20 | All maps | |
800 ![]() | 10 | All maps | |
2300 ![]() | 10 | All maps | |
3200 ![]() | 20 | All maps | |
3200 ![]() | 25 | All maps | |
3000 ![]() | 15 | All maps | |
2500 ![]() | 20 | All maps | |
1300 ![]() | 10 | All maps | |
3200 ![]() | 20 | All maps | |
2900 ![]() | 15 | All maps | |
2900 ![]() | 20 | All maps | |
2300 ![]() | 15 | All maps | |
2500 ![]() | 20 | All maps | |
2900 ![]() | 15 | All maps | |
3400 ![]() | 30 | All maps | |
3200 ![]() | 15 | All maps | |
3100 ![]() | 20 | All maps | |
2700 ![]() | 10 | All maps | |
3300 ![]() | 20 | All maps | |
2300 ![]() | 15 | All maps | |
2500 ![]() | 25 | All maps | |
3200 ![]() | 15 | All maps | |
2800 ![]() | 25 | All maps | |
3100 ![]() | 25 | All maps | |
2500 ![]() | 25 | All maps | |
3200 ![]() | 20 | All maps | |
2500 ![]() | 20 | All maps | |
2500 ![]() | 25 | All maps | |
2900 ![]() | 10 | All maps | |
2500 ![]() | 25 | All maps | |
3300 ![]() | 20 | All maps | |
3200 ![]() | 20 | All maps | |
3333 ![]() | 20 | All maps | |
2800 ![]() | 20 | All maps | |
2800 ![]() | 25 | All maps | |
2300 ![]() | 15 | All maps | |
3200 ![]() | 20 | All maps | |
3200 ![]() | 20 | All maps | |
1100 ![]() | 15 | Summoner's Rift, Nexus Blitz | |
3000 ![]() | 10 | All maps | |
1100 ![]() | 10 | Summoner's Rift, Nexus Blitz | |
2700 ![]() | 15 | All maps | |
3000 ![]() | 15 | All maps | |
2400 ![]() | 20 | All maps | |
2600 ![]() | 10 | All maps |
Item passives
- ( )
- ( )
- ( )
- ( )
- ( )
- ( )
- ( )
Runes
Neutral Buffs
Reducing ability cooldowns
Some champions have abilities that decrease their cooldowns by a flat amount, or by a percentage, affecting either their base cooldown or current cooldown, or some abilities can completely refresh their cooldown. Base reduction occurs before ability haste takes effect while flat reduction occurs after ability haste takes effect.
- Depending on built-in reduction type:
- Base (applies before AH)
- Flat (applies after AH)
- Percent (applies to base / current / total cooldown)
- Refresh (cooldown is immediately reduced to 0)
Champion abilities
- Static Reductions
- if Seastone Trident kills its target
- when used against marked targets
- used during
- upon switching or deactivating the current disguise
- upon killing an enemy while in Cougar Form or when Pounce is used upon a Hunted target
- when cancelled
- when cancelled
- based on critical strike chance
- when cancelled
- upon transforming
- when cancelled without beginning
- when interrupted during the charge
- based on total bonus attack speed
- and based on total bonus attack speed
- when cancelled
- when interrupted
- Flat Reduction
monster with a basic attack or damaging them with an ability, doubled whenever hitting the Sweetspot of
upon hitting at least one champion or large - whenever he is hit by a basic attack
- upon hitting any target
- when cancelled prematurely
- when hitting at least one enemy
- whenever a pellet impacts a target
- on subsequent casts after damaging at least one target, stacks up to two times
- based on the rank of
- on-attack against any target
- for every enemy champion she damages with her abilities
- upon scoring a takedown on an enemy champion she damaged within the last 3 seconds
- upon damaging an enemy , doubled against champions
- whenever Maokai casts an ability or is hit by an enemy ability
- on-hit against any target
- whenever triggering on an enemy
- whenever he attacks a target, tripled against champions and monsters
- upon retrieving a thrown axe and everytime he lands a basic attack
- upon basic attacking or hitting an enemy champion with an ability
- on-hit against any target
- if the triggering ability affected at least one champion
- on-hit against any target
- on-hit against any target, quadrupled against champions and whenever triggering or casting on an enemy
- when used to throw the Blue Sentinel
- basic abilities when attacking any target with . Each Bravado attack grants a full charge of
- upon hitting any target with Death Sentence's cast
- whenever critically striking any target, doubled against champions
- whenever triggering on any target
- whenever not hunting any enemies
- on-attack against any target
- whenever Zac picks up a chunk
- for every enemy champion hit by
- for every enemy champion hit by her attacks or abilities
- whenever casting an ability
- and upon casting
- Percentage Reduction
- if it kills its target
- if it kills its target
- if at least one target is hit after the dash
- during
- upon retrieving a dagger for
- if used on an isolated target
- if the cast target is a champion
- basic abilities upon scoring a takedown after acquiring at least one point in
- upon triggering against any valid target
- during
- during
- basic abilities when detonating stacks on champions or epic monsters
- during
- based upon his stacks of
- Cooldown reset / refresh
- upon dashing into a champion with
- after casting
- if used on a target afflicted with
- if the target dies within 0.15 seconds after being hit
- upon catching a
- upon entering
- upon detonating a
- if the target dies to or during Bladesurge's dash
- kills at least one target if it
takedown against an enemy champion
whenever scoring a - and upon
- upon triggering while in Human Form
- after using to gather a different element than her most recent element and after casting
- after casting or
- upon scoring a takedown against a champion she damaged within the last 3 seconds
Umbral Trespass
when emerging from - upon scoring a takedown or detonating at maximum stacks on a champion
- when an enemy champion dies while affected by
- Partial Cooldown Refunding
- if the channel ends for any reason without being interrupted
- if he catches the boomerangs rebound and if he picks up the boulder that is left after
- upon attacking the first time during the buff duration
- upon hitting an enemy champion after evolving Void Seeker by obtaining 100 AP for
- if the cast successfully connects with terrain
- if used as a thrust
- if it kills its target
- if the charge is completed without reactivation
- if none of the charges are used
- if manually cancelled or completed without reactivation
Items
- Percentage Reduction
Increasing basic ability haste
Basic ability haste stacks additively with ability haste.
Increasing ultimate haste
Ultimate haste stacks additively and is applied before ability haste.
Increasing item haste
Item haste stacks additively. It applies to all items with cooldowns, including passives and actives. Item haste stacks additively with ability haste for the cooldowns of items that also scale with ability haste, such as and .
Item Haste | |||||||
---|---|---|---|---|---|---|---|
None | |||||||
None | 0 | 20 | 26 | 32 | 38 | 44 | 50 |
10 | 30 | 36 | 42 | 48 | 54 | 60 |
Item Haste (Equivalent in CDR) | |||||||
---|---|---|---|---|---|---|---|
None | |||||||
None | 0% | 16.67% | 20.63% | 24.24% | 27.54% | 30.56% | 33.33% |
9.09% | 23.08% | 26.47% | 29.58% | 32.43% | 35.06% | 37.5% |
Increasing summoner spell haste
Runes
- There are only two runes that can have their cooldown reduced:
- ability damage. has its remaining cooldown be reduced by a percentage upon hitting an enemy champion with
takedown against an enemy champion.
has its cooldown reset to 1.5 seconds upon scoring a
Trivia
- Ability haste replaced cooldown reduction as a stat on patch V10.23. The change to an upcapped stat allows more flexibility on creating more items with cooldown reduction power.[1]
Last updated: February 3, 2022, patch V12.3
- The highest attainable ability haste is 255.36 AH (on any champion with mana), this is equivalent to 71.86% cooldown reduction.
- Ally:
- Items:
- Runes:
- Buffs:
- Ability haste:
- Items = + + + + + = 180 ability haste
- Runes =
8 = 18 ability haste
+ - Buff = + = 30 ability haste
- Ability Haste Multiplier = 1 +
- Total ability haste = (180 + 18 + 30) × 1.12 = 255.36
= 1.12
- ↑ Yetter, M. (2020, August 7). Preseason 2021 Class Item Goals. leagueoflegends.com.