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Kennen League of Legends Patch HistoryPC

Kennen

Mage

League of Legends (PC) Kennen in Wild Rift

Kennen Win Rate

WR47.0%PR1.9%BR1.0%Diamond+ Top

Kennen Current Status

Kennen was last adjusted in Patch 26.9 (). Across 54 patches, Kennen has received 13 buffs, 13 nerfs, 27 adjustments since release in Patch 1.0.0.82.

Abilities
Mark of the StormPC
Passive - Mark of the Storm

Innate: Kennen's abilities apply a stack of Mark of the Storm to enemies hit for 6 seconds, refreshing on subsequent applications and stacking up to 3 times.

The third stack against a target consumes them all to stun them for 1.25 seconds and restore 25 energy. The stun duration is reduced to 0.5 seconds if this occurs on the same target again within 6 seconds.

Slicing Maelstrom can apply only up to 3 stacks on a target.

Thundering ShurikenPC
Q - Thundering Shuriken
Cost: 60 / 55 / 50 / 45 / 40 Energy
CD: 7 / 6.25 / 5.5 / 4.75 / 4
Cast Time: 0.175
Range: 1050

Active: Kennen throws a shuriken in the target direction that deals magic damage to the first enemy hit.

Magic Damage: 75 / 125 / 175 / 225 / 275 (+ 75% AP)
Electrical SurgePC
W - Electrical Surge
Cost: 40 Energy
CD: 13 / 11.25 / 9.5 / 7.75 / 6
Cast Time: 0.25
Effect Radius: 775

Passive: Kennen's basic attacks on-attack generate a stack of Electrical Surge, stacking up to 4 times. At 4 stacks, his next basic attack on-attack consumes all stacks to both deal bonus magic damage and apply a stack of Mark of the Storm on-hit. This damage can critically strike for 140 damage. Kennen gains maximum stacks of Electrical Surge upon respawning.

Bonus Magic Damage: 35 / 45 / 55 / 65 / 75 (+ 80 / 90 / 100 / 110 / 120% bonus AD) (+ 35% AP)
Magic Damage: 70 / 95 / 120 / 145 / 170 (+ 80% AP)

Active: Kennen sends out a surge of electricity that deals magic damage to all nearby enemies afflicted by Mark of the Storm or within Slicing Maelstrom.

An enemy within 775 units with Mark of the Storm or inside Slicing Maelstrom is required to cast this ability. The target does not have to be to be targeted by this ability.

Lightning RushPC
E - Lightning Rush
Cost: 80 Energy
CD: 10 / 9 / 8 / 7 / 6
Cast Time: None
Effect Radius: 200

Active: Kennen turns into lightning for 2 seconds, becoming unable to declare basic attacks but gaining ghosting and 100% bonus movement speed. He deals magic damage to enemies he passes through, reduced to 65% against non-champions, and restores 40 energy upon damaging at least one enemy.

Magic Damage: 80 / 120 / 160 / 200 / 240 (+ 80% AP)
Non-Champion Damage: 52 / 78 / 104 / 130 / 156 (+ 52% AP)
Bonus Attack Speed: 40 / 50 / 60 / 70 / 80%

Lightning Rush can be recast after 0.5 seconds, and does so automatically after the duration.

Recast: Kennen ends Lightning Rush to gain bonus attack speed and be allowed to exceed the attack speed cap by the amount gained for 4 seconds. Critical strikes extend the bonus attack speed's duration by 1 second, up to the original duration.

Lightning Rush's recast can be used while affected by cast-inhibiting crowd control.

Slicing MaelstromPC
R - Slicing Maelstrom
CD: 120
Cast Time: 0.25
Effect Radius: 550

Active: Kennen summons a storm around himself for 3 seconds, gaining bonus armor and bonus magic resistance for the duration.

Bonus Resistances: 20 / 40 / 60
Magic Damage Per Bolt: 40 / 75 / 110 (+ 22.5% AP)
Total Single-Target Damage: 300 / 562.5 / 825 (+ 168.75% AP)

The storm strikes lightning bolts down on nearby enemies every 0.5 seconds, each one dealing magic damage.

Slicing Maelstrom gains 10% additional damage for each subsequent strike a target has received, up to a combined total of 150% of the initial strike's damage.

Kennen can move during Slicing Maelstrom's cast time.

Base Stats

Health: 580
Health Per Level: 98
Mana: 200
Attack Damage: 48
AD Per Level: 3.75
Attack Speed: 0.625
AS Per Level: 3.4
Armor: 29
Armor Per Level: 4.95
Magic Resist: 30
MR Per Level: 1.3
Movement Speed: 335
Range: 550
Health Regen: 5.5
HP Regen Per Level: 0.65
Mana Regen: 50

Kennen Changes

Patch 26.9

change

Our second lost playstyle is AD Kennen. In this case, we're adding critical strike synergy to Kennen's W and E. While a more attack speed focused on-hit hybrid build may stand out as a more intuitive choice for an auto-attack focused Kennen, we actually think it would spill over too hard into his standard AP builds and want to avoid adjustments to his typical playstyle just to enable this one.

Electrical Surge

  • New Effect: Empowered attack can now critically strike for 140% (+ 40% bonus critical strike damage) damage.
  • Stacks are now consumed on-attack, instead of when the empowered attack hits.
  • New Effect: The ability's effects can now apply for every basic attack on-hit that is part of the empowered attack's cast instance (i.e like the attacks from Runaan's Hurricane Wind's Fury). [https://www.youtube.com/watch?v=_VnBwaIRfs4]

Lightning Rush

  • New Effect: Critical strikes now extend the bonus attack speed's duration by 1 second, up to the original duration.

Patch 26.4

nerf

Kennen's so sneaky that he snuck under players' radars for a while, but as the new season has dawned, many of you have come to understand that small shurikens can pack a big punch. We want to create windows of opportunity to succeed against him, which means preserving his power when everything's available, but creating larger gaps between those moments.

Slicing Maelstrom

  • Cooldown increased to 120 seconds at all ranks from 120/100/80.

Patch 25.14

change

Electrical Surge

  • Bug Fix: Attack is no longer consumed on traps.

Patch 14.17

nerf

Q damage decreased.

Thundering Shuriken

  • AP ratio reduced to 75% AP from 85% AP.

Patch 14.13

nerf

Base health reduced.

Stats

  • Base health reduced to 580 from 611.

Patch 14.9

buff

E damage range indicator added. R animation added, can now cast while moving.

Lightning Rush

  • Indicator now includes a decal for the ability's collision radius.

Slicing Maelstrom

  • Updated cast animation.
  • New Effect: Caster can now move during the cast time.

Patch 14.2

buff

Electrical Surge

  • New Effect: Now grants maximum passive stacks on respawn.

Patch 13.18

buff

E energy cost decreased. R cooldown now decreases with rank.

Lightning Rush

  • Energy cost reduced to 80 at all ranks from 100/95/90/85/80.

Slicing Maelstrom

  • Cooldown reduced to 120/100/80 seconds from 120 at all ranks.

Patch 13.16

change

Infernal

  • Bug Fix: VFX no longer conflicts with his character model to the extent that he becomes indistinguishable.

Patch 13.6

change

Lightning Rush

  • Bug Fix: Now properly deals 65% damage to jungle monsters.

Patch 13.5

buff

Q cooldown decreased, magic damage increased. W range indicator for marked targets added. E damage to minions increased.

Thundering Shuriken

  • Base damage increased to 75/125/175/225/275 from 75/120/165/210/255.
  • AP ratio increased to 85% AP from 75% AP.
  • Cooldown reduced to 7/6.25/5.5/4.75/4 seconds from 8/7/6/5/4.

Electrical Surge

  • New Effect: When an enemy champion becomes marked, now shows a range indicator to Kennen.

Lightning Rush

  • Damage against non-champions increased to 65% from 50%.
  • Non-champion base damage increased to 52/78/104/130/156 from 40/60/80/100/120.
  • Non-champion AP ratio increased to 52% AP from 40% AP.

Patch 12.20

change

E bonus attack speed adjusted.

E - Lightning Rush

  • newShadow Shuriken Jutsu: After ending his E, Kennen’s bonus attack speed buff will now allow him to surpass the 2.5x attack speed limit

Patch 12.18

change

Lightning Rush

  • Bug Fix: VFX on the character model no longer overrides the VFX for Exhaust.

Patch 12.15

buff

W cooldown decreased early, magic damage increased. R ability power scaling increased.

Electrical Surge

  • Active base damage increased to 70/95/120/145/170 from 60/85/110/135/160.
  • Cooldown reduced to 13/11.25/9.5/7.75/6 seconds from 14/12/10/8/6.

Slicing Maelstrom

  • AP ratio per tick increased to 22.5% AP from 20% AP.

Patch 12.10

buff

Stats

  • Base health increased to 611 from 541.
  • Health growth increased to 98 from 84.
  • Armor growth increased to 4.95 from 3.75.
  • Magic resistance growth increased to 1.3 from 0.5.

Electrical Surge

  • Undocumented: Effect radius reduced to 775 units from 1600.

Patch 12.6

buff

Electrical Surge

  • Undocumented: Effect radius increased to 1600 units.2

Patch 12.5

buff

W full stack bonus damage on basic attacks increased.

Electrical Surge

  • On-hit base damage increased to 35/45/55/65/75 from 20/30/40/50/60.
  • On-hit AP ratio increased to 35% AP from 25% AP.
  • On-hit bonus AD ratio increased to 80/90/100/110/120% bonus AD from 60/70/80/90/100%.

Patch 11.19

nerf

Q damage decreased.

Thundering Shuriken

  • Base damage reduced to 75/120/165/210/255 from 85/130/175/220/265.
  • AP ratio reduced to 75% AP from 80% AP.

Patch 11.15

buff

Q damage increased.

Thundering Shuriken

  • Base damage increased to 85/130/175/220/265 from 75/115/155/195/235.
  • AP ratio increased to 80% AP from 75% AP.

Patch 11.10

buff

W max stacks bonus damage increased.

Electrical Surge

  • On-hit base damage increased to 20/30/40/50/60 from 10/20/30/40/50.
  • On-hit AP ratio increased to 25% AP from 20% AP.

Patch 11.8

change

Electrical Surge

  • Bug Fix: Fixed a bug where the SFX would continue to play after cast until his death.

Patch 10.16

change

Lightning Rush

  • Bug Fix: Killing the clone from Hallucinate and dying to the detonation no longer causes the ability to be permanently swapped to the recast.

Patch 10.13

change

Kennen M.D.

  • Updated visual effects.

Patch 9.14

change

Stats

  • Base attack damage reduced to 48 from 50.544.
  • Attack damage growth increased to 3.75 from 3.3.
  • Base attack speed reduced to 0.625 from 0.69.

Lightning Rush

  • Bonus attack speed increased to 40/50/60/70/80% from 30/40/50/60/70%.

Patch 9.13

change

Lightning Rush

  • Now more quickly and reliably applies its effects to enemies they hit.
  • Bug Fix: Now has the proper range.

Patch 9.9

change

Lightning Rush

  • Removed: No longer grants 10/20/30/40/50 bonus armor and magic resistance while active.

Slicing Maelstrom

  • new Effect: Now grants 20/40/60 bonus armor and magic resistance for the duration.

Patch 9.6

buff

Slicing Maelstrom

  • New Effect: Now triggers effects that are triggered by DoT AoE abilities.

Patch 9.4

change

General

  • Updated visual effects.
  • Basic attack shuriken model and hit VFX updated for readability between basic attack, empowered attack, and Thundering Shuriken.
  • All skins aside from Blood Moon and Super use the base VFX aside from changing the shape of their shuriken where applicable.

Mark of the Storm

  • Proc VFX updated to better indicate source of the stun.
  • Passive marks on minions are dimmer.

Thundering Shuriken

  • Shuriken model and hit VFX updated for readability between basic attack, empowered attack, and Thundering Shuriken.

Electrical Surge

  • Surge VFX updated.
  • Empowered attack shuriken model and hit VFX updated for readability between basic attack, empowered attack, and Thundering Shuriken.

Lightning Rush

  • VFX updated to indicate area of effect and show his model during the animation.

Slicing Maelstrom

  • VFX updated to reduce visual noise.

Blood Moon

  • Unique VFX updated based on the same principles as the above.

Super

  • Does a superhero pose during Lightning Rush.

Patch 8.22

change

Electrical Surge

  • Bug Fix: No longer stops moving after casting it.

Patch 8.14

change

General

  • New SFX on entire kit.

Patch 8.10

change

Electrical Surge

  • Bug Fix: Passive damage now correctly appears on Death Recap.

Patch 8.9

change

Electrical Surge

  • Passive base damage changed to 10/20/30/40/50 from 15/20/25/30/35.
  • Passive bonus AD ratio increased to 60/70/80/90/100% bonus AD from 60% at all ranks.
  • Passive AP ratio reduced to 20% AP from 30% AP.
  • Active base damage reduced to 60/85/110/135/160 from 65/95/125/155/185.
  • Active AP ratio increased to 80% AP from 55% AP.

Lightning Rush

  • New Effect: If Lightning Rush damages an enemy champion, he gains 30/40/50/60/70% bonus attack speed for 4 seconds upon exiting Lightning Rush.
  • Bonus resistances now only persists while in lightning form, from a static 4 seconds.

Patch 8.3

nerf

Stats

  • Base health regeneration reduced to 5.5 from 5.592.

Patch 7.22

nerf

Lightning Rush

  • Active base damage reduced to 80/120/160/200/240 from 85/125/165/205/245.

Patch 7.13

change

Electrical Surge

  • New Effect: Passive now deals 15/20/25/30/35 base damage.
  • New Effect: Passive now scales with 30% AP.
  • Passive AD ratio changed to 60% bonus AD at all ranks from 40/50/60/70/80% AD.
  • New Effect: Passive counter increments upon launching an attack, previously was upon landing a hit.
  • Runaan's Hurricane no longer grants extra stacks on secondary targets.

Lightning Rush

  • AP ratio increased to 80% AP from 60% AP.

Patch 7.7

change

Kennen M.D.

  • Bug Fix: Fixed some dark textures appearing on the scalpel in his basic attack.

Blood Moon

  • Lightning Rush
  • Bug Fix: Fixed a bug where a random particle would appear when using it.

Patch 7.3

change

General

  • Bug Fix: Fixed a bug on most of Kennen's skins where the on-hit particles for his basic attack were not properly appearing.

Patch 7.1

change

Slicing Maelstrom

  • Base damage reduced to 40/75/110 from 80/145/210.
  • AP ratio reduced to 20% AP from 40% AP.
  • Per target successive strike modifier increased to 100/110/120/130/140/150% from 100/75/50/50/50/50% on strikes 1 to 6.
  • New Effect: Successive maelstrom hits against the same enemy deal an additional 10% damage for each hit they've already suffered from this storm.
  • Removed: Each time an enemy is struck, further hits deal 25% less damage (minimum of 50% damage).

Patch 6.17

change

General

  • Kennen's basic attack animation has been updated to better match when the shuriken leaves his hand.

Stats

  • Basic attack missile speed increased to 1700 from 1600.

Electrical Surge

  • Empowered attack missile speed reduced to 1700 from 1800.

Patch 6.9

change

General

  • New ability icons.

Mark of the Storm

  • Mark duration reduced to 6 seconds from 6.25.
  • Diminishing return duration reduced to 6 seconds from 7.
  • Duration of additional stuns reduced to 0.5 seconds from 0.6.

Thundering Shuriken

  • Energy cost reduced to 60/55/50/45/40 from 65/60/55/50/45.

Electrical Surge

  • Energy cost reduced to 40 from 45.
  • Range reduced to 750 from 800.

Slicing Maelstrom

  • Duration reduced to 3 seconds at all ranks from 3/4/5.
  • Tick interval increased to 0.5 seconds from 0.25.
  • New Effect: Now damages all enemies inside but can only apply a maximum of 3 stacks of Mark of the Storm.
  • Removed: 3 hit limit.
  • New Effect: Enemies take 25% less damage with each successive strike against them, down to a minimum of 50%.
  • Max. damage increased to 300/543.75/787.5 (+ 150% AP) from 240/435/630 (+ 120% AP)

Patch 5.13

change

Mark of the Storm

  • Fix a bug in the tooltip where stun duration is listed as 1 instead of 1.25.

Electrical Surge

  • Fixed a bug where it sometimes wouldn't apply Mark of the Storm to enemies within Slicing Maelstrom.

Patch 5.3

buff

Electrical Surge

  • New Effect: In addition to enemies marked with Mark of the Storm, will now damage enemies within Slicing Maelstrom.

Slicing Maelstrom

  • Fixed a bug where the ability hit the same target every 0.25 seconds, instead of the intended once every 0.5 seconds.

Patch 4.21

nerf

Electrical Surge

  • Now performs additional checks on-cast, not just after the casting time.

Slicing Maelstrom

  • Damage interval reduced to per 0.25 seconds at all ranks from per 0.5 / 0.4 / 0.33.
  • Cannot strike the same enemy more than once every 0.5 seconds (previously could strike the same target every time).
  • Tooltip now reflects the duration of the storm rather than maximum number of strikes. Duration unchanged.

Patch 3.14

change

Electrical Surge

  • Fixed a bug where Electrical Surge would not properly hit a target if Mark of the Storm wore off or was fully consumed before the casting time of Electrical Surge completed. This fixed two scenarios:
  • Mark of the Storm will no longer wear off in the middle of Kennen casting Electrical Surge.
  • If Kennen casts Electrical Surge just as Mark of the Storm is consumed by another ability, he'll still deal damage and add a stack as normal.

Patch 3.9

nerf

Stats

  • Base attack damage at level 1 reduced to 47.2 from 51.3.

Mark of the Storm

  • Mark duration reduced to 6 seconds from 8.

Patch 3.1

nerf

Slicing Maelstrom

  • No longer has an energy cost.

Patch 1.0.0.154

change

General

  • Basic attack has been returned so it's more responsive.

Patch 1.0.0.142

nerf

General

  • Attack animations are now more responsive.

Stats

  • Attack range reduced to 550 from 575.

Patch 1.0.0.134

nerf

Thundering Shuriken

  • Cooldown increased to 8/7/6/5/4 from 7/6/5/4/3.

Patch 1.0.0.123

buff

Thundering Shuriken

  • Ability power ratio increased to 0.75 from 0.66.

Lightning Rush

  • Ability power ratio increased to 0.6 from 0.55.
  • Energy cost reduced to 100/95/90/85/80 from 100 at all ranks.

Patch 1.0.0.109

nerf

Mark of the Storm

  • Duration reduced to 8 seconds from 12.

Electrical Surge

  • Range decreased to 800 from 825.

Patch 1.0.0.101

nerf

Lightning Rush

  • No longer castable while disabled.

Patch 1.0.0.99

change

Mark of the Storm

  • Stun duration reduced to 1 second from 1.25. It now has a diminished stun effect if applied more than once within seven seconds.

Electrical Surge

  • Ability power ratio increased to 0.55 from 0.45.

Lightning Rush

  • Energy cost reduced to 100 from 110.
  • It now provides 10/20/30/40/50 magic resistance and armor for the duration.

Slicing Maelstrom

  • Ability power ratio increased to 0.4 from 0.33.
  • Maximum number of bolts increased to 6/10/15 from 6/8/10 (this still retains the cap of 3 hits per target).
  • Removed the cap of applying only 1 Mark of the Storm per target.

Patch 1.0.0.82

new

Kennen added to League of Legends

General

  • Kennen is a new magical assassin ninja, using the energy system to cast his spells instead of mana.

Thundering Shuriken

  • Kennen throws a lightning infused shuriken towards a location, damaging the first enemy it hits and adding a Mark of the Storm to them.

Electrical Surge

  • Kennen passively deals extra damage and adds a Mark of the Storm to opponents every few attacks, and can activate this ability to deal damage to all nearby marked units and add another mark.

Lightning Rush

  • Kennen transforms into a writhing ball of electricity, receiving a massive energy boost and gaining the ability to move through units. Enemy units he passes through receive damage and gain a Mark of the Storm.

Slicing Maelstrom (Ultimate)

  • Kennen summons an electrical storm around him, casting down lightning bolts to a random enemy champions near him multiple times per second.

Mark of the Storm (Innate)

  • Kennen's abilities add Marks of the Storm to opponents they hit, which explode at 3 stacks, stunning the opponent and restoring some of Kennen's energy.

Related League of Legends Champions

Kennen League of Legends FAQ

Frequently Asked Questions
When was Kennen last changed in League of Legends?
Kennen was last adjusted in League of Legends Patch 26.9, released April 28, 2026.
How many times has Kennen been buffed or nerfed in LoL?
Kennen has been changed in 54 League of Legends patches: 13 buffs, 13 nerfs, 27 adjustments.
Was Kennen changed in LoL Patch 26.14?
No - Kennen was not changed in Patch 26.14. Its most recent change was in Patch 26.9.
When was Kennen released in League of Legends?
Kennen was released in League of Legends in Patch 1.0.0.82 on April 8, 2010.