Release version[]

V14.13

• Stats
  • Base health reduced to 580 from 611.

V14.9

• 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.

V14.2

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

V13.18

• 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.

V13.16

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

V13.6

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

V13.5

• 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.

V12.19

• Lightning Rush
  • Undocumented: Attack speed cap can now be exceeded during the attack speed buff.
    • This change is documented on V12.20.

V12.18

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

V12.15

• 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.

V12.10

• 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.

V12.6

• Electrical Surge
  • Undocumented: Effect radius increased to 1600 units.^(bug)

V12.5

• 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%.

V11.19

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

V11.15

• 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.

V11.10

• 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.

V11.8

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

V10.16

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

V10.13

• Kennen M.D.
  • Updated visual effects.

V9.14

• Stats
  • Base attack damage reduced to 48 from 50.544.
  • Attack damage growth increased to 3.75 from 3.3.
  • Attack speed at level 1 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%.

V9.13 - June 27th Hotfix

• Lightning Rush
  • Bug Fix: Now has the proper range.

V9.13

• Lightning Rush
  • Now more quickly and reliably applies its effects to enemies they hit.

V9.9

• 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.

V9.6

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

V9.4

• 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 Kennen and Super Kennen 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 Kennen
  • Unique VFX updated based on the same principles as the above.
• Super Kennen
  • Does a superhero pose during Lightning Rush.

V8.22

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

V8.14

• General
  • New SFX on entire kit.

V8.10

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

V8.9

• 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.

V8.3

• Stats
  • Base health regeneration reduced to 5.5 from 5.592.

V7.22

• Stats
  • Base armor increased to 29 from 24.3.
  • Base health increased to 541 from 535.72.
  • Health growth increased to 84 from 79.
• Lightning Rush
  • Active base damage reduced to 80 / 120 / 160 / 200 / 240 from 85 / 125 / 165 / 205 / 245.

V7.13

• 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.

V7.9

• Stats
  • Magic resistance growth increased to 0.5 from 0.

V7.7

• Kennen M.D.
  • Bug Fix: Fixed some dark textures appearing on the scalpel in his basic attack.
• Blood Moon Kennen
  • Lightning Rush
    • Bug Fix: Fixed a bug where a random particle would appear when using it.

V7.4

• General
  • Adjusted splash artwork for Deadly Kennen, Swamp Master Kennen, Kennen M.D. and Arctic Ops Kennen.

V7.3

• 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.

V7.1

• 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).

V6.17

• 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.

V6.9

• General
  • New ability icons.
• Mark of the Storm
  • Mark duration reduced to 6 seconds from 6.25.
  • Diminishing returns stun duration reduced to 6 seconds from 7.
  • Additional stun duration 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
  • Range reduced to 750 from 800.
  • Energy cost reduced to 40 from 45.
• Slicing Maelstrom
  • Duration reduced to 3 seconds at all ranks from 3 / 4 / 5.
  • Damage tick interval increased to 0.5 seconds from 0.25.
  • New Effect: Targeting changed to all enemies within AoE from random.
  • Removed: 3-hits-per-target limit.
  • New Effect: Enemies take 25% less damage with each successive hit, down to a minimum of 50%.
  • As a result of these changes, maximum possible individual damage increased to 300 / 543.75 / 787.5 (+ 150% AP) from 240 / 435 / 630 (+ 120% AP)

V6.8

• General
  • New splash artwork for Original Kennen.

V6.7

• General
  • Splash artwork for Swamp Master Kennen updated to the Chinese art.

V5.13

• Mark of the Storm
  • Bug Fix: Fixed a tooltip bug listing a 1 second stun duration instead of 1.25.
• Electrical Surge
  • Bug Fix: Sometimes not applying Mark of the Storm to enemies within Slicing Maelstrom.

V5.3

• Electrical Surge
  • New Effect: Now hits all enemies within Slicing Maelstrom, in addition to enemies afflicted by Mark of the Storm.
• Slicing Maelstrom
  • Bug Fix: Hitting the same target every 0.25 seconds instead of every 0.5 seconds.

V4.21

• Electrical Surge
  • New Effect: Performs additional checks on-cast (besides after cast time).
• Slicing Maelstrom
  • Damage tick interval reduced to 0.25 seconds at all ranks from 0.5 / 0.4 / 0.33.
  • New Effect: Cannot hit the same target more than once every 0.5 seconds.
  • Tooltip updated (storm duration from maximum hits, duration unchanged).

V4.5

• Stats
  • Base armor increased to 18 from 14.

V3.14

• Electrical Surge
  • Bug Fix: 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.
    • Mark of the Storm no longer wears off mid-cast.
    • If cast just as Mark of the Storm is consumed by another ability, Kennen will still deal damage and add a stack as normal.

V3.9

• Stats
  • Base attack damage reduced to 47.2 from 51.3.
• Mark of the Storm
  • Duration reduced to 6 seconds from 8.

V3.02

• Electrical Surge
  • Removed: Is no longer consumed when attacking wards.

V3.01

• Slicing Maelstrom
  • Energy cost reduced to 0 from 40.

V1.0.0.154

• General
  • Basic attack updated to be more responsive.

V1.0.0.152

• Stats
  • Movement speed increased to 335 from 310.

V1.0.0.142

• General
  • Basic attack animations updated to be more responsive.
• Stats
  • Attack range reduced to 550 from 575.

V1.0.0.134

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

V1.0.0.123

• Thundering Shuriken
  • AP ratio increased to 75% AP) from 66% AP.
• Lightning Rush
  • AP ratio increased to 60% AP from 55% AP.
  • Energy cost reduced to 100 / 95 / 90 / 85 / 80 from 100 at all ranks.

V1.0.0.118

• Electrical Surge
  • New Effect: Buff icon is gray while charging.

V1.0.0.109

• Mark of the Storm
  • Duration reduced to 8 seconds from 12.
• Electrical Surge
  • Range reduced to 800 from 825.

V1.0.0.101

• Lightning Rush
  • Removed: Casting while disabled.

V1.0.0.99

• Mark of the Storm
  • Stun duration reduced to 1 second from 1.25.
  • New Effect: Stun has a diminished duration if applied to same target more than once within 7 seconds.
• Electrical Surge
  • AP ratio increased to 55% AP from 45% AP.
• Lightning Rush.
  • Energy cost reduced to 100 from 110.
  • New Effect: Grants 10 / 20 / 30 / 40 / 50 bonus resistances for 4 seconds.
• Slicing Maelstrom
  • AP ratio increased to 40% AP from 33% AP.
  • Bolts increased to 6 / 10 / 15 from 6 / 8 / 10 (3-hits-per-target limit unchanged).
  • Removed: Cap of only applying a single Mark of the Storm per target.

V1.0.0.86

• General
  • New sound effects for basic attacks against different materials.

V1.0.0.82

• Added
• 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.
• Thundering Shuriken (Q)
  • 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 (W)
  • 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 (E)
  • 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.

See also[]