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League of Legends

Kennen: change history

6 changes across 2 patches (Aug 11, 2026 to Oct 6, 2026), newest first. Nerf Radar tracks the 10 most recent official updates for League of Legends, back to May 27, 2026.
Buff 5New 1
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  1. League of Legends Patch 26.20Buff 2Official notes ↗
    Buff
    Summoner's Rift E - Lightning Rush · Bonus Attack Speed
    Bonus attack speed on Kennen's Lightning Rush (E) increases from 40 / 50 / 60 / 70 / 80% to 50 / 60 / 70 / 80 / 90%.
    40 / 50 / 60 / 70 / 80%→50 / 60 / 70 / 80 / 90%
    Source line
    Bonus Attack Speed: 40 / 50 / 60 / 70 / 80% → 50 / 60 / 70 / 80 / 90%
    Buff
    League Classic W - Electrical Surge · Passive Damage
    Passive damage on Kennen's Electrical Surge (W) changes from 40 / 50 / 60 / 70 / 80% total AD to 25 / 40 / 55 / 70 / 85 + 100% bonus AD.
    40 / 50 / 60 / 70 / 80% total AD→25 / 40 / 55 / 70 / 85 + 100% bonus AD
    Source line
    Passive Damage: 40 / 50 / 60 / 70 / 80% total AD → 25 / 40 / 55 / 70 / 85 + 100% bonus AD
  2. League of Legends Patch 26.16Buff 3New 1Official notes ↗
    Buff
    Summoner's Rift R - Slicing Maelstrom · Bonus Resistances
    Bonus resistances on Kennen's Slicing Maelstrom (R) increase from 20 / 40 / 60 to 25 / 50 / 75.
    20 / 40 / 60→25 / 50 / 75
    Source line
    Bonus Resistances: 20 / 40 / 60 → 25 / 50 / 75
    Buff
    Summoner's Rift R - Slicing Maelstrom · Damage
    Damage on Kennen's Slicing Maelstrom (R) increases from 40 / 75 / 110 (+22.5% AP) to 40 / 80 / 120 (+25% AP).
    40 / 75 / 110 (+22.5% AP)→40 / 80 / 120 (+25% AP)
    Source line
    Damage: 40 / 75 / 110 (+22.5% AP) → 40 / 80 / 120 (+25% AP)
    Buff
    Summoner's Rift R - Slicing Maelstrom · Maximum Damage
    Maximum damage on Kennen's Slicing Maelstrom (R) increases from 300 / 562.5 / 825 (+168.75% AP) to 300 / 600 / 900 (+187.5% AP).
    300 / 562.5 / 825 (+168.75% AP)→300 / 600 / 900 (+187.5% AP)
    Source line
    Maximum Damage: 300 / 562.5 / 825 (+168.75% AP) → 300 / 600 / 900 (+187.5% AP)
    New
    League Classic
    Kennen joins League Classic.
    Source line
    NEW Kennen
    • Kennen makes his return in a somewhat familiar form, ready to dive-bomb into enemy teams with Slicing Maelstrom or play it cool as an AD auto-attacker.
    • Passive - Mark of the Storm
    • Kennen's abilities add stacking marks to their targets. Upon reaching 3 stacks, they're stunned and Kennen refunds some energy.
    • Q - Thundering Shuriken
    • Throw a shuriken in a straight line, damaging and marking the first enemy hit.
    • W - Electrical Surge
    • Passive: Every few attacks, Kennen's attack deals bonus damage and marks his target.
    • Active: Kennen damages and applies an additional mark to all nearby marked enemies.
    • E - Lightning Rush
    • Kennen becomes a ball of lightning, gaining bonus movement speed and resistances. Enemies he collides with while a ball of lightning are damaged and marked.
    • R - Slicing Maelstrom
    • A maelstrom follows Kennen for a few seconds, damaging and marking a random enemy champion several times per second.

Each step links to the full patch breakdown and to Riot Games's official notes. Changes listed under a general heading such as "Bug fixes" are not included here; search to find every mention.