PatchImpact
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Kennen Patch History

Trending up — 3 of the last 3 changes were buffs.

Every tracked buff, nerf and adjustment for Kennen, newest first — with the exact numbers from each patch. Latest change in Patch 26.20.

Updated

3Buffs
2Nerfs
2Adjustments

Change Timeline

  1. Patch 26.20

    BuffOct 6, 2026

    Kennen's E ability now provides more bonus attack speed.

    E - Lightning Rush

    • Bonus Attack Speed: 40 / 50 / 60 / 70 / 80% ⇒ 50 / 60 / 70 / 80 / 90%
    Patch 26.20 details

  2. Patch 26.16

    BuffAug 11, 2026

    Kennen's ultimate damage and resistances have been increased.

    R - Slicing Maelstrom

    • Bonus Resistances: 20 / 40 / 60 ⇒ 25 / 50 / 75
    • Damage: 40 / 75 / 110 (+22.5% AP) ⇒ 40 / 80 / 120 (+25% AP)
    Patch 26.16 details

  3. Patch 26.9

    BuffApr 28, 2026

    Kennen's abilities now have critical strike synergy for AD builds.

    W

    • [NEW] Passive: Can now Critically Strike for 140% (+40% of Bonus Critical Strike Damage)

    E

    • [NEW] Critical Strikes now extend the duration of Lightning Rush's Attack Speed buff by 1 second.
    Patch 26.9 details

  4. Patch 26.4

    AdjustmentFeb 18, 2026

    Cooldown for R is now constant.

    R - Slicing Maelstrom

    • Cooldown: 120 / 100 / 80 ⇒ 120
    Patch 26.4 details

  5. Patch 14.17

    NerfAug 27, 2024

    Q damage decreased.

    Q - Thundering Shuriken

    • Magic Damage: 75/125/175/225/275 (+85% AP) ⇒ 75/125/175/225/275 (+75% AP)
    Patch 14.17 details

  6. Patch 14.13

    NerfJun 25, 2024

    Kennen's base health has been reduced.

    Base Stats

    • Health: 611 ⇒ 580
    Patch 14.13 details

  7. Patch 14.9

    AdjustmentApr 30, 2024

    Kennen's E now has a damage range indicator and R can be cast while moving.

    E - Lightning Rush

    • newAdded a range indicator for the damage radius.

    R - Slicing Maelstrom

    • newKennen can now cast his ultimate while moving.
    Patch 14.9 details

Kennen FAQ

Was Kennen buffed or nerfed in Patch 26.20?
Kennen was buffed in Patch 26.20 (Bonus Attack Speed 40→50).
What changed for Kennen in Patch 26.20?
Bonus Attack Speed 40→50. Every number is quoted verbatim from the official Patch 26.20 notes.
When was Kennen's last change?
Patch 26.20, released 6 October 2026.
How many times has Kennen been changed?
Kennen has changed 7 times in the patches we track, from Patch 14.9 to Patch 26.20 — 3 buffs, 2 nerfs and 2 adjustments.