PatchImpact
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Jax Patch History

Trending up — 2 of the last 3 changes were buffs.

Every tracked buff, nerf and adjustment for Jax, newest first — with the exact numbers from each patch. Latest change in Patch 26.12.

Updated

4Buffs
4Nerfs
0Adjustments

Change Timeline

  1. Patch 26.12

    BuffJun 9, 2026

    Jax's mana cost and damage have been increased.

    Q - Leap Strike

    • Mana Cost: 65 ⇒ 50

    E - Counter Strike

    • Target Max Health Damage: 3.5% minimum damage / 7% maximum damage ⇒ 4% minimum damage / 8% maximum damage
    Patch 26.12 details

  2. Patch 26.1

    BuffJan 7, 2026

    Gains additional attack speed per stack at level 19.

    Passive - Relentless Assault

    • Now gains an additional 1.5% attack speed per stack at level 19.
    Patch 26.1 details

  3. Patch 25.19

    NerfSep 23, 2025

    Jax's base health has been reduced.

    Base States

    • Base HP: 665 ⇒ 650

    R - Grandmaster-At-Arms

    • Initial armor gain: 25 / 50 / 75 (+ 40% bonus AD) ⇒ 45 / 60 / 75 (+ 40% bonus AD)
    Patch 25.19 details

  4. Patch 25.12

    BuffJun 10, 2025

    Increased passive attack speed.

    Passive - Relentless Assault

    • Bonus Attack Speed per Stack: 3.5 / 5 / 6.5 / 8 / 9.5 / 11% ⇒ 5 / 6.5 / 8 / 9.5 / 11 / 12.5%
    Patch 25.12 details

  5. Patch 14.22

    NerfNov 5, 2024

    R cooldown increased and damage decreased.

    R - Grandmaster-At-Arms

    • Cooldown: 100/90/80 ⇒ 110/100/90
    • Damage: 150/250/350 (+100% AP) ⇒ 100/175/250 (+100% AP)
    Patch 14.22 details

  6. Patch 14.18

    BuffSep 10, 2024

    R armor, MR, on-hit damage, and armor per champion hit increased.

    R - Grandmaster-At-Arms

    • Base Armor Granted: 15/40/65 ⇒ 25/50/75
    • Base Magic Resist Granted: 9/24/39 ⇒ 15/30/45
    • On-Hit Magic Damage: 60/110/160 (+60% AP) ⇒ 70/120/170 (+60% AP)
    • Armor Per Additional Champion Hit: 15/20/25 (+10% bonus AD) ⇒ 20/25/30 (+10% bonus AD)
    Patch 14.18 details

  7. Patch 14.14

    NerfJul 16, 2024

    Jax's E ability has a longer cooldown at early levels.

    E - Counter Strike

    • Cooldown: 15/13.5/12/10.5/9 ⇒ 17/15/13/11/9 seconds
    Patch 14.14 details

  8. Patch 14.2

    NerfJan 23, 2024

    Jax's E damage is decreased.

    E - Counter Strike

    • Minimum Damage: 55/85/115/145/175 (+70% AP) (+4% of target's maximum health) ⇒ 40/70/100/130/160 (+70% AP) (+3.5% of target's maximum health)
    Patch 14.2 details

Jax FAQ

Was Jax buffed or nerfed in Patch 26.12?
Jax was buffed in Patch 26.12 (Mana Cost 65→50).
What changed for Jax in Patch 26.12?
Mana Cost 65→50. Every number is quoted verbatim from the official Patch 26.12 notes.
When was Jax's last change?
Patch 26.12, released 9 June 2026.
How many times has Jax been changed?
Jax has changed 8 times in the patches we track, from Patch 14.2 to Patch 26.12 — 4 buffs, 4 nerfs and 0 adjustments.