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League of Legends Arena Mode: Patch Notes (Patch 26.17)

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Patch Notes
Updated on Aug 25, 2026
Aug 25, 2026

Arena Mode: Latest News, Updates, Buffs and Nerfs

Welcome to our patch notes breakdown for League of Legends Arena Mode. We will break down all the new changes in Arena Mode on Patch 26.17. We recommend following along with the official patch notes and our own patch notes breakdown for League of Legends to stay up to date with all the major changes coming to League of Legends.

Champions

Ambessa 

E - Lacerate

  • Cooldown: 13 / 12 / 11 / 10 / 9s ⇒ 15 / 14 / 13 / 12 / 11s

R - Public Execution

  • Armor Penetration: 10% / 20% / 30% ⇒ 7.5% / 15% / 22.5%
  • Bonus Attack Damage Ratio: 80% ⇒ 70%

Garen 

Passive - Perseverance

  • Out of Combat Timer: 8s ⇒ 4s

W - Courage

  • Resist per Stack: 0.2 ⇒ 0.5
  • Maximum Resist Granted: 30 ⇒ 60

Gragas 

Passive - Happy Hour

  • Cooldown: 12 / 10.5 / 9 / 7.5 / 6s ⇒ 8 / 7 / 6 / 5 / 4s

K'Sante 

W - Path Maker

  • Cooldown: 14 / 13 / 12 / 11 / 10s ⇒ 12 / 11 / 10 / 9 / 8s

E - Footwork

  • Bonus Health Ratio: 13.5% ⇒ 15%

Kled 

Passive - Skaarl, the Cowardly Lizard

  • Remount Cooldown: 12s ⇒ 5s

LeBlanc 

R - Mimic

  • Cooldown: 45s / 35s / 25s ⇒ 30s / 20s / 10s

Renata Glasc 

R - Hostile Takeover

  • Cooldown: 100s / 90s / 80s ⇒ 15s / 130s / 110s (removed Arena Mod)

Renekton 

W - Ruthless Predator

  • Cooldown: 18 / 16 / 14 / 12 / 10s ⇒ 16 / 14 / 12 / 10 / 8s (removed Arena Mod)

Senna 

Q - Piercing Darkness

  • Damage Bonus Attack Damage Ratio: 60% ⇒ 75%

Tahm Kench 

W - Abyssal Dive

  • Cooldown: 21 / 20 / 19 / 18 / 17s ⇒ 16 / 15 / 14 / 13 / 12s

E - Thick Skin

  • Out of Combat Timer: 3s ⇒ 2s

Teemo 

Q - Blinding Dart

  • Base Damage: 70 / 110 / 150 / 190 / 230 ⇒ 80 / 125 / 170 / 215 / 260 (removed Arena Mod)

Vel'Koz 

R - Life Form Disintegration Ray

  • Cooldown: 80s / 70s / 60s ⇒ 100s / 90s / 80s (removed Arena Mod)

Zaahen 

Q - The Darkin Glaive

  • Bonus Attack Damage Ratio: 10% / 20% / 30% / 40% / 50% ⇒ 10% / 17.5% / 25% / 32.5% / 40%

Zilean 

R - Chronoshift

  • Cooldown: 120s / 90s / 60s ⇒ 150s / 120s / 90s

Items

Ardent Censer

  • Heal and Shield Power: 12% ⇒ 10% (removed Arena Mod)

Lord Dominik's Regards

  • Attack Damage: 30 ⇒ 45

Mortal Reminder

  • Attack Damage: 30 ⇒ 40

Redemption

  • Heal and Shield Power: 12% ⇒ 10% (removed Arena Mod)

Serylda's Grudge

  • Slow Threshold: 50% ⇒ 60%
  • Armor Penetration: 40% ⇒ 45%

Spectral Cutlass

  • Bug Fix: Fixed a bug where this was giving twice as much Lethality.

Staff of Flowing Water

  • Heal and Shield Power: 14% ⇒ 10% (removed Arena Mod)

Sword of Blossoming Dawn

  • Ability Power Ratio: 7% ⇒ 10%

Augments

Serve Beyond Death

  • Duration: 3s / 6s ⇒ 4s / 8s

ARAM: Mayhem Tier List

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