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ARAM: Mayhem patch 26.20 update

10/7/2026Read the original patch notes โ†—

Patch 26.20 focuses on buffing a bunch of champions to make Mayhem smoother: Bard, Garen, K'Sante, Lee Sin, Swain, and Thresh all got noticeably stronger. On the augment side, Split Rocket got its activation reworked, Juiced changed its formula and lost Absorbed Energy, while Shark Tempest, Squishy Slappy Grab, and Triggered Inferno all got stronger or had their cooldowns reduced. There are also a lot of bugs fixed related to augments and champion abilities, like King Me, Shark Bait, and Spell Split.

Changes at a glance

Augment changes

  • Rework

    Mana Drain removed, damage-to-mana ratio increased, new ranged mod added

    • REMOVEDMana Drain: Removed
    • Damage-to-Mana Ratio: 4.5% 7%
    • NEWRanged Mod: 80% of the 7%
  • Slow resist increased from 40% to 50%

    • Slow Resist: 40% 50%
  • Missile Split
    Rework

    Now splits on end or recast instead of on first hit

    • Split Trigger: On first unit hit On end or recast
  • Slow, area damage and attached damage all increased significantly

    • Slow: 30% for 3s 40% for 3s
    • Base Area of Effect Damage: 50โ€“100 100โ€“200
    • Attached Damage over 3s: 75โ€“225 + 0.6 bonus AD + 0.36 AP 90โ€“270 + 0.75 bonus AD + 0.45 AP
  • Cooldown lowered, damage and shield both increased

    • Cooldown: 35s 30s
    • Damage: 30โ€“100 + 10% bonus Health 50โ€“150 + 15% bonus Health
    • Shield per Target: 35โ€“150 + 50% bonus Armor + 50% bonus Magic Resistance 50โ€“200 + 50% bonus Armor + 50% bonus Magic Resistance
  • Damage now checked before mitigation, making it stronger

    • NEWDamage Check: Pre-mitigation instead of post-mitigation
  • Cooldown cut drastically from 15s to 5s

    • Cooldown: 15s 5s

Champion changes

  • Buff

    Meep is stronger with higher AP ratio, faster recharge and more chime damage

    • Meep Ability Power Ratio: 50% 67%
    • Meep Recharge: 8s 5s
    • Meep Auto Damage per Chime Breakpoint: 6 per 3 chimes 10 per 3 chimes
  • Buff

    Passive regen, W shield and W stacking all increased, W cooldown faster

    • Passive Regen: 1.5%โ€“1.01% 2%โ€“12%
    • W Cooldown: 22โ€“12 18โ€“12
    • W Shield Strength: 18% Bonus Health 20% Bonus Health
    • W Passive Stacks: 0.4 per minion kill 0.75 per minion kill
  • W cools down faster with more damage reduction, E shield increased

    • W Cooldown: 14โ€“10 10
    • W Damage Reduction: 30% 45%
    • E Shield Strength: 13.5% bonus health 15% bonus health
  • Attack speed, energy restore, W shield and Q2 damage all increased

    • Passive Attack Speed: 40% bonus Attack Speed 50% bonus Attack Speed
    • Passive Energy Restore: 20 / 30 / 40 30 / 40 / 50
    • W Shield: 60โ€“240 80โ€“320
    • Q2 Damage: 60โ€“180 80โ€“240
  • Buff

    Takes less damage, heals more, soul fragment restore now scales with level

    • Damage Taken: 105% 100%
    • Healing: 95% 100%
    • Soul Fragments Restore: 6% flat 3%โ€“6% scaling with level
  • Buff

    Drops more souls and W cooldown reduced at all ranks

    • Passive Soul Drop: 2 3
    • W Cooldown: 21 / 20 / 19 / 18 / 17s 19 / 18 / 17 / 16 / 15s

Bug fixes

  • Fixed a bug where Infernal Soul and Jeweled Gauntlet tracked damage dealt to minions.
  • Fixed a bug where King Me persisted in the slot after completing the quest.
  • Fixed a bug where King Me transmute to Overloaded causes Overloaded to be non-functional.
  • Fixed a bug where Shark Bait displayed an empty buff bar.
  • Fixed a bug where Aurora (Q) does not gain ability cooldown from the Skilled Sniper Augment.
  • Fixed a bug where Shen's Echo Cast Shadow Dash (E) fails to Dash when Shen flashed or queued another spell.
  • Fixed a bug where a move command can change Echo Cast's Clone direction.
  • Fixed a bug where Lucian's (W) missile fails to split with Spell Split augment when casting (E) during the spell cast.
  • Fixed a bug where Spell Split missiles do not split when casting a Summoner Spell during the ability's cast time.
  • Fixed a bug where champions are unable to queue other spells when casting an Ability enhanced by the Spell Split Augment.
  • Fixed a bug where Prom Queen's cooldown icon disappears upon death.
  • Fixed a bug where Urgot (W) missile would destroy Rite of Ascension's Soul.
  • Fixed a bug where Minion Mancer's damage amplification did not work on Shaco (R) Explosion and Ivern R's knockup.
  • Fixed a bug where Ultra Hydra's quest and card icon did not match up.

Affected builds

Ornn Fey Magic

One-shot enemies with the ultimate Call of the Forge God and the Fey Magic augment

PEAK augments

Fey Magic
Situational augments:Tooth FairyEureka

Magic Penetration Dr. Mundo

A brand-new, super weird meta for Dr. Mundo

PEAK augments

Tooth FairyGiant SlayerBack To Basics
Situational augments:Trusty Weapon

Karthus Tooth Fairy

Requiem 5 times in a row with Karthus Tooth Fairy

PEAK augments

Tooth FairyJeweled Gauntlet
Situational augments:Wooglet's WitchcapPhenomenal Evil