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Kog'Maw League of Legends Patch HistoryPC

Kog'Maw

Marksman / Mage

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Kog'Maw was last adjusted in Patch 26.10 (). Across 84 patches, Kog'Maw has received 20 buffs, 16 nerfs, 47 adjustments since release in Patch 1.0.0.94.

Abilities
Icathian SurprisePC
Passive - Icathian Surprise
Effect Radius: 400

Innate: Upon taking death, Kog'Maw enters a zombie state for 4 seconds, becoming ghosted and gaining 10% bonus movement speed that increases up to 50% over the duration. At the end of the duration, he explodes to deal 140 - 710 (based on level) true damage to nearby enemies.

While under this state, Kog'Maw becomes invulnerability, untargetable, and cc-immune, but is also rendered unable to declare basic attacks, cast abilities, use summoner spells, and activate items.

Caustic SpittlePC
Q - Caustic Spittle
Cost: 40 Mana
CD: 7
Cast Time: Basic attack timer
Range: 1200

Passive: Kog'Maw gains bonus attack speed.

Bonus Attack Speed: 5 / 10 / 15 / 20 / 25%
Magic Damage: 80 / 125 / 170 / 215 / 260 (+ 90% AP)
Resistances Reduction: 16 / 20 / 24 / 28 / 32%

Active: Kog'Maw ejects a wad of spittle in the target direction that deals magic damage to the first enemy hit and reduces their armor and magic resistance for 4 seconds.

Bio-Arcane BarragePC
W - Bio-Arcane Barrage
Cost: 40 Mana
CD: 17
Cast Time: None

Active: Kog'Maw empowers his basic attacks for the next 8 seconds to gain bonus attack range and deal bonus magic damage on-hit, capped at 100 against minion and monster.

Bonus Attack Range: 130 / 150 / 170 / 190 / 210
Bonus Magic Damage: 3 / 3.75 / 4.5 / 5.25 / 6% (+ 1.5% per 100 AP) of target's maximum health
Void OozePC
E - Void Ooze
Cost: 40 / 55 / 70 / 85 / 100 Mana
CD: 12
Cast Time: 0.25
Range: 1360

Active: Kog'Maw spews a gob of ooze in the target direction that deals magic damage to enemies hit.

Magic Damage: 70 / 110 / 150 / 190 / 230 (+ 65% AP)
Slow: 40 / 45 / 50 / 55 / 60%

A field of ooze is created in its wake for 3 seconds, slow enemies within the area every 0.25 seconds.

Living ArtilleryPC
R - Living Artillery
Cost: 40 - 400 (based on level) Mana
CD: 2 / 1.5 / 1
Cast Time: 0.25
Range: 1300 / 1550 / 1800
Effect Radius: 240

Active: Kog'Maw spits a globule of acid into the air that drops to the target location after 0.6 seconds, granting sight of the area before dealing magic damage to enemies hit and standard sight them for 2 seconds. Living Artillery's damage is increased by 0% - 50% (based on level) , or instead by 100% if the target is below 40% maximum health.

Minimum Magic Damage: 100 / 140 / 180 (+ 75% bonus AD) (+ 35 / 40 / 45% AP)
Maximum Magic Damage: 200 / 280 / 360 (+ 150% bonus AD) (+ 70 / 80 / 90% AP)

Kog'Maw then gains a stack of Living Artillery for 8 seconds, refreshing on subsequent casts and stacking up to 9 times.

Living Artillery: For each stack, Living Artillery's mana cost is increased by 40 .

Base Stats

Health: 635
Health Per Level: 99
Mana: 325
Mana Per Level: 40
Attack Damage: 61
AD Per Level: 3.1
Attack Speed: 0.665
AS Per Level: 2.65
Armor: 24
Armor Per Level: 4.45
Magic Resist: 30
MR Per Level: 1.3
Movement Speed: 330
Range: 500
Health Regen: 3.75
HP Regen Per Level: 0.55
Mana Regen: 8.75
Mana Regen Per Level: 0.7
Patch 26.10changeCurrent Patch

Bio-Arcane Barrage

  • Bug Fix: Fixed a bug where it wouldn't always trigger Statikk Shiv.
Patch 26.9change

Bio-Arcane Barrage

  • Bug Fix: Fixed bugs that caused it to not work properly as typical on-hit effects.
Patch 25.21nerf

Kog'Maw is one of the winningest bot laners in the game and has also lost his old identity as a scaler. We're delivering a targeted nerf toward his early trading in order to re-balance him and retain some of that scaling potential.

Caustic Spittle

  • Bonus attack speed reduced to 5/10/15/20/25% from 10/15/20/25/30%.
Patch 25.18buff

AP Kog'Maw has always been an off build, but is a little less viable than we think makes sense for Arena's build philosophies.

General

  • R AP ratio increased: 55% → 55%/60%/65%

Guest of Honor (Arena)

  • Landing time reduced from 2s → 1.5s
  • Now grants 1 additional revive in addition to its previous effects.
  • Cocoon size increased.
  • Duration increased from 10 → 28s (just before the Ring of Fire spawns.)
  • The Ring of Fire moves slightly faster over a greater distance.
  • Trigger condition changed from the 1st hit → 1st time you drop an opponent to below 50% HP.
  • Grants +1 Reroll every 3 rounds in addition to its previous effects.

Items (Arena)

  • Isolation Range: 1000 → 1500
  • Attack Damage: 30 → 40
  • Third Hit Increase based on missing Health: 50% → 75%
  • Attacks: 3 → 5
  • Damage: 60(+0.15AP)(+0.33bAD) → 80(+0.45AP)(+0.66bAD)
  • Duration: 8s → 10s
  • Range: 500 → 1500
  • Bonus HP scaling: 4% bonus → 5% bonus
  • Bonus HP scaling: 4% bonus → 5% bonus
  • Cooldown: 8s → 6s
  • Mana shield: 4.5% → 10%
  • Current HP damage: 10% → 20%
  • Omnivamp: 10%/6% → 15%/8%
  • Movement Speed: 15% → 20%
  • Attack Speed: 30% → 50%
  • Attack Damage: 55 → 70
  • Health: 200 → 350
  • Ability Power: 80 → 90
  • Damage Amp: Removed
  • Maximum stacks: 6 → 4
  • MR shred per stack: 5% → 7.5%
  • Shield Type: Current → Max
  • Shield Strength: 25% → 20%
  • Ability Power: 80 → 90
  • Gold Reward: 125g → Removed
  • Squall Damage: 180(+0.1AP) → 180(+0.3AP)

Augments (Arena)

  • Fleet Footwork Healing: 10-100 → 20 - 150
  • Grasp Heal: 1.2% → 5%
  • Damage: 40-200 → 40-200(+3% max HP)
  • Static Ratio: 0.625 → 1
  • Stun: 0.6s → 1s
  • Cooldown: 30 → 20
  • Prismatic Anvil Reduction: 1000 → 1500
  • Stat Anvil reduction: 100 → 250
  • Min shield reduced from 50-200 → 25-200 per level
  • Max shield reduced from 200-500 → 100-400 per level

Stat Anvils (Arena)

  • Now has a Melee / Ranged split
  • Melee: 25% Omnivamp
  • Ranged: 12.5% Omnivamp
  • Silver Magic Pen: 10 → 8
  • Gold Magic Pen: 22 → 18

Arena Bugfixes

  • Fixed an issue where the Madhatter hat (the kind you'd expect from a long-winded owner of a certain domed establishment) was missing when a player reconnects.
  • Fixed an issue where the Madhatter hat was reduced more than expected after each round loss.
  • Put in a minimum champion size as a failsafe in case a player gets too many size reduction effects.
  • Fixed an issue where Darius was not healing/granting gold on team eliminations.
Patch 25.17buff

Q damage increased. W damage increased. R damage increased at higher ranks.

Caustic Spittle

  • AP ratio increased to 90% AP from 80% AP.

Bio-Arcane Barrage

  • AP ratio increased to 1.5% per 100 AP from 1% per 100 AP.

Living Artillery

  • Minimum AP ratio increased to 35/40/45% AP from 35% AP at all ranks.
Patch 25.4change

Q damage decreased, AP ratio increased.

Caustic Spittle

  • Base damage reduced to 80/125/170/215/260 from 90/140/190/240/290.
  • AP ratio increased to 80% AP from 70% AP.
Patch 14.23nerf

Q resistances shred adjusted. E damage decreased.

Caustic Spittle

  • Resistances reduction changed to 16/20/24/28/32% from 23/25/27/29/31%.

Void Ooze

  • Base damage reduced to 70/110/150/190/230 from 75/120/165/210/255.
  • AP ratio reduced to 65% AP from 70% AP.
Patch 14.14change

Icathian Surprise

  • Bug Fix: Is no longer sometimes unable to issue movement commands after the zombie state has expired.
Patch 14.13change

Icathian Surprise

  • Bug Fix: Corpse is no longer sometimes a valid movement collision target.
Patch 14.7change

Void Ooze

  • Bug Fix: Tooltip now notes the correct slow amount due to 14.5 changes.
Patch 14.5buff

Passive bonus movement speed increased. Q cast time adjusted. E slow increased. R damage increased.

Icathian Surprise

  • New Effect: Now gains 10% bonus movement speed upon activation.
  • Maximum bonus movement speed increased to 50% from 40%.

Caustic Spittle

  • Cast time changed to basic attack windup time from 0.25 seconds.

Void Ooze

  • Slow increased to 40/45/50/55/60% from 30/35/40/45/50%

Living Artillery

  • AD ratio increased to 75% bonus AD from 65%.
Patch 14.2buff

Bio-Arcane Barrage

  • New Effect: Now displays an attack range indicator while active.
Patch 14.1change

Bio-Arcane Barrage

  • Bug Fix: No longer always cancels an ongoing basic attack windup when the buff ends.
Patch 13.18nerf

Icathian Surprise

  • Bug Fix: Character swap to the exploded Kog'Maw model is no longer partially overriding his champion statistics.
  • No longer shows as having the maximum amount of attack speed while a corpse.
Patch 13.12nerf

W base damage decreased.

Bio-Arcane Barrage

  • Base damage reduced to 3/3.75/4.5/5.25/6% of target's maximum health from 3.5/4.25/5/5.75/6.5%.

Lion Dance

  • Living Artillery
  • Bug Fix: Restored vertical cast indicator.
Patch 13.8buff

Passive true damage increased, Kog’Maw now ghosted while in passive. Q cooldown decreased. E mana cost decreased, slow increased.

Icathian Surprise

  • Base damage increased to 140 to 650 (based on level) from 125 to 550 (based on level).
  • New Effect: Now grants ghosting while active.

Caustic Spittle

  • Cooldown reduced to 7 seconds from 8.

Void Ooze

  • Mana cost reduced to 40/55/70/85/100 from 60/70/80/90/100.
  • Slow changed to 30/35/40/45/50% from 20/28/36/44/52%.
Patch 13.3change

Icathian Surprise

  • Bug Fix: The exploded corpse that Kog'Maw turns into after the effect ends no longer displays -5 base movement speed.
  • This change was applied on patch V13.1b already.
Patch 13.1bchange

Icathian Surprise

  • Undocumented / Bug Fix: The exploded corpse that Kog'Maw turns into after the effect ends no longer displays -5 base movement speed.
Patch 12.22nerf

Stats

  • Attack damage growth reduced to 3.1 from 3.11.
Patch 12.12change

Icathian Surprise

  • Bug Fix: Corpse is no longer an obstacle to other units' pathing.
Patch 12.11nerf

Q armor and MR shred decreased, passive attack speed decreased. W percent max health damage on-hit decreased.

Caustic Spittle

  • Resistance reduction reduced to 23/25/27/29/31% from 25/27/29/31/33%.
  • Bonus attack speed reduced to 10/15/20/25/30% from 15/20/25/30/35%.

Bio-Arcane Barrage

  • Base damage reduced to 3/3.8/4.6/5.2/6% of target's maximum health from 3/4/5/6/7%.
Patch 12.10buff

Stats

  • Base health increased to 635 from 565.
  • Health growth increased to 99 from 85.
  • Armor growth increased to 4.45 from 3.25.
  • Magic resistance growth increased to 1.3 from 0.5.

Icathian Surprise

  • Bug Fix: No longer triggers his own Immortal Shieldbow passive.
Patch 12.9change

Icathian Surprise

  • Bug Fix: Turrets no longer prioritize and target enemies damaged by it.
Patch 12.8change

Icathian Surprise

  • Bug Fix: Enemy champions that deal lethal damage to trigger the zombie state are no longer considered to deal damage to the source when the effect ends.
Patch 12.2change

Icathian Surprise

  • Bug Fix: Fixed a bug where towers would incorrectly target enemy champions who took damage from it.
Patch 11.18buff

E AP scaling increased.

Void Ooze

  • AP ratio increased to 70% AP from 50% AP.
Patch 11.10change

General

  • Updated base texture.
  • Updated visual effects.
  • New basic attack missiles and hit effects.

Icathian Surprise

  • Reduced noise and improved clarity with regards to the size of the explosion.

Caustic Spittle

  • New hit effects and a new missile to better represent its actual hitbox.

Bio-Arcane Barrage

  • New effects to make him more representative of the Void.

Void Ooze

  • New hit effects and a new missile to better represent its actual hitbox.

Living Artillery

  • New effects that better represent the hitbox.

Reindeer, Deep Sea, and Jurassic

  • Added new recolors to all VFX.

Lion Dance

  • Caustic Spittle
  • New unique VFX.
  • Void Ooze
  • Updated VFX.
  • Living Artillery
  • Updated VFX.
Patch 11.9buff

Q resistances reduction increased. E cost decreased.

Icathian Surprise

  • Bug Fix: VO has been restored and is playing once again on all skins.

Caustic Spittle

  • Resistance reduction increased to 25/27/29/31/33% from 20/22/24/26/28%.

Void Ooze

  • Mana cost reduced to 60/70/80/90/100 from 80/90/100/110/120.
Patch 11.5buff

W bonus damage increased later.

Bio-Arcane Barrage

  • Bonus magic damage health ratio increased to 3/4/5/6/7% of target's maximum health from 3/3.75/4.5/5.25/6%.
  • Undocumented / Removed: Empowered attacks no longer grant Mana Charge stacks (Tear of the Goddess).
Patch 10.18nerf

Stats

  • Health growth reduced to 85 from 90.
  • Armor growth reduced to 3.25 from 3.5.
Patch 10.15change

Arcanist

  • Void Ooze
  • Bug Fix: VFX now aligns with when it actually deals damage to the enemy units.
Patch 10.13buff

Caustic Spittle

  • AP ratio increased to 70% AP from 50% AP.

Living Artillery

  • AP ratio increased to 35% AP from 25% AP.
Patch 10.12change

Caustic Spittle

  • Bug Fix: Tooltip no longer mentions rooting for 0.5 seconds.
Patch 10.11buff

Stats

  • Base health increased to 565 from 534.
  • Health growth increased to 90 from 88.
Patch 10.1buff

R mana penalty duration now displays on icon.

Living Artillery

  • New Effect: Mana debuff duration now displays on the icon's .
Patch 9.21buff

Base stats rounded up. Q and E base damage increased.

Stats

  • Base mana increased to 325 from 322.2.
  • Base mana regeneration increased to 8.75 from 8.676.

Caustic Spittle

  • Base damage increased to 90/140/190/240/290 from 80/130/180/230/280.

Void Ooze

  • Base damage increased to 75/120/165/210/255 from 60/105/150/195/240.
Patch 9.8change

Battlecast

  • Bug Fix: Fixed a bug where Blinding Dart did not correctly display on this skin.
Patch 9.1buff

Living Artillery

  • New Effect: Can now ping the time until stacks expire if Kog'Maw is unable to cast Living Artillery due to having too many stacks.
Patch 8.24change

Pug'Maw

  • Void Ooze
  • Bug Fix: Restored self and ally view bubble VFX and enemy view bubbles are now more red.
Patch 8.19buff

Stats

  • Base movement speed increased to 330 from 325.

Living Artillery

  • Target range increased to 1300/1550/1800 from 1200/1500/1800.
Patch 8.14change

General

  • Updated mixing and mastering for current SFX.
Patch 8.11change

Stats

  • Base health increased to 534 from 517.76.
  • Health growth increased to 88 from 82.
  • Base armor reduced to 24 from 29.
  • Base health regeneration reduced to 3.75 from 6.
  • Base attack damage reduced to 61 from 65.
  • Attack damage growth increased to 3.11 from 2.41.
Patch 8.4buff

Bio-Arcane Barrage

  • Bonus magic damage maximum health ratio increased to 3/3.75/4.5/5.25/6% of target's maximum health from 3/3.5/4/4.5/5%.
Patch 8.3change

Stats

  • Base health regeneration increased to 6 from 5.924.

Bio-Arcane Barrage

  • Bonus magic damage maximum health ratio reduced to 3/3.5/4/4.5/5% of target's maximum health from 3/4/5/6/7%.
Patch 8.1change

Hextech

  • Void Ooze
  • Bug Fix: VFX around the spit blob projectile no longer disappear beneath elevated terrain.
Patch 7.23change

Living Artillery

  • Bug Fix: Warning indicator VFX can once again be seen from self/ally view in Medium, Low, and Very Low graphics settings.
Patch 7.14change

Reindeer

  • Bug Fix: Vintage loading screen now properly displays for original owners of the skin.
Patch 6.24change

Bio-Arcane Barrage

  • Maximum health bonus damage increased to 3/4/5/6/7% from 2/3/4/5/6%.

Void Ooze

  • Base damage reduced to 60/105/150/195/240 from 60/110/160/210/260.
  • AP ratio reduced to 50% AP from 70% AP.
Patch 6.21buff

Living Artillery

  • Initial and stacking mana cost reduced to 40 from 50.
  • Maximum mana cost reduced to 400 from 500.
  • Increased cost debuff duration reduced to 8 seconds from 10.
  • Base damage increased to 100/140/180 from 70/110/150.
  • New Effect: Deals 0.83% increased damage for every 1% of target's missing health, up to 50% bonus damage (versus targets above 40% of their maximum health).
  • Maximum damage implemented at 150/210/270 (+ 97.5% bonus AD) (+ 37.5% AP).
  • Threshold to deal double damage changed to below 40% health from below 50% health. Target's below the above threshold take double damage instead of the previous modifier.
  • Base double damage increased to 200/280/360 from 140/220/300.
  • Removed: Triple damage below 25% health, previously 240/330/540 (+ 195% bonus AD) (+ 75% AP).
Patch 6.20change

Bio-Arcane Barrage

  • Made Bio-Arcane Barrage's attack animation cool again.
  • Updated Lion Dance Kog'Maw's hit particles for even more fireworks.
  • Updated Bio-Arcane Barrage's visual effects across skins to match the new duration.
Patch 6.19change

Stats

  • Base attack speed increased to 0.665 from 0.625.
  • Attack speed growth reduced to 2.65% from 3.5%.

Caustic Spittle

  • New Effect: Now grants 15/20/25/30/35% bonus attack speed.

Bio-Arcane Barrage

  • Removed: Bonus attack speed, maximum attack speed and reduced cast time.
  • Removed: Basic attacks dealing 55% AD to non-minions.
  • Bonus magic damage changed to 2/3/4/5/6% (+ 1% per 100 AP) of target's maximum health from 4/8/12/16/20 (+ 2% (+ 0.75% per 100 AP) of target's maximum health).
  • Bonus range increased to 130/150/170/190/210 from 90/120/150/180/210.
  • Cooldown increased to 17 seconds at all ranks from 13/11.5/10/8.5/7.
  • Duration increased to 8 seconds from 6.
  • New effect: Cooldown now starts on-cast instead of at the end of buff duration.
Patch 6.8change

Caustic Spittle

  • Resistance reduction increased to 20/22/24/26/28% from 12/16/20/24/28%.

Bio-Arcane Barrage

  • Base damage reduced to 4/8/12/16/20 from 10/15/20/25/30.
Patch 6.5change

General

  • Attack speed growth increased to 3.5% from 1.5%.

Caustic Spittle

  • Mana cost reduced to 40 from 60.

Bio-Arcane Barrage

  • Removed: Passive attack speed.
  • Removed: Minimum damage threshold.
  • New Effect: Bonus damage has a base value of 5/10/15/20/25. Percentage health component unchanged.
  • Bug Fix: On-hit effects dealt significantly reduced damage while Bio-Arcane Barrage was active.
Patch 6.4nerf

Stats

  • Base attack speed reduced to 0.625 from 0.665.

Bio-Arcane Barrage

  • Bonus damage cap against non-champions reduced to 60 from 100.
Patch 6.3change

Caustic Spittle

  • Removed: Passive component. Reintegrated into Bio-Arcane Barrage.

Bio-Arcane Barrage

  • New Effect: Passively grants 15/20/25/30/35% attack speed.
  • New Effect: The base magic damage has a minimum damage threshold of 15.
Patch 5.24change

Bio-Arcane Barrage

  • Removed: AD ratio as base damage.
  • New Effect: Now has a base damage of 2% of target's max. health.
Patch 4.14nerf

Stats

  • Base movement speed reduced to 325 from 330.

Void Ooze

  • New particles effects.

Living Artillery

  • Bonus base magic damage to champions reduced to 100% from 125%.
Patch 4.13change

Stats

  • Base health reduced to 400 from 440.
  • Health growth increased to 87 from 84.

Caustic Spittle

  • Armor and magic resistance shred reduced to 12/16/20/24/28% from 20/22/24/26/28%.
Patch 4.7change

Living Artillery

  • The current cost is displayed on the icon, similar to Riftwalk.
  • Fixed a bug where the tooltip was showing range of 1400 / 1700 / 2000 instead of the actual range of 1200 / 1500 / 1800.
Patch 4.4buff

Caustic Spittle

  • Targeting changed to a linear skill shot from a targeted ability.
  • Range increased to 925 from 625.
  • Damage changed to 80 / 130 / 180 / 230 / 280 (+50% AP) from 60 / 110 / 160 / 210 / 260 (+70% AP).
  • Shred increased to 20 / 22 / 24 / 26 / 28% from 5 / 10 / 15 / 20 / 25 flat.
  • Mana cost increased to 60 from 50.

Bio-Arcane Barrage

  • Mana cost reduced to 0 from 50.
Patch 3.8change

Void Ooze

  • Bug Fix: Fixed a bug where the slow wasn't reduced by Tenacity / Boots of Swiftness.
  • New Effect: Missile now applies a 1-second slow to targets struck, refreshing every .25 seconds.
Patch 1.0.0.142change

General

  • Updated tooltips.

Living Artillery

  • Maximum stack count increased to 10 from 5.
  • Max mana cost increased to 400 from 200.
Patch 1.0.0.140bnerf

Living Artillery

  • Damage bonus to champions reduced to 125% from 150%.
Patch 1.0.0.139nerf

Void Ooze

  • Slow amount reduced to 20/28/36/44/52% from 28/36/44/52/60%.
Patch 1.0.0.138change

Icathian Surprise

  • Kog'Maw no longer regenerates health while active.
Patch 1.0.0.130change

Icathian Surprise

  • Fixed a bug where if you killed an enemy that exploded using Icathian Surprise, the enemy was awarded an extra kill.
  • Fixed a bug where Pyroclasm would give him an extra kill if it was traveling toward Kog'Maw when Icathian Surprise triggered.
  • Fixed a bug where if Ignite killed Kog'Maw, it would cause it to not trigger.
  • Fixed a bug where Silver Bolts sometimes caused it to not trigger.
Patch 1.0.0.129nerf

Bio-Arcane Barrage

  • Bonus range reduced to 130/150/170/190/210 from 130/160/190/220/250.
Patch 1.0.0.127nerf

Bio-Arcane Barrage

  • Duration reduced to 8 seconds from 10.
Patch 1.0.0.123change

Living Artillery

  • Updated reveal particle effect.
Patch 1.0.0.121change

General

  • Updated autoattack animation to be more responsive.

Caustic Spittle

  • Updated animation to be more responsive.

Bio-Arcane Barrage :

  • Updated animation to be more responsive.
  • Duration increased to 10 seconds from 6.
  • Cooldown increased to 17 from 15.

Living Artillery

  • Projectile drop time reduced slightly to improve consistency.

Void Ooze

  • Fixed a bug where it was not flagged as an area-of-effect spell.
Patch 1.0.0.118bbuff

General

  • Updated recommended items.

Caustic Spittle

  • Range increased to 625 from 600.
  • Now reduces both magic resist and armor instead of just armor.

Bio-Arcane Barrage

  • Cooldown decreased to 15 seconds from 17.

Void Ooze

  • Width increased slightly.

Living Artillery

  • Now also scales with 50% of Kog'Maw's bonus attack damage in addition to ability power.
Patch 1.0.0.116change

General

  • Champion square background darkened.
Patch 1.0.0.115change

Void Ooze

  • Fixed a bug where the ball from it counted as individual unit and could break things like Noxious Trap, block skillshots, etc.
Patch 1.0.0.111change

Bio-Arcane Barrage

  • Fixed a display bug with its attacks on several skins.
Patch 1.0.0.106nerf

Stats

  • Base movement speed reduced to 305 from 310.
Patch 1.0.0.105change

Bio-Arcane Barrage

  • Fixed a bug where it was doing more damage than intended.
  • Fixed a bug where it was dealing physical damage instead of magic damage.
Patch 1.0.0.103change

Icathian Surprise

  • Fixed several bugs with it to be more consistent.
Patch 1.0.0.102nerf

Bio-Arcane Barrage

  • Cooldown increased to 17 from 15.
Patch 1.0.0.101change

Caustic Spittle

  • Fixed a bug where it was giving multiplicative attack speed rather than base.
Patch 1.0.0.100nerf

Living Artillery

  • Now correctly states that the increased cost per stack is 40.
Patch 1.0.0.99buff

Caustic Spittle Remade

  • Passive: it now increases attack speed by 10/15/20/25/30% instead of giving 13/16/19/22/26% armor penetration.
  • Active: the projectile now reduces the target's armor by 5/10/15/20/25 for 4 seconds, instead of doubling Kog'Maw's previous passive armor penetration.

Bio-Arcane Barrage

  • Cooldown reduced to 15 from 20.

Void Ooze

  • Cooldown reduced to 12 from 13.
Patch 1.0.0.97change

Stats

  • Base attack range increased to 500 from 450.

Caustic Spittle

  • Range increased to 625 from 600.

Bio-Arcane Barrage

  • Bonus range reduced to 130/160/190/220/250 from 140/180/220/260/300.
Patch 1.0.0.96change

General

  • Fixed a bug where Chronoshift would not prevent Kog'Maw from dying.
Patch 1.0.0.94new

Kog'Maw added to League of Legends

Icathian Surprise (Innate)

  • Upon dying, Kog'Maw starts a chain reaction in his body which causes him to detonate after 4 seconds; dealing magic damage to surrounding enemies.

Bio-Arcane Barrage (Q)

  • Kog'Maw's attacks gain range and deal a percent of the target's maximum health as magic damage.

Void Ooze (W)

  • Kog'Maw launches a peculiar ooze which damages all enemies it passes through and leaves a trail which slows enemies who stand on it.

Caustic Spittle (E)

  • Passive: Increases armor penetration.
  • Active: Kog'Maw launches a corrosive projectile which deals magic damage and doubles his passive armor penetration for 4 seconds (Removes the passive until available again).

Living Artillery (Ultimate)

  • Kog'Maw fires a living artillery shell at a great distance dealing damage and revealing targets. Additionally, multiple Living Artilleries in a short period of time cause them to cost additional mana.