By GamGem ResearchLast updated 18 Oct 2026
the Mouth of the Abyss
Patch 26.20 · Stats from the 26.18 Master+ sample (2,429 games).
Kog'Maw, the Mouth of the Abyss, adds a share of the target's maximum health to every attack while Bio-Arcane Barrage is up, and explodes four seconds after dying. Master+ players took him bot more than Mid; the most common path is ability power from Dusk and Dawn, the other on-hit from Guinsoo's Rageblade. In the bot lane Zeri, Draven and Jinx beat him most often. He got the upper hand on Ezreal and Yunara.
MarksmanMage
Patch 26.18 · Bot · Ranked Solo/Duo · Master+ · EUW · KR · NA · 2,429 games · Preview sample
2,429
Games
High
Confidence
Win rate by lane
59.0%Win Rate
Flash
Ghost52.2%Win Rate
Flash
Barrier
This exact page: taken in 12.0% of games·52.4% win rate over 292 games.
Dealing 25% of a champion's maximum health grants a burst of MS and Slow Resist.
Hitting an enemy champion with an ability permanently increases your maximum mana by 25, up to 250 mana. After reaching 250 bonus mana, restore 1% of your missing mana every 5 seconds.
While above 70% health, gain extra adaptive damage.
Gain increasing amounts of AD or AP, adaptive over the course of the game.
Restore a small amount of mana or energy when damaging an enemy champion. Takedowns restore mana or energy.
Deal more damage to high health enemy champions.
Stormraider's Surge28.3% taken · 52.1% win687 games
Press the Attack16.1% taken · 48.2% win390 games
Arcane Comet11.7% taken · 50.5% win283 gamesSorcery + Precision37.7% taken · 51.6% win915 games
Precision + Inspiration20.1% taken · 48.6% win488 games
Precision + Resolve19.2% taken · 46.9% win467 gamesWhich ability to max first, and the level each point goes in — Kog'Maw's most common path.
QKog'Maw launches a corrosive projectile which deals magic damage and corrodes the target's armor and magic resist for a short time.
Cooldown 7s · 40 Mana
WKog'Maw's attacks gain range and deal a percent of the target's maximum health as magic damage %i:OnHit% On-Hit.
Cooldown 17s · 40 Mana
EKog'Maw launches a peculiar ooze which damages all enemies it passes through and leaves a trail which slows enemies who stand on it.
Cooldown 12s · 40/55/70/85/100 Mana
RKog'Maw fires an artillery shell at a great distance dealing magic damage (increased significantly on low health enemies) and revealing non-stealthed targets.
Cooldown 2/1.5/1s · 40 ManaMax W first, then Q, then E. Take R whenever available (6 / 11 / 16).
| Ability | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| QCaustic Spittle | Q | Q | Q | Q | Q | |||||||||||||
| WBio-Arcane Barrage | W | W | W | W | W | |||||||||||||
| EVoid Ooze | E | E | E | E | E | |||||||||||||
| RLiving Artillery | R | R | R |
How Kog'Maw performs against enemy bot laners
Recommended items by enemy team composition
Kog'MawBot average
102030
102030
102030
Close the gap early — it wins at range and at three items — neither before ten minutes
Dodge the primary — its rotation is one skillshot; sidestep it and the rest is chip
Punish the cooldown — Kog'Maw is exposed while its rotation is down
Ward the flank — vision is what turns its best opening into a worse one
Respect the spike — Riot rates the kit 6/10, so a practised player gets more out of it than the average
PIcathian Surprise
4 seconds after dying, Kogmaw explodes, dealing true damage to surrounding enemies.
Passive — never cast
QCaustic Spittle
Kog'Maw launches a corrosive projectile which deals magic damage and corrodes the target's armor and magic resist for a short time. Kog'Maw also gains additional attack speed.
Cost 40 ManaCooldown 7sRange 1175
WBio-Arcane Barrage
Kog'Maw's attacks gain range and deal a percent of the target's maximum health as magic damage %i:OnHit% On-Hit.
Cost 40 ManaCooldown 17sRange 530
EVoid Ooze
Kog'Maw launches a peculiar ooze which damages all enemies it passes through and leaves a trail which slows enemies who stand on it.
Cost 40/55/70/85/100 ManaCooldown 12sRange 1200
RLiving Artillery
Kog'Maw fires an artillery shell at a great distance dealing magic damage (increased significantly on low health enemies) and revealing non-stealthed targets. Additionally, multiple Living Artilleries in a short period of time cause them to cost additional Mana.
Cost 40 ManaCooldown 2/1.5/1sRange 1300/1550/1800
Riot's notes from patch 25.S1.1 to 26.20 change Kog'Maw in 3 patches. The latest is patch 25.21, published 2025-10-21.
QCaustic Spittle
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.
QCaustic Spittle
Seasons ago, The Mouth of the Abyss was once a viable and common mid lane poke champion who had a late-game powerhouse identity. He's not too far off from it these days, so we're looking to give him a bit of power to enable it again and get people to try it out without making bot lane shift to AP for trivial wave clear.
QCaustic Spittle
Kog'Maw normally sits at pretty high win rates due to being easy to play and always having room for counterplay. However, he's winning a little bit more than is fair right now, so we're delivering a small tap down. We're just taking away some damage that he shouldn't really miss, as we'd like to preserve his rapid-fire spitballs as best-in-class. That said, AP Kog is getting some compensation for this nerf as it's not very strong right now and could use the help.
Riot's data lists 17 looks for Kog'Maw with their own art, the base skin included and 50 chroma variants.
Best ARAM build
This champion’s win rate on each patch the preview sample spans, over its own games there. What actually changed each patch is in Riot’s own notes.
| Stat | Kog'Maw | Rank | Median |
|---|---|---|---|
| Base health | 635 | 60th | 620 |
| Health per level | 99 | =126th | 104 |
| Base armor | 24 | =130th | 30 |
| Armor per level | 4.45 | =112th | 4.6 |
| Base magic resist | 33 | =4th | 32 |
| Magic resist per level | 1.1 | =145th | 1.55 |
| Base attack damage | 61 | =63rd | 59 |
| Base attack speed | 0.665 | =50th | 0.656 |
| Attack speed per level | 2.65% | 72nd | 2.5% |
| Move speed | 330 | =117th | 335 |
| Attack range | 500 | =64th | 175 |
| Stat | Level 1 | Per level | Level 18 | Rank at 18 |
|---|---|---|---|---|
| Health | 635 | +99 | 2318 | =125th of 173 |
| Mana | 325 | +40 | 1005 | =92nd of 145 |
| Armor | 24 | +4.45 | 99.65 | 130th of 173 |
| Magic resist | 33 | +1.1 | 51.7 | =141st of 173 |
Riot Data Dragon 16.20.1. Growth curve: League of Legends Wiki — Champion statistic.
Kog'Maw, the Mouth of the Abyss, is a Marksman and Mage champion in League of Legends. Riot rates the kit 6/10 for difficulty, 8/10 for attack, 2/10 for defense and 5/10 for magic. Kog'Maw spends Mana and has 17 skins with their own art.
Belched forth from a rotting Void incursion deep in the wastelands of Icathia, Kog'Maw is an inquisitive yet putrid creature with a caustic, gaping mouth. This particular Void-spawn needs to gnaw and drool on anything within reach to truly understand it. Though not inherently evil, Kog'Maw's beguiling naiveté is dangerous, as it often precedes a feeding frenzy—not for sustenance, but to satisfy its unending curiosity.
Published by League of Legends on YouTube, 24 June 2010.
16 years old. League of Legends has been patched since, so watch it for how the kit plays, not for numbers — the rest of this page is written for the current patch.
It plays in YouTube’s own player once you press play. Nothing is downloaded or re-hosted here, and nothing loads from YouTube until then.
