By GamGem ResearchLast updated 20 Aug 2026 · 00:00
Kog'Maw
the Mouth of the Abyss
MarksmanMage
League of LegendsPatch 26.16BotRanked Solo/DuoEmerald+NA13,833 gamesSample data
Role snapshot (Bot)
- 52.4%
- Win Rate
- 2.7%
- Pick Rate
- 25.3%
- Ban Rate
13,833
Games
Moderate
Confidence
Matchup map (Bot) — level 1–18
Conditional build matrix
| vs AP Burst | vs AD Assassins | vs Tanks | vs Sustain | |
|---|---|---|---|---|
| Mythic / Core |   |   |   |   |
| Core 2 |   |   |   |   |
| Core 3 |   |   |  |   |
| Boots |  |  |  | |
| Situational |   |   |  |   |
Popular build
6,363 games52.8%Win Rate
Flash
IgniteReliable build
4,565 games51.5%Win Rate
Flash
TeleportHigh observed win rate
1,660 games54.9%Win Rate
Flash
ExhaustRunes
Primary: Resolve
Aftershock
Shield Bash
Second Wind
Overgrowth
Secondary: Sorcery
Nimbus Cloak
Transcendence
Shards
+9 Adaptive Force
+9 Adaptive Force
+10-180 Health (based on level)
Skill order
| Q | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| E | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| R | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
Ability details
Icathian Surprise
4 seconds after dying, Kogmaw explodes, dealing true damage to surrounding enemies.
Passive — never cast
Caustic 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
Bio-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
Void 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
Living 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
Scaling — level 1–18
Kog'MawBot average
1918
1918
1918
Counter plan — how to beat Kog'Maw
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
ARAM performance
- 53.5%
- Win Rate ▲ 0.1%
- 2.5%
- Pick Rate ▲ 5.4%
- 8.2%
- Ban Rate ▲ 2.9%
- Damage dealt
- 109.9%
- Damage taken
- 97.7%
- Healing
- 94.8%
- Shielding
- 93.0%
- Ability Haste
- +9
Best ARAM build
Patch timeline
We hold the rates, not the balance log. What actually changed each patch is in Riot’s own notes.
- 26.16Live now+0.6
- 26.14Sample win rate across this patch-0.6
- 26.11Sample win rate across this patch+0.5
- 26.08Sample win rate across this patch-0.2
- 26.05Sample win rate across this patch+0.4
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Methodology
- Data window
- 512,340 games on patch 26.16, Ranked Solo/Duo, NA. Last refreshed 20 Aug 2026.
- Rank aggregation
- Emerald+ and above, pooled. Splitting further leaves samples too small to separate a real effect from noise.
- Role assignment
- A champion is filed under the lanes it actually plays, not the one class it belongs to — which is why several appear in two.
- Counters
- A matchup, not a tier gap: how this champion does into that one specifically, over that pairing’s own games.
- Minimum sample
- The confidence indicator beside every rate is driven by how much of the window this champion appears in. A low reading means read the figure loosely, not that it is wrong.
- Why a build is not a cause
- The best-scoring build is the one the best-placed players happened to take. Correlation is what a rate can show; it is not evidence that buying those items caused the wins.
- Where the numbers come from
- Names, classes, lanes, abilities, items and runes are Riot Data Dragon. Win, pick and ban rates are derived samples — Riot publishes none of them, and nothing on this page presents one as measured.