How to win lane as Kog'Maw against Karthus · 56.29% win rate (421 Emerald+ games, lolalytics, sampled July 2026) · Matchup data reviewed on patch 26.15
He zones the farm your curve needs — R matches his poke, W out-ranges his zone, and your late game embarrasses his.
Track: Karthus's R — Requiem (200–160s cooldown). The global execute — recall above the red line and track it from his level 6 on.
Read from Kog'Maw's seat: which stage windows this plan plays for against Karthus.
This is Kog'Maw's own plan; across 421 pooled games the lane is Kog'Maw-favoured.
| Stage | Favoured | Why |
|---|---|---|
| Level 1 | Karthus | Level 1 is Karthus's: Q Lay Waste pokes and contests CS from range you can't answer. |
| Level 2 | Karthus | Level 2 stays Karthus's as Q poke plus E zoning keep you off the wave. |
| Level 3 | Karthus | Level 3 is Karthus's because Defile zones your immobile body off farm. |
| Levels 4-5 | Karthus | Levels 4-5 remain Karthus's on accumulating Q poke and E pressure. |
| Level 6 | Karthus | Level 6 is Karthus's since Requiem threatens to execute you after any trade. |
| First item | Karthus | First item is Karthus's, one AP item makes his Q poke keep you pinned. |
| Two+ items | Kog'Maw | Two-plus items is Kog'Maw's: uncapped W range and %max-HP shred him from outside Defile. |
Karthus controls levels 1-2. His Q Lay Waste lets him contest CS and poke you at range without ever stepping up, and you're the immobile short-range one who can't punish him for it. Last-hit behind minions, respect that repeated Q hits add up fast, and don't walk into E Defile range for a single caster minion. Take safe farm and scale. He farms from a range you cannot answer, so stop trying and take the CS you can reach without stepping into Defile. Keep the slow for the moment he turns it on. Once Bio-Arcane Barrage is up you out-range his casting entirely, which is the whole reason the early passivity is worth it.
Pooled Emerald+ win rates from Kog'Maw's side, sampled July 2026.
The full Kog'Maw vs Karthus report continues with the mid-game plan, the late-game and teamfight plan, every power spike to play around, and the win conditions for both sides — plus cooldown tracking and the live enemy-jungle tracker inside the app.
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Kog'Maw — a 56.29% win rate vs Karthus in bot lane over 421 games is a real advantage.
Not really — Kog'Maw holds a real statistical advantage (56.29% win rate), so Karthus is the one working uphill.
Statistically yes — Kog'Maw counters Karthus in bot lane, winning 56.29% of 421 Emerald+ games.
Kog'Maw takes Lethal Tempo on the Precision tree with Presence of Mind, Legend: Bloodline and Cut Down, and Inspiration secondary (Magical Footwear and Approach Velocity) vs Karthus.
Start Doran's Blade + Health Potion and back for Recurve Bow (≈1000g). Build Guinsoo's / Kraken first, then Terminus / Runaan's, with Mercury's Treads / Berserker's.
Playing the other side? Karthus vs Kog'Maw guide →
All Kog'Maw bot lane matchups →
More Kog'Maw bot lane matchups: vs Jinx · vs Kai'Sa · vs Kalista · vs Lucian · vs Miss Fortune · vs Nilah