Source: Ranked + player metaPatch: 16.17Window: patchRegion: allRank: emerald_plusQueue: ranked_soloSample: 51Updated 9/11/2026, 8:21:30 PM
Confidence: High+6.9% vs 50%51 games
Lane phases
Levels 1–2
Karthus edge
Karthus can look for early pressure.
Levels 3–5
Karthus edge
Convert leads before Malzahar scales or roams.
Level 6+
Karthus edge
Ultimate timing often swings the next two waves.
Mid / late
Karthus edge
Close out with vision and objective control.
Why?
Sample-basedFavored
- Sample win rate for Karthus is 56.9% in this matchup.
- Karthus is favored in the current Emerald+ sample.
Treat this as a Favored matchup for Karthus into Malzahar — prioritize cooldown windows and jungle tracking.
Do
- Look for crash + roam when you hit a spike.
- Track summoner spells and ultimate cooldowns before committing.
- Play for wave states that let you crash and reset safely.
Don't
- Don't throw the lead diving without vision.
- Don't force extended trades when key abilities are down.
- Don't ignore jungle timers when the lane is volatile.
Matchup build callout
Full builds →Most-played Karthus page (ADC): Deathfire Touch Build · 60.6% WR · 71 games
Skill order: Q › E › W
Patch: 16.17Region: naRank: emerald_plusQueue: ranked_soloSample: 97Updated 9/11/2026, 8:18:15 PM