Source: Ranked + player metaPatch: 16.17Window: patchRegion: allRank: emerald_plusQueue: ranked_soloSample: 44Updated 10/28/2026, 4:35:18 AM
Confidence: Medium+6.8% vs 50%44 games
Lane phases
AI heuristicLevels 1–2
Karthus edge
Karthus can look for early pressure.
Levels 3–5
Karthus edge
Convert leads before Lux 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?
AI heuristicFavored
- Sample win rate for Karthus is 56.8% in this matchup.
- Karthus is favored in the current Emerald+ sample.
Treat this as a Favored matchup for Karthus into Lux — 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 · 58.4% WR · 125 games
Skill order: Q › E › W
Patch: 16.17Region: naRank: emerald_plusQueue: ranked_soloSample: 162Updated 10/22/2026, 1:02:15 PM