Rune choice
This setup pairs Sorcery with Precision and uses Deathfire Touch as its keystone. The highlighted runes and shards belong to this imported setup; inspect an icon to read its effect.
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Role
All servers · Patch 26.20 · 2026-10-16 03:49 UTC · Data sources
Build Karthus Bot
Core items
Compare win rates by rank
Choose a rank to load its own build and statistics. Win rates describe different player samples; they do not measure how easy a rank is.
Sorcery 
Precision 
Offense 
Ability Haste
Flex 
Adaptive Force
Defense 
Health
Exhaust
Flash
Champion win rate against each opponent, for the selected role and rank. Small samples are less reliable.
Weak against
Strong against
Karthus Bot build guide: runes, items and skill order
This Karthus Bot build covers League of Legends patch 16.20. Compare the selected runes, starting items and core purchases before the match, then adapt your later purchases to enemy damage and defenses. The source recommendations use the Grandmaster filter across all servers.
For Karthus runes, this setup uses Deathfire Touch with Precision as the secondary path. Check the highlighted stat shards as well: they are part of the rune page, not extra items. Hover or tap a rune to read its effect before deciding whether it suits your matchup.
The displayed Karthus skill order starts with Q and prioritizes Q → E → W. The level-by-level grid covers the first 15 levels supplied by the source. Follow that sequence as a reference while accounting for what your lane or team needs. Item win rates describe completed purchases and should be read alongside their game counts.
Which items should you build on Karthus Bot?
The most popular core items in this Karthus Bot build are Blackfire Torch → Shadowflame → Stormsurge. Check starting items and boots separately, then compare later item options against the enemy team. This is a reference for patch 26.20, not a fixed purchase order for every match.
Which runes should you choose for Karthus Bot?
For the selected Grandmaster rank filter, the rune page uses Deathfire Touch with Precision. Review each rune tooltip and the selected stat shards before entering champion select.
How do you compare Karthus builds by rank?
Use the rank selector to view a separate build and win rate for Iron, Bronze, Silver, Gold, Platinum, Emerald, Diamond, Master, Grandmaster or Challenger. Keep the same role when comparing. A small sample is less reliable, and a higher win rate alone does not prove a better build.
How this build works
Core purchases
The most popular core combination in the source is Blackfire Torch → Shadowflame → Stormsurge. Treat it as a starting point: choose defensive or penetration options for the opponents you are facing.
Read the sample
The core combination has an observed win rate of 60.00% across 60 games. These are games that reached this purchase combination, not all games played by the champion. A completed build can appear stronger because winning players can afford more items.
How to play Karthus: combos, tips and builds
Learn Karthus abilities and prepare your first games. Find builds for each supported role.
Read the guide