Karthus build guide, best Karthus runes and items to use in Patch 11.2. This Karthus Support build for LoL is based on win rates and meta popularity. Use this Karthus build guide to statistically win more games in League.
Find out the best Karthus build by following the statistics on this page. You are more likely to perform better in your games by following this build.
The most winning Karthus build involves a skill priority of Lay Waste Defile Wall of Pain , running a Sorcery | Precision rune set-up and taking Flash Exhaust as summoner spells.
Start your Karthus build off by running Spellthief's Edge Health Potion , progressing that into Liandry's Anguish Sorcerer's Shoes Demonic Embrace Rabadon's Deathcap Void Staff Rylai's Crystal Scepter , But remember to pick the correct situational items depending on game factors such as enemy composition.
Here are the best Karthus runes for this build. Take Summon Aery as your keystone in the Sorcery rune tree. The remaining slots in your primary tree should be the Manaflow Band Absolute Focus Scorch runes.
Karthus's secondary runes should be in the Precision rune tree, taking the Triumph Last Stand runes.
As far as your shards go, take CDRScaling Adaptive Armor . Following these runes for Karthus will help you in your games. Make sure to make situational changes to your runes depending on team comps and counters.
While you're looking at our Karthus build