Karthus Mid Lane is ranked B Tier and has a 49.39% win rate in LoL Patch 7.24. We've analyzed 741 Karthus Mid Lane games to compile our statistical Karthus Build Guide. For items, our build recommends: Rod of Ages, Sorcerer's Shoes, Zhonya's Hourglass, Liandry's Torment, Rabadon's Deathcap, and Void Staff. For runes, the strongest choice is Sorcery (Primary) with Arcane Comet (Keystone), and <pathBonus><pathSorcery>Sorcery</pathSorcery> + <pathPrecision>Precision</pathPrecision> </pathBonus> (Secondary). The optimal Summoner Spells for this build are Flash and Teleport. Starting items should include Health Potion, Doran's Ring, Refillable Potion, The Dark Seal, and Warding Totem (Trinket). Karthus's Best Mid Lane matchups include Brand, Kassadin, and Ahri. Karthus's Best Mid Lane counters are Anivia, Annie, and Ekko.
Karthus Summoner Spells






Karthus Starting Items





Karthus Runes
Karthus Items








Karthus Skill Order
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Karthus Trinkets




Karthus Boots





