Karthus Support is ranked Off Meta Tier and has a 45.84% win rate in LoL Patch 7.24. We've analyzed 731 Karthus Support games to compile our statistical Karthus Build Guide. For items, our build recommends: Sorcerer's Shoes, Rod of Ages, Frost Queen's Claim, Rylai's Crystal Scepter, Zhonya's Hourglass, and Rabadon's Deathcap. For runes, the strongest choice is Sorcery (Primary) with Arcane Comet (Keystone), and <pathBonus><pathSorcery>Sorcery</pathSorcery> + <pathInspiration>Inspiration</pathInspiration> </pathBonus> (Secondary). The optimal Summoner Spells for this build are Flash and Exhaust. Starting items should include Health Potion, Spellthief's Edge, Refillable Potion, Doran's Ring, and Warding Totem (Trinket). Karthus's Best Support matchups include Brand, Braum, and Morgana. Karthus's Best Support counters are Blitzcrank, Nami, and Veigar.
Karthus Summoner Spells






Karthus Starting Items





Karthus Runes
Karthus Items








Karthus Skill Order
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Karthus Trinkets




Karthus Boots





