Karthus Support is ranked B Tier and has a 52.09% win rate in LoL Ultimate Spellbook Patch 11.24. We've analyzed 645 Karthus Support games to compile our statistical Karthus Spellbook Build Guide. For items, our build recommends: Liandry's Anguish, Sorcerer's Shoes, Zhonya's Hourglass, Demonic Embrace, Rabadon's Deathcap, and Shard of True Ice. For runes, the strongest choice is Domination (Primary) with Dark Harvest (Keystone), and Precision (Secondary). The optimal Summoner Spells for this build are Placeholder and Flash. Starting items should include Amplifying Tome, Spellthief's Edge, and Health Potion. Karthus's Best Spellbook Support matchups include Karma, Zilean, and Miss Fortune. Karthus's Best Spellbook Support counters are Taric, Ashe, and LeBlanc.
Karthus Summoner Spells
Karthus Starting Items
Karthus Runes
Karthus Items
Karthus Skill Order
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