Karthus Support is ranked Off Meta Tier and has a 46.18% win rate in LoL Patch 9.24. We've analyzed 143 Karthus Support games to compile our statistical Karthus Build Guide. For items, our build recommends: Sorcerer's Shoes, Rod of Ages, Rylai's Crystal Scepter, Morellonomicon, 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 Flash and Ignite. Starting items should include Health Potion, Spellthief's Edge, Doran's Ring, Control Ward, and Warding Totem (Trinket). Karthus's Best Support matchups include Thresh, Yuumi, and Brand. Karthus's Best Support counters are Blitzcrank, Malphite, and Pyke.
Karthus Summoner Spells
Karthus Starting Items
Karthus Runes
Karthus Items
Karthus Skill Order
 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Q | Q | Q | Q | Q | |||||||||||||
 | W | W | W | W | W | |||||||||||||
 | E | E | E | E | E | |||||||||||||
 | R | R | R |
Karthus Trinkets
Karthus Boots
Average ADC Duo Queue Champions for Karthus Support(49% - 51% win rate with Karthus)
Even Support Matchups for Karthus Support(49% - 51% win rate for Karthus)
Even ADC Matchups for Karthus Support(49% - 51% win rate for Karthus)
