Karthus Support is ranked Off Meta Tier and has a 32.26% win rate in LoL Patch 7.24. We've analyzed 31 Karthus Support games to compile our statistical Karthus Build Guide. For items, our build recommends: Rod of Ages, Sorcerer's Shoes, Eye of the Watchers, Rylai's Crystal Scepter, Rabadon's Deathcap, and Void Staff. For runes, the strongest choice is Sorcery (Primary) with Summon Aery (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, Ancient Coin, and Warding Totem (Trinket). Karthus's Best Support matchups include Braum. Karthus's Best Support counters are Tahm Kench.
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
Best ADC Duo Queue Champions for Karthus Support(over 51% win rate with Karthus)
Average ADC Duo Queue Champions for Karthus Support(49% - 51% win rate with Karthus)
Below Average ADC Duo Queue Champions for Karthus Support(under 49% win rate with Karthus)
Best Support Champions to Counter Karthus Support(under 49% win rate for Karthus)
Best Support Matchups for Karthus Support(over 51% win rate for 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)
