Karthus is ranked Tier and has a 84.31% win rate in LoL ARAM Patch 25.13. We've analyzed 20 Karthus games to compile our statistical Karthus ARAM Build Guide. For items, our build recommends: Blackfire Torch, Liandry's Torment, Sorcerer's Shoes, Rylai's Crystal Scepter, Shadowflame, and Malignance. For runes, the strongest choice is Domination (Primary) with Dark Harvest (Keystone), and Sorcery (Secondary). The optimal Summoner Spells for this build are Flash and Mark. Starting items should include Lost Chapter and Refillable Potion. Karthus's Best ARAM matchups include Ahri, Jinx, and Karma. Karthus's Best ARAM counters are Ezreal, Katarina, and Nidalee.
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Karthus Summoner Spells
Win %
Pick %
60%
100%
59%
85%
100%
5%
100%
5%
0%
5%
Karthus Starting Items
Win %
Buy %
69%
65%
100%
5%
Karthus Runes
Win %
Pick %
64%
46%
68%
32%
100%
5%
0%
5%
Karthus Items
64%
71%
64%
80%
73%
33%
100%
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 Item Purchase Order
28003000
1100
2600
32002700Karthus Situational Items
Win %
Buy %
75%
20%
60%
25%
100%
5%
100%
5%
100%
5%
0%
10%
Karthus Boots
Win %
Buy %
64%
70%
0%
5%
Best Karthus Duo Champions in ARAM(over 51% win rate with Karthus)
Average Karthus Duo Champions in ARAM(49% - 51% win rate with Karthus)
Even Matchups for Karthus in ARAM(49% - 51% win rate for Karthus)
