Tier: SWin66.67%Pick5.83%Games: 42KDA: 2.76Score: 60.02
Karthus is ranked S Tier and has a 66.67% win rate in LoL ARAM Patch 25.12. We've analyzed 42 Karthus games to compile our statistical Karthus ARAM Build Guide. For items, our build recommends: Blackfire Torch, Malignance, Liandry's Torment, Shadowflame, Rabadon's Deathcap, and Void Staff. 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 Mark. Starting items should include Lost Chapter and Refillable Potion. Karthus's Best ARAM matchups include Brand, Irelia, and Jayce. Karthus's Best ARAM counters are Morgana and Tahm Kench.
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Karthus Summoner Spells


Win %
Pick %
66%
98%
65%
95%

100%
5%

100%
2%
Karthus Starting Items
Win %
Buy %


68%
74%


2
75%
10%
Karthus Runes
Win %
Pick %
73%
42%
59%
29%
100%
7%
100%
2%
Karthus Items

67%

71%

66%

67%

68%

68%

59%
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























Karthus Situational Items
Win %
Buy %

86%
33%

80%
12%

60%
12%

50%
5%

100%
2%

100%
2%
Karthus Boots
Win %
Buy %

61%
43%

0%
5%