Tier: Off MetaWin67.46%Role2.55%Pick0.03%Ban0.61%Games: 140KDA: 2.40Score: 66.47
Karthus Support is ranked Off Meta Tier and has a 67.46% win rate in LoL Patch 25.04. We've analyzed 140 Karthus Support games to compile our statistical Karthus Build Guide. For items, our build recommends: Malignance, Sorcerer's Shoes, Blackfire Torch, Liandry's Torment, Shadowflame, and Zaz'Zak's Realmspike. 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 Exhaust. Starting items should include World Atlas, Health Potion, and Stealth Ward. Karthus's Best Support matchups include Brand, Rell, and Malphite. Karthus's Best Support counters are Bard, Maokai, and Milio.
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Karthus Summoner Spells
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Win %
Pick %
54%
87%
47%
54%

49%
26%

65%
16%

57%
10%

67%
2%
Karthus Starting Items
Win %
Buy %


2

52%
87%


2
33%
4%
Karthus Runes
Win %
Pick %
48%
59%
68%
21%
61%
7%
78%
2%
Karthus Items

52%

52%

59%

57%

55%

50%

56%

75%
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




















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
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Karthus Trinkets
Win %
Buy %

56%
77%

49%
52%

17%
4%
Karthus Boots
Win %
Buy %

52%
45%

57%
15%

100%
1%

50%
1%

0%
1%
Karthus Support Items
Win %
Buy %

50%
63%

63%
11%

50%
1%