Tier: Off MetaWin38.07%Role1.39%Pick0.03%Ban1.43%Games: 235KDA: 1.61Score: 39.34
Karthus Support is ranked Off Meta Tier and has a 38.07% win rate in LoL Patch 25.18. We've analyzed 235 Karthus Support games to compile our statistical Karthus Build Guide. For items, our build recommends: Malignance, Blackfire Torch, Sorcerer's Shoes, 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 Doran's Ring and Health Potion. Karthus's Best Support matchups include Lulu, Brand, and Senna. Karthus's Best Support counters are Thresh, Blitzcrank, and LeBlanc.
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Karthus Summoner Spells


Win %
Pick %
43%
86%
43%
70%

39%
32%

36%
5%

40%
4%

60%
2%
Karthus Starting Items
Win %
Buy %


2
33%
1%


2
0%
0%
Karthus Runes
Win %
Pick %
41%
45%
46%
21%
31%
9%
65%
3%
Karthus Items

39%

40%

47%

50%

40%

44%

40%

52%
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 Trinkets
Win %
Buy %

40%
95%

42%
67%

43%
6%
Karthus Boots
Win %
Buy %

47%
74%

50%
10%

67%
1%

0%
1%

0%
0%
Karthus Support Items
Win %
Buy %

44%
87%

29%
3%

100%
0%