Tier: Off MetaWin36.81%Role3.31%Pick0.03%Ban0.26%Games: 137KDA: 1.88Score: 41.99
Karthus Support is ranked Off Meta Tier and has a 36.81% win rate in LoL Patch 25.06. We've analyzed 137 Karthus Support games to compile our statistical Karthus Build Guide. For items, our build recommends: Sorcerer's Shoes, Blackfire Torch, Malignance, Zaz'Zak's Realmspike, Liandry's Torment, and Shadowflame. 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 Oracle Lens. Karthus's Best Support matchups include Swain, Leona, and Milio. Karthus's Best Support counters are Brand, Maokai, and Zilean.
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Karthus Summoner Spells


Win %
Pick %
44%
89%
51%
49%

47%
33%

38%
9%

45%
8%

50%
7%
Karthus Starting Items
Win %
Buy %


2

47%
96%


2

0%
1%
Karthus Runes
Win %
Pick %
44%
43%
54%
15%
52%
11%
45%
10%
Karthus Items

55%

43%

55%

47%

55%

56%

49%

68%
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 %

49%
67%

43%
58%

67%
9%
Karthus Boots
Win %
Buy %

55%
72%

12%
12%

100%
1%
Karthus Support Items
Win %
Buy %

47%
74%

60%
4%

25%
3%