Tier: Off MetaWin54.30%Role4.83%Pick0.13%Games: 55KDA: 2.48Score: 53.10
Karthus Support is ranked Off Meta Tier and has a 54.30% win rate in LoL Ultimate Spellbook Patch 14.21. We've analyzed 55 Karthus Support games to compile our statistical Karthus Spellbook Build Guide. For items, our build recommends: Malignance, Blackfire Torch, Sorcerer's Shoes, Zaz'Zak's Realmspike, Liandry's Torment, and Rabadon's Deathcap. For runes, the strongest choice is Domination (Primary) with Dark Harvest (Keystone), and Sorcery (Secondary). The optimal Summoner Spells for this build are Placeholder and Flash. Starting items should include Amplifying Tome, Doran's Ring, and Refillable Potion. Karthus's Best Spellbook Support matchups include Lux and Yuumi.
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Karthus Summoner Spells


Win %
Pick %
44%
100%
44%
91%

50%
7%

0%
2%
Karthus Starting Items
Win %
Buy %



0%
2%




0%
2%
Karthus Runes
Win %
Pick %
46%
35%
52%
31%
20%
9%
25%
7%
Karthus Items

49%

63%

58%

48%

44%

52%

49%

75%
Karthus Skill Order
![]() | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
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![]() | Q | Q | Q | Q | Q | |||||||||||||
![]() | W | W | W | W | W | |||||||||||||
![]() | E | E | E | E | E | |||||||||||||
![]() | R | R | R |
Karthus Item Purchase Order




















Karthus Ultimate Spellbook Stats

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Karthus Trinkets
Win %
Buy %

49%
67%

48%
49%

25%
15%
Karthus Boots
Win %
Buy %

58%
44%

31%
24%

50%
4%

0%
4%

0%
4%
Karthus Support Items
Win %
Buy %

48%
60%

0%
4%