Karthus is ranked Tier and has a 12.44% win rate in LoL Arena Patch 25.17. We've analyzed 87 Karthus games to compile our statistical Karthus Arena Build Guide. For items, our build recommends: Sorcerer's Shoes, Rite Of Ruin, Rabadon's Deathcap, Void Staff, Morellonomicon, and Detonation Orb. Karthus's best augments include Jeweled Gauntlet (Prismatic), Ethereal Weapon (Gold), and Firefox (Silver). For team partners, the best champions include: Cho'Gath and Viego. Karthus's Best Arena matchups include Gnar, Renekton, and Xayah. Karthus's Best Arena counters are Lux, Anivia, and Nidalee.
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Best Prismatic Augments for Karthus
Jeweled Gauntlet
Tier: S+

Transmute: Chaos
Tier: S+

Back To Basics
Tier: S

Infernal Conduit
Tier: S

Best Gold Augments for Karthus
Ethereal Weapon
Tier: S+

Thread the Needle
Tier: S+

With Haste
Tier: S+

Quest: Steel Your Heart
Tier: S

Best Silver Augments for Karthus
Firefox
Tier: S+

Goredrink
Tier: S+

ADAPt
Tier: S+

Repulsor
Tier: S

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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![]() | E | E | E | E | E | |||||||||||||
![]() | R | R | R |
Karthus Items by Round
Buy %
1

67%
2

82%
3

28%
4

17%
8

64%
11

31%
14

13%
Karthus Boots
Buy %

82%

1%

1%
Karthus Situational Items
Buy %

17%

38%

39%

22%

1%

1%
Karthus Juices
Buy %

3%

0%

0%
Karthus Silver Augment Tier List































Karthus Gold Augment Tier List




































Karthus Prismatic Augment Tier List




















