Karthus is ranked Tier and has a 26.67% win rate in LoL Arena Patch 25.09. We've analyzed 15 Karthus games to compile our statistical Karthus Arena Build Guide. For items, our build recommends: Sorcerer's Shoes, Rabadon's Deathcap, Zhonya's Hourglass, Shadowflame, Void Staff, and Detonation Orb. Karthus's best augments include Quest: Wooglet's Witchcap (Prismatic), Apex Inventor (Gold), and Executioner (Silver). Karthus's Best Arena matchups include Hecarim, Kai'Sa, and Lux. Karthus's Best Arena counters are Aatrox, Fiora, and Lee Sin.
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Best Prismatic Augments for Karthus
Quest: Wooglet's Witchcap
Tier: A

Giant Slayer
Tier: A

Doomsayer
Tier: A

Chain Lightning
Tier: B

Best Gold Augments for Karthus
Apex Inventor
Tier: S

Vanish
Tier: S

Magic Missile
Tier: A

Phenomenal Evil
Tier: A

Best Silver Augments for Karthus
Executioner
Tier: S

Juice Press
Tier: A

Firefox
Tier: A

ADAPt
Tier: A

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 Items by Round
Buy %
1

80%
2

87%
3

27%
4

87%
8

33%
11

40%
14

47%
Karthus Boots
Buy %

87%

7%
Karthus Situational Items
Buy %

47%

47%

7%

7%

7%

7%
Karthus Juices
Buy %

5%

1%

1%
Karthus Silver Augment Tier List










Karthus Gold Augment Tier List











Karthus Prismatic Augment Tier List








