Karthus is ranked Tier and has a 11.11% win rate in LoL Arena Patch 25.15. We've analyzed 13 Karthus games to compile our statistical Karthus Arena Build Guide. For items, our build recommends: Sorcerer's Shoes, Rabadon's Deathcap, Zhonya's Hourglass, Archangel's Staff, Void Staff, and Night Harvester. Karthus's best augments include Quest: Wooglet's Witchcap (Prismatic), Transmute: Prismatic (Gold), and Ice Cold (Silver). Karthus's Best Arena counters are Ahri, Ryze, and Sejuani.
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Best Prismatic Augments for Karthus
Quest: Wooglet's Witchcap
Tier: S

Chauffeur
Tier: A

Giant Slayer
Tier: A

Jeweled Gauntlet
Tier: B

Best Gold Augments for Karthus
Transmute: Prismatic
Tier: S+

Big Brain
Tier: S

It's Killing Time
Tier: A

Thread the Needle
Tier: A

Best Silver Augments for Karthus
Ice Cold
Tier: S+

Overflow
Tier: S

Witchful Thinking
Tier: A

Buff Buddies
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

85%
2

85%
3

23%
4

92%
8

31%
11

23%
14

23%
Karthus Boots
Buy %

85%
Karthus Situational Items
Buy %

23%

8%

46%

8%

38%

8%
Karthus Juices
Buy %

5%

1%

1%
Karthus Silver Augment Tier List











Karthus Gold Augment Tier List












Karthus Prismatic Augment Tier List







