Karthus is ranked Tier and has a 40.00% 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, Malignance, Rabadon's Deathcap, Void Staff, Perplexity, and Rite Of Ruin. Karthus's best augments include Jeweled Gauntlet (Prismatic), Soul Siphon (Gold), and Witchful Thinking (Silver). Karthus's Best Arena matchups include Swain, Kai'Sa, and Kha'Zix. Karthus's Best Arena counters are Annie, Caitlyn, and Ezreal.
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Best Prismatic Augments for Karthus
Jeweled Gauntlet
Tier: S

Eureka
Tier: B

Ultimate Revolution
Tier: B

Prismatic Egg
Tier: B

Best Gold Augments for Karthus
Soul Siphon
Tier: A

Quest: Urf's Champion
Tier: A

Restart
Tier: A

Dark Blessing
Tier: A

Best Silver Augments for Karthus
Witchful Thinking
Tier: S+

Parasitic Mutation
Tier: A

Tank Engine
Tier: A

Overflow
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

73%
2

67%
4

40%
8

100%
11

33%
14

33%
17

33%
Karthus Boots
Buy %

67%

7%
Karthus Situational Items
Buy %

20%

13%

27%

7%

7%

20%
Karthus Juices
Buy %

5%

1%
Karthus Silver Augment Tier List











Karthus Gold Augment Tier List












Karthus Prismatic Augment Tier List









