Karthus Build Guides, Runes, Items, and Abilities - Patch 26.15
Karthus The Deathsinger
Find the best Karthus build guides for League of Legends 2026, Season 3 Patch 26.15. The MOBAFire community works hard to keep their LoL builds and guides updated, and will help you craft the best Karthus build for the 2026, Season 3 meta. Learn more about Karthus' abilities, skins, or even ask your own questions to the community!
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[14.21] [CHALLENGER] 70% WR Karthus Jungle Guide (NA)
[14.21] [CHALLENGER] 70% WR Karthus Jungle Guide (NA)
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[70% Winrate] Rank #84 Karthus In The World Guide (MID)
[70% Winrate] Rank #84 Karthus In The World Guide (MID)
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[14.18] Full magic penetration karthus
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[14.9] Jungle Karthus Guide
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S14 karthus jg guide
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Master Karthus Guide patch 14.2
Master Karthus Guide patch 14.2
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ManaMage
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Napalm Karthus
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Penetrator karthus
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ARAM 101 Ult Haste
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BATTLEMAGE MIDLANE KARTHUS
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KarthURF
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Super Sustain Karthus
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Karthus but you have ult up every time [ S14 ]
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Karthus Jungle 14.6
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S14 KARTHUS JUNGLE CARRY 80%+ (yes even in this meta)
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(SEASON 14) New Items karthus ONE SHOT
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Cashout Karthus
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2.4 Million Mastery-Lane Karthus Guide-Season 13
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[13.21] Harambe Homie - Karthus the top dog of the jungle!
Karthus Build & Runes
If you're looking for the best rune build for Karthus we've got you covered. Below you can find the best items and runes to build for Karthus, as determined by calculations of thousands of Plat+ League of Legends games. If you are already familiar with how to play Karthus this is a great resource to quickly get a good rune selection for Patch 26.15. However, if you are a new Karthus player we highly recommend reading through some of the guides above to learn why this build is strong on Karthus!
* Each section of the build is rated independently of the others
Karthus's Runes
46%
Win Rate 43% Pickrate
- 1
- 2
- 3
Second Best
49%
Win Rate 33% Pickrate
Third Best
52%
Win Rate 11% Pickrate
Karthus's Summoner Spells
48%
Win Rate 46% Pickrate
- 1
- 2
- 3
Karthus's Starters
48%
Win Rate 50% Pickrate
- 1
- 2
- 3
Karthus's Core Items
54%
Win Rate 12% Pickrate
- 1
- 2
- 3
Boots
Karthus's Luxury Items
Karthus's Ability Order
49%
Win Rate 70% Pickrate
- 1
- 2
- 3
Death Defied (PASSIVE)
Passive Ability
Second Best
45%
Win Rate 11% Pickrate
Death Defied (PASSIVE)
Passive Ability
Third Best
51%
Win Rate 5% Pickrate
Death Defied (PASSIVE)
Passive Ability
* Each section of the build is rated independently of the others
Karthus's Runes
55%
Win Rate 54% Pickrate
- 1
- 2
- 3
Second Best
54%
Win Rate 23% Pickrate
Third Best
46%
Win Rate 18% Pickrate
Karthus's Summoner Spells
54%
Win Rate 81% Pickrate
- 1
- 2
- 3
Karthus's Starters
52%
Win Rate 92% Pickrate
- 1
- 2
- 3
Karthus's Core Items
57%
Win Rate 26% Pickrate
- 1
- 2
- 3
Boots
Karthus's Luxury Items
Karthus's Ability Order
55%
Win Rate 46% Pickrate
- 1
- 2
- 3
Death Defied (PASSIVE)
Passive Ability
Second Best
50%
Win Rate 30% Pickrate
Death Defied (PASSIVE)
Passive Ability
Third Best
48%
Win Rate 5% Pickrate
Death Defied (PASSIVE)
Passive Ability
* Each section of the build is rated independently of the others
Karthus's Runes
47%
Win Rate 34% Pickrate
- 1
- 2
- 3
Second Best
51%
Win Rate 32% Pickrate
Third Best
48%
Win Rate 14% Pickrate
Karthus's Summoner Spells
52%
Win Rate 42% Pickrate
- 1
- 2
- 3
Karthus's Starters
46%
Win Rate 85% Pickrate
- 1
- 2
- 3
Karthus's Core Items
58%
Win Rate 12% Pickrate
- 1
- 2
- 3
Boots
Karthus's Luxury Items
Karthus's Ability Order
50%
Win Rate 39% Pickrate
- 1
- 2
- 3
Death Defied (PASSIVE)
Passive Ability
Second Best
47%
Win Rate 27% Pickrate
Death Defied (PASSIVE)
Passive Ability
Third Best
43%
Win Rate 4% Pickrate
Death Defied (PASSIVE)
Passive Ability
Karthus Counters
Learn Karthus' counters and discover matchups where they have an advantage! When you're starting a game of League of Legends you should always keep in mind if you'll be at an advantage or disadvantage against your opponent, so you can know whether to bully them or play safe. You can find detailed breakdowns of each matchup on CounterStats, and you can also check out some Karthus guides to see how to build and play against other champions you may find yourself up against!
This counter data is for Karthus JUNGLE in Plat+ games. The percent shown is the enemy champion's counter rating against Karthus. Counter rating is our own statistic that factors in counter kills, overall kills, early lead ratio, comeback ratio, and win percent to give the whole picture of that champion's effectiveness as a counter pick.
Best Against Karthus
Worst Against Karthus
Karthus Skins
Find Karthus's skins and when they were last on sale. Never miss a sale for your favorite skin by using our Wish List feature! You can also find all Karthus skins and chromas on Karthus's skins page.
Our Wish List feature will send you notifications when your skins are on sale!Karthus' Abilities
Toggle: Karthus creates a necrotic aura, dealing 7.5 / 12.5 / 17.5 / 22.5 / 27.5 (+5% of ability power) magic damage per second to nearby enemies.
Questions About Karthus
Latest Questions
Karthus DH or Predator
So I know before the DH rework [[Karthus]] used to take [[Predator]] because you could activate it and boost your ult damage on everyone that you hit. Does the new [[Dark Harvest]] work the same way? That is, if you have multiple targets within...
what can i build for karthus jngl???
what can i build for karthus jngl???
Karthus jungle?
In the most recent Pro Player Pick, Archie mentioned that one of his favorite junglers to play with is [[Karthus]]. I've heard of jungle [[Karthus]] before, and that it has been used by some pro team in the past (just can't think of the team), but...
Karthus and Soraka
So, a lot of people think of [[Soraka]] as the #1 counter to [[Karthus]]. Constantly in solo queue I see teammates pick [[Soraka]] because there is a [[Karthus]] on the other team. The common claim is that [[Soraka]]'s ultimate negates...
