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How to Synergize Karthus with Jax on the Same TeamKarthus is in the b tier of champions

Karthus with Jax

How to Win With Karthus and Jax Paired TogetherKarthus is in the a tier of champions
Mage
FighterAssassin

How to Synergize Karthus and Jax

based on 2,733 Karthus with Jax pairs
Win Rate
49.2 %
K/D/A
2.16
Pick Rate
5.6 %

How We Analyze Champion Pairings in LoL

Our servers pull the stats from from millions of League matches directly from Riot Games each week. Karthus has fought alongside Jax in 2733 recently played, competitive games. By amassing so much great data from the makers of LoL, we feel confident that we can showcase robust, usable builds to help Karthus play with Jax. It is somewhat uncommon for Karthus to play with Jax as allies. This has only occurred in approximately 5.6% of rounds with Karthus.

Karthus Jax Synergy Summary

Unfortunately, Karthus has done a below average job of playing alongside Jax. Usually, he wins an acceptable 49.2% of the time the champs try and work together in. If you want to do better as Karthus when playing alongside Jax by figuring out how to better synergize your strategy with him, then check out the full build (with items, runes, summoner spells, and skills) below!

Best Karthus vs Jax Counter Build

Items

Starter Items

Time Target
Doran's RingHealth Potion

Early Items

~5 Mins
Fiendish CodexLost Chapter

Core Karthus Items

~22 Mins
MalignanceZhonya's HourglassLiandry's Torment

Optional Items

Rabadon's DeathcapShadowflameVoid StaffStormsurge

Summoner Spells

summonerexhaust summoner spell D
summonersmite summoner spell F

Skill Order

First skill for Karthus to level upq
>
Second ability for Karthus to level upe
>
Last skill for Karthus to max outw

Runes

DominationDark HarvestCheap ShotEyeball CollectionUltimate Hunter
PrecisionPresence of MindLast Stand
Adaptive ForceAdaptive ForceArmor
Karthus's passive ability p
Karthus's q ability q
Karthus's w ability w
Karthus's e ability e
Karthus's ultimate ability r
1
Q
2
E
3
Q
4
W
5
Q
6
R
7
Q
8
E
9
Q
10
E
11
R
12
E
13
E
14
W
15
W
16
R

Guide to Synergizing Karthus and Jax

Tips for Playing as Karthus with Jax

Lay Waste is very strong at farming minions and harassing enemy champions.

Ask your allies to help point out when you should use Requiem to get kills in different lanes.

Advice to Understand How Jax Will Play

Jax benefits greatly from items that have both Ability Power and Attack Damage such as Guinsoo's Rageblade and Hextech Gunblade.

Jax can Leap Strike to friendly units, including wards. You can use them to plan your escape.

Karthus Jax Synergy Stats

Karthus Image
Win Rate
49.2 %
VS
Win Rate
50.8 %
Jax Image
6.9
< Kills >
7
7.6
< Deaths >
7.6
9.5
< Assists >
9.5
1.63
< Killing Sprees >
1.63
97
< Minions Killed >
88
0.77
< Dragons Killed >
0.89
0.28
< Inhibitors >
0.28
246
< Physical Damage >
246
28,722
< Magic Damage >
29,153
1,870
< True Damage >
2,031
30,839
< Damage Dealt >
31,430
28,363
< Damage Taken >
29,785
12,601
< Gold Earned >
12,799
1.12
< Towers >
1.08
0.2
< Baron Takedowns >
0.23
8,098
< Total Healing >
9,279
14,701
< Experience >
14,921
19
< Vision Score >
19
8
< Wards Placed >
7
216
< Time Dealing CC >
221

How to Play with Jax as Karthus in LoL

The Karthus Jax synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Jax, compared to his overall stats. Significant differences are areas of focus that highlight how his gameplay changes when paired with this other champion.

Overall, Karthus sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Jax. His KDA decreased from NaN to NaN. This fall shows that Jax helps Karthus perform not as well in ranked League games. Yet, the small difference shows that this performance change is only marginal.

When Karthus is an ally to Jax, he observes a barely noticable drop in his total damage output. This may demonstrate that Jax does not provide protection for him to dish out more damage or that his presence also helps extend the round's duration. Similarly, when Karthus is played together with Jax on the same team, he usually scores many fewer killing sprees than when he plays on his own. This is contrasting evidence that he is worse when playing alongside Jax.

Additionally, when Karthus plays with Jax on the same side, he often receives a little less damage than when he plays alone. Getting dealt not as much damage could mean that Jax does a decent job of covering Karthus in teamfights.

Synergies between Karthus and Jax

Damage Types Compared

Karthus
Jax
Physical Damage
Magic Damage
True Damage

Champion Playstyles Contrasted

Karthus
Jax

Is Karthus better when played alongside Jax?

There is no top synergy for Karthus that will 100% of the time be his #1 ally. Yet, overall, Jax is a pretty good teammate for Karthus. By playing on the same team as Karthus, he improves their win rate by 1.9% to 49.2%. This shows that there is a good bond between Karthus and Jax that results in them performing at the top of their game together than alone.

Jax has a lower difficulty than Karthus. That means Karthus players don't need to be very careful when finding Jax comrades to fight alongside, as they will need a relatively low level of skill to play well with you.

When playing cooperatively, Karthus players should expect to observe an overall large increase in your team’s capability to to do a lot of AP damage. When paired, these champs are able to dish out a surprising amount of magic type damage.

Conversely, by grouping Karthus and Jax together, you probably will not be giving your other teammates a lot of engage potential. Make sure to have other champs on your team that fills this gap in this pairing's kit.

Regardless of your Jax ally's ability, you need to focus on increasing your gold income, warding to avoid ambushes, and taking down objectives. If you heed this simple advice, you will do well, regardless.

Additional Information for Karthus Players

How We Calculated Our Karthus Jax Synergy Build and Stats

For this guide on pairing Karthus and Jax, we analyzed 2,733 ranked and recent League of Legends matches. We perform advanced data cleaning and statistical methods to guarantee that our team synergy stats are accurate and reliable. You can be confident that our recommended build to pair Karthus with Jax comes from actual data and is not the fabrication of some random LoL player, as some other sites provide. You can use the filters at the top of the page to view your division's most relevant stats and build.

Other Useful Resources

Further Insights to Win with this Champion Pairing

If you would like to truly master Karthus in order to synergize with Jax during both the lane and mid / late game phases of LoL, you should keep reading to pick up some more tips and tricks for this champion pairing. If you listen to the build and tips shown above, you should grow your win rate significantly.

The ideal finished items to build first in your Karthus and Jax synergy build include Malignance, Zhonya's Hourglass, and Liandry's Torment. When Karthus included at least these three pieces in his build, he did significantly better as an ally of Jax than with many other common builds. In fact, Karthus had an average winrate of 49.2% when playing alongside Jax with these items in his kit.

To have the highest chance of crushing your oponents, Karthus players should take the Dark Harvest, Cheap Shot, Eyeball Collection, Ultimate Hunter, Presence of Mind, and Last Stand runes from the Domination and Precision rune sets. Of all the rune sets players used for Karthus and Jax pairings, this order of runes yielded the top win rate. In fact, these runes averaged a 49.2% win rate overall.

If you want to see Karthus and Jax cooperations tips and stats for a a distinct division rank, feel free to select one from the selection menu above. At first, the stats and strategies shown are calculated using all games finished with both champs.