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How to Synergize Sion with Karthus on the Same TeamSion is in the a tier of champions

Sion with Karthus

How to Win With Sion and Karthus Paired TogetherSion is in the b tier of champions
TankFighter
Mage

How to Synergize Sion and Karthus

based on 1,467 Sion with Karthus pairs
Win Rate
46.9 %
K/D/A
1.56
Pick Rate
1.4 %

How We Analyze Champion Pairings in LoL

We download data from from millions of LoL matches directly from Riot Games each week. Sion has gone into battle with Karthus in 1467 recent, ranked games. By gathering so much relevant data from the developers of League of Legends, we feel confident that we can present to you robust, usable builds to help Sion play with Karthus. It is very rare for Sion to play with Karthus as allies. This pairing has only taken place in about 1.4% of games with Sion.

Sion Karthus Synergy Summary

Unfortunately, Sion does a terrible job of synergizing with Karthus. Usually, he wins a lowly 46.9% of games the champions play on the same team. If you want to maximize your potential as Sion when playing with Karthus by learning how to better synergize your play style with him, then check out the full build (with items, runes, summoner spells, and skills) below!

Best Sion vs Karthus Counter Build

Items

Starter Items

Time Target
CullHealth Potion

Early Items

~5 Mins
Giant's BeltRuby Crystal

Core Sion Items

~22 Mins
Unending DespairThornmailHollow Radiance

Optional Items

Kaenic RookernRanduin's OmenHullbreakerTitanic Hydra

Summoner Spells

summonerflash summoner spell D
summonerteleport summoner spell F

Skill Order

First skill for Sion to level upq
>
Second ability for Sion to level upw
>
Last skill for Sion to max oute

Runes

ResolveGrasp of the UndyingDemolishConditioningOvergrowth
InspirationMinion DematerializerApproach Velocity
Attack SpeedAdaptive ForceMagic Resist
Sion's passive ability p
Sion's q ability q
Sion's w ability w
Sion's e ability e
Sion's ultimate ability r
1
W
2
Q
3
E
4
Q
5
Q
6
R
7
Q
8
W
9
Q
10
W
11
R
12
W
13
W
14
E
15
E
16
R

Guide to Synergizing Sion and Karthus

Tips for Playing as Sion with Karthus

Roar of the Slayer is a great setup ability to land a very powerful Decimating Smash.

The Soul Furnace buff displays how much shield strength is remaining, use this information to time its explosion perfectly.

You only have very slight turning ability during Unstoppable Onslaught, so make sure to use it in straight paths.

Advice to Understand How Karthus Will Play

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.

Sion Karthus Synergy Stats

Sion Image
Win Rate
46.9 %
VS
Win Rate
53.1 %
Karthus Image
4.5
< Kills >
4.3
7.5
< Deaths >
6.8
7.2
< Assists >
6.8
0.94
< Killing Sprees >
0.95
201
< Minions Killed >
186
0.08
< Dragons Killed >
0.12
0.61
< Inhibitors >
0.58
13,543
< Physical Damage >
13,015
8,396
< Magic Damage >
8,117
705
< True Damage >
641
22,646
< Damage Dealt >
21,774
51,896
< Damage Taken >
47,606
12,770
< Gold Earned >
12,155
3.13
< Towers >
3.06
0.03
< Baron Takedowns >
0.03
9,262
< Total Healing >
8,795
16,340
< Experience >
15,422
17
< Vision Score >
17
9
< Wards Placed >
8
709
< Time Dealing CC >
679

How to Play with Karthus as Sion in LoL

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

Overall, Sion sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Karthus. His KDA fell from NaN to NaN. This fall shows that Karthus helps Sion perform worse in competitive League of Legends rounds. Yet, the small difference demonstrates that this performance change is not very impactful.

When Sion is an ally to Karthus, he gets a little increase in his total damage dealt. This could indicate that Karthus provides protection for him to dish out more damage or that his allyship also helps increase the round's duration. Similarly, when Sion is played together with Karthus on the same team, he usually scores many fewer killing sprees compared to when he plays alone. This is contrasting evidence that he is worse when playing alongside Karthus.

Additionally, when Sion plays with Karthus on the same side, he typically takes more damage than when he plays alone. Taking more damage could indicate that Karthus does a poor job of covering Sion in team fights.

Synergies between Sion and Karthus

Damage Types Compared

Sion
Karthus
Physical Damage
Magic Damage
True Damage

Champion Playstyles Contrasted

Sion
Karthus

Is Sion better when played alongside Karthus?

There is no top champion pairing for Sion that will no matter what be his top synergy. Yet, Karthus is a very bad companion for Sion. By playing on the same team as Sion, he drops their win rate by -3.3% to 46.9%. This demonstrates that there is a very bad strategic relationship between Sion and Karthus that results in them performing worse together than alone.

Karthus has a greater difficulty than Sion. That means Sion players should be cautious when lining up Karthus comrades to go into battle on the same side as, as they will have to have a greater level of skill to fight well with you.

When playing cooperatively, Sion players will likely observe an overall large increase in your team’s capability to deal magical damage. Combined, these champs can blast through enemies with magic damage.

Conversely, by aligning Sion and Karthus together, you will not be providing your other teammates much AD. Make sure to bring other champs on your team that helps cover this hole in this pairing's capabilities.

Regardless of your Karthus ally's ability, you should focus on maximizing your gold income, outlasting your enemies, and clearing objectives. If you follow these simple suggestions, you will do well anyway.

Additional Information for Sion Players

How We Calculated Our Sion Karthus Synergy Build and Stats

For this guide on pairing Sion and Karthus, we analyzed 1,467 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 Sion with Karthus 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

To truly master Sion in order to work well with Karthus during both the laning and mid / late game phases of LoL matches, you should continue reading to gather a few extra tricks and insights into this champion pairing. If you pay attention to the build and tips presented above, you will grow your win rate significantly.

The most important finished items to have in your Sion and Karthus synergy build include Unending Despair, Thornmail, and Hollow Radiance. When Sion bought at least these three items in his build, he did significantly better when paired up with Karthus than with many other typical item sets. In fact, Sion had an average win rate of 46.9% when playing alongside Karthus with these items in his kit.

To have the highest chance of crushing your oponents, you should take the Grasp of the Undying, Demolish, Conditioning, Overgrowth, Approach Velocity, and Minion Dematerializer runes from the Resolve and Inspiration rune sets. Out of all the rune combinations players used for Sion and Karthus pairings, this blending of runes resulted in the greatest win rate. In fact, these runes provided a 46.9% winrate overall.

By default, tips, stats, and builds on how to pair Karthus with Sion are shown for all ranked divisions combined. If you want to scope the stats and builds to an individual rank, you can use the selection menu located above.