Kassadin's ultimate has many uses and is on a shorter cooldown than most, use it often.
Kassadin has multiple item paths; he can go caster via Mana and Ability Power or anti-caster with Cooldown Reduction and Magic Resist.
Try to get the Ancient Golem buff to counteract Riftwalk's increasing Mana cost.
Hitting multiple champions with the same ability can help quickly activate Darkness Rise.
Offense is your defense. Keep fighting to build up larger Indestructible shields.
Use Realm of Death on a low health enemy to guarantee the kill and keep their stats for the rest of a teamfight.
The Kassadin Mordekaiser synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Mordekaiser, compared to his overall stats. Significant differences are areas of focus that highlight how his gameplay changes when paired with this other champion.
Overall, Kassadin sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Mordekaiser. His KDA fell from NaN to NaN. This decrease shows that Mordekaiser helps Kassadin perform poorer in competitive LoL games. Yet, the small difference demonstrates that this performance change is only marginal.
When Kassadin plays on the same team as Mordekaiser, he sees a small decrease in his complete damage output. This may signal that Mordekaiser doesn't help protection for him to dish out more damage or that his presence on the team also helps increase the match's duration. Similarly, when Kassadin is played together with Mordekaiser on the same team, he usually scores many fewer killing sprees compared to when he plays without Mordekaiser. This is contrasting evidence that he is worse when playing synergisticly with Mordekaiser.
Moreover, when Kassadin plays with Mordekaiser on the same side, he usually receives a little more damage than when he plays alone. Taking more damage may indicate that Mordekaiser does a poor job of covering Kassadin during team fights.
There is no top champion pairing for Kassadin that will 100% of the time be his ideal teammate. However, overall, Mordekaiser is a good teammate for Kassadin. By locking into the same side as Kassadin, he raises their win rate by 2.0% to 52.0%. This clearly indicates that there is a potentially meaningful bond between Kassadin and Mordekaiser that allows them to perform stronger together than without each other.
Mordekaiser has a much lower diffuclty than Kassadin. That means you don't need to be very careful when arranging Mordekaiser comrades to fight alongside, as they will have to have a much lower level of skill to fight well with you.
Fighting together, you should expect to see an overall large increase in your team’s capability to deal magical damage. Together, these champions are able to dish out a surprising amount of magic type damage.
Conversely, by bringing Kassadin and Mordekaiser together, you may not be granting your side a lot of AD. Plan to include other champions on your team that nullifies this relative gap in their playstyle.
Regardless of your Mordekaiser ally's skill level, you need to focus on maximizing your income, outlasting your enemies, and taking down objectives. If you heed this simple advice, you will do well, regardless.
To truly master Kassadin in order to work well with Mordekaiser during both the early game and mid / late game phases of League matches, you should keep reading to learn additional tricks and insights into this champion pairing. If you pay attention to the build and stats presented above, you will increase your win rate by a lot.
The most crucial finished items to use in your Kassadin and Mordekaiser synergy build include Rabadon's Deathcap, Zhonya's Hourglass, and Rod of Ages. When Kassadin incorporated at least these three items in his build, he did a lot better as an ally of Mordekaiser than with many other commonly used item sets. In fact, Kassadin boasted an average win rate of 52.0% when synergizing his build and playstyle to Mordekaiser with this build.
To have the best likelihood of coming out on top against your oponents, Kassadin players should take the First Strike, Magical Footwear, Future's Market, Cosmic Insight, Sudden Impact, and Ultimate Hunter runes from the Inspiration and Domination rune sets. Out of all the rune sets players used for this team composition, this composite of runes yielded the greatest win rate. In fact, these runes provided a 52.0% winrate overall.
By default, tips, statistics, and builds on how to pair Mordekaiser with Kassadin are given for all skill levels combined. To filter the stats and builds to an individual rank, you can use the selection menu located above.