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.
Keeping tunnels spread out across the map will ensure you have choices when you want to cast Void Rush.
Cast Burrow before travelling around the map to take advantage of the increased Move Speed and the safety provided by Tremor Sense.
Tremor Sense can warn you of enemies closing in, and is particularly useful when entering enemy territory.
The Kassadin Rek'Sai synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Rek'Sai, 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 Rek'Sai. His KDA decreased from NaN to NaN. This negative change shows that Rek'Sai helps Kassadin perform poorer in competitive LoL games. Yet, the small difference indicates that this performance change is only marginal.
When Kassadin plays on the same team as Rek'Sai, he observes a barely noticable drop in his complete damage dealt. This change could signal that Rek'Sai does not help protection for him to dish out more damage or that his participation also helps increase the game's duration. Similarly, when Kassadin is played together with Rek'Sai on the same side, he usually scores many fewer killing sprees than when he plays on his own. This is contrasting evidence that he is worse when playing with Rek'Sai.
Moreover, when Kassadin plays with Rek'Sai on the same team, he typically takes less damage than when he plays alone. Receiving not as much damage could mean that Rek'Sai does a decent job of protecting Kassadin in teamfights.
There is no ideal synergy for Kassadin that will always be his top teammate. Yet, overall, Rek'Sai is a below average ally for Kassadin. By being on the same team as Kassadin, he drops their win rate by -2.1% to 47.9%. This signals that there is a bad strategic relationship between Kassadin and Rek'Sai that results in them performing worse together than without each other.
Rek'Sai has a much lower diffuclty than Kassadin. That means Kassadin players don't need to be cautious when arranging Rek'Sai teammates to fight alongside, as they will have to have a much lower level of skill to play well with you.
Working cooperatively, Kassadin players should expect to observe an overall large increase in your team’s capability to destroy wih physical damage. Combined, these champions can tear through the other team with a lot of physcial damage.
In contrast, by grouping Kassadin and Rek'Sai together, you probably will not be giving your side much support. We recommend you have other champions on your team that helps cover this relative gap in their capabilities.
Regardless of the skill of your Rek'Sai teammate, you need to focus on maximizing your gold income, outlasting your enemies, and clearing objectives. If you heed this simple advice, you should do well anyway.
If you would like to learn all of the intricacies of Kassadin to work well with Rek'Sai during both the early game and mid / late game phases of League of Legends rounds, you should keep reading to learn some more tips and tricks for this champion pairing. If you mind the build and tips presented above, you will grow your win rate by a lot.
The ideal finished items to use in your Kassadin and Rek'Sai synergy build consist of Seraph's Embrace, Malignance, and Rod of Ages. When Kassadin combined at least these three pieces in his build, he performed a lot better when fighting alongside Rek'Sai than with many other commonly used item sets. In fact, Kassadin had an average winrate of 47.9% helping carry Rek'Sai with these items in his kit.
To have the greatest chance of coming out on top against your oponents, Kassadin players should equip 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 that we analyzed for this team composition, this combination of runes resulted in the highest win rate. Notably, these runes provided a 47.9% win rate overall.
By default, tips, stats, and builds on how to team up Rek'Sai with Kassadin are given for all ranked divisions combined. If you want to scope the statistics and builds to a particular player tier, you may use the selection menu located earlier on the page.