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.
If you have trouble landing Prismatic Barrier, remember that it returns to you after it reaches max range. Try positioning yourself to hit your allies with its return trip.
Lux has great zone control abilities. Try to set up Lucent Singularity to prevent an enemy's advance or escape.
Lucent Singularity is a great scouting tool. Try throwing it into brush before walking into it to check for ambushes.
The Kassadin Lux synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Lux, 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 Lux. His KDA decreased from NaN to NaN. This worsening shows that Lux helps Kassadin perform worse in ranked League games. Yet, the small difference shows that this performance change is not very impactful.
When Kassadin is paired with Lux, he observes a little drop in his full damage dealt. This difference may demonstrate that Lux does not help cover for him to deal more damage or that her presence on the team also helps extend the round's duration. Similarly, when Kassadin is played with Lux 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 with Lux.
Moreover, when Kassadin plays with Lux on the same side, he typically takes a little more damage than when he fights alone. Taking more damage could mean that Lux does a poor job of protecting Kassadin during team fights.
There is no one best champion pairing for Kassadin that will always be his top synergy. Yet, overall, Lux is a very typical ally for Kassadin. By playing on the same team as Kassadin, she lowers their win rate by -0.2% to 49.8%. This demonstrates that there is not really a strong synergy between Kassadin and Lux that allows them to perform not as well together than alone.
Lux has a much lower diffuclty than Kassadin. That means you don't need to be cautious when lining up Lux allies to go into battle on the same side as, as they will need a much lower level of skill to fight well with you.
Working on the same side, you will likely witness an overall large increase in your team’s ability to deal magic damage. When paired, these two are able to dish out a surprising amount of magic type damage.
Although, by pairing Kassadin and Lux together, you probably will not be giving your team a lot of sustained damage output. Plan to bring other champs on your team that neutralizes this relative hole in this pairing's kit.
Regardless of the ability of your Lux 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, regardless.
To truly master Kassadin to pair well with Lux during both the early game and mid / late game phases of LoL matches, you should continue reading to learn some more tricks and insights into this champion pairing. If you mind the build and suggestions displayed here, you should increase your win rate by a lot.
The most important finished items to focus on in your Kassadin and Lux synergy build consist of Seraph's Embrace, Rabadon's Deathcap, and Void Staff. When Kassadin included at least these three finished items in his build, he performed much better when paired up with Lux than with most other commonly used item sets. In fact, Kassadin had an average win rate of 49.8% helping carry Lux with these items in his kit.
To have the best chance of vanquishing 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. Of all the rune builds players picked for Kassadin and Lux pairings, this combination of runes yielded the greatest win rate. In fact, these runes provided a 49.8% win rate overall.
By default, tips, statistics, and builds on how to pair Lux with Kassadin are given for every ranked division. If you want to narrow the statistics and builds to a particular rank, you should use the selection menu above.