Maokai's passive makes him extremely durable against focus fire from spells - so long as he can still basic attack something.
Try looking for flanks or other situations where Nature's Grasp is unavoidable or takes enemies by surprise.
Saplings can be tossed into brush for empowered effect - but don't stack well.
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.
The Maokai Kassadin synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Kassadin, compared to his overall stats. Significant differences are areas of focus that highlight how his gameplay changes when paired with this other champion.
Overall, Maokai sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Kassadin. His KDA went down from NaN to NaN. This drop shows that Kassadin helps Maokai perform worse in competitive League matches. Yet, the small difference shows that this performance change is only marginal.
When Maokai is an ally to Kassadin, he sees a small decrease in his total damage dealt. This may demonstrate that Kassadin does not help cover for him to deal more damage or that his participation also helps extend the match's duration. Similarly, when Maokai is played alongside Kassadin on the same team, he usually scores many fewer killing sprees compared to when he plays on his own. This is contrasting evidence that he is worse when playing with Kassadin.
Moreover, when Maokai plays with Kassadin on the same team, he usually takes a little less damage than when he plays alone. Getting dealt not as much damage could mean that Kassadin does a decent job of covering Maokai in team fights.
There is no perfect synergy for Maokai that will always be his best ally. Yet, Kassadin is a very typical teammate for Maokai. By locking into the same side as Maokai, he increases their win rate by 0.9% to 53.5%. This shows that there is a weak synergy between Maokai and Kassadin that allows them to perform better together than without each other.
Kassadin has a much greater difficulty compared to Maokai. That means you need to be very careful when finding Kassadin comrades to fight alongside, as they will need a much higher level of skill to fight well with you.
Fighting on the same side, Maokai players should expect to observe an overall large increase in your team’s capability to deal magic damage. When paired, these champs can deal quite a lot of AP type damage.
Conversely, by pairing Maokai and Kassadin together, you probably will not be giving your side a great deal of AD. Make sure to pick other champs on your team that helps cover this relative disparity in this pairing's potential.
Regardless of the ability of your Kassadin ally, you should focus on maximizing your gold income, warding to avoid ambushes, and clearing objectives. If you do this, you should do well, regardless.
If you would like to learn all of the intricacies of Maokai in order to work well with Kassadin during both the laning and mid / late game phases of League of Legends matches, you should continue reading to learn a few extra tricks and insights into this champion pairing. If you mind the build and tips shown above, you will grow your win rate by a lot.
The most important items to use in your Maokai and Kassadin synergy build consist of Trailblazer, Thornmail, and Locket of the Iron Solari. When Maokai incorporated at least these three finished items in his build, he performed significantly better when fighting alongside Kassadin than with many other commonly used builds. In fact, Maokai had an average winrate of 53.5% when synergizing his build and playstyle to Kassadin with this build.
To have the greatest probability of vanquishing your oponents, you should use the Aftershock, Font of Life, Conditioning, Overgrowth, Legend: Tenacity, and Triumph runes from the Resolve and Precision rune sets. Out of all the rune builds players used for this champion pairing, this mixture of runes yielded the best win rate. Moreover, these runes averaged a 53.5% win rate overall.
By default, tips, stats, and builds on how to pair Kassadin with Maokai are given for all skill levels combined. If you want to narrow the stats and builds to an individual skill level, you may use the selection menu located above.