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.
Your most important function as a support is to keep fragile allies safe. Keep Devour's range and cooldown in mind and position accordingly!
Consider carefully when to use Thick Skin's active. Sometimes shielding early to avoid further damage is good, but sometimes the healing is more beneficial.
The Kassadin Tahm Kench synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Tahm Kench, 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 Tahm Kench. His KDA worsened from NaN to NaN. This worsening shows that Tahm Kench helps Kassadin perform poorer in ranked LoL rounds. Yet, the small difference demonstrates that this performance change is not very impactful.
When Kassadin is an ally to Tahm Kench, he sees a barely noticable drop in his total damage output. This could signal that Tahm Kench does not help protection for him to deal more damage or that his participation also helps extend the round's duration. Similarly, when Kassadin is played together with Tahm Kench on the same side, 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 synergisticly with Tahm Kench.
Moreover, when Kassadin plays with Tahm Kench on the same side, he often takes a little less damage than when he fights alone. Taking not as much damage could indicate that Tahm Kench does a decent job of covering Kassadin during teamfights.
There is no one best companion for Kassadin that will 100% of the time be his best synergy. However, overall, Tahm Kench is a very typical ally for Kassadin. By being on the same team as Kassadin, he improves their win rate by 0.3% to 50.3%. This proves that there is not really a strong synergy between Kassadin and Tahm Kench that results in them performing stronger together than alone.
Tahm Kench has a much lower diffuclty than Kassadin. That means Kassadin players don't need to be cautious when arranging Tahm Kench teammates to fight alongside, as they will need a much lower level of skill to cooperate well with you.
When playing alongside, Kassadin players should expect to observe an overall large increase in your team’s capacity to deal magical damage. Combined, these champions can blast through enemies with magic damage.
Conversely, by bringing Kassadin and Tahm Kench together, you may not be giving your side a great deal of AD. Plan to include other champs on your team that helps cover this relative disparity in their abilities.
Regardless of your Tahm Kench ally's skill level, you need to focus on increasing your gold income, outlasting your enemies, and clearing objectives. If you heed this simple advice, you should do well anyway.
To truly master Kassadin in order to work well with Tahm Kench during both the early game and mid / late game phases of LoL, you should keep reading to learn additional tips and tricks for this champion pairing. If you use the build and suggestions shown here, you will increase your win rate by a lot.
The most crucial finished items to use in your Kassadin and Tahm Kench synergy build include Seraph's Embrace, Malignance, and Rod of Ages. When Kassadin incorporated at least these three great items in his build, he performed significantly better when fighting alongside Tahm Kench than with most other commonly used builds. In fact, Kassadin boasted an average win rate of 50.3% helping carry Tahm Kench with these items in his kit.
To have the highest probability of defeating your oponents, you 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. Of all the rune builds players used for this champion pairing, this combo of runes resulted in the best win rate. Moreover, these runes provided a 50.3% win rate overall.
By default, tips, statistics, and builds on how to pair Tahm Kench with Kassadin are displayed for all ranked divisions combined. If you would like to scope the statistics and builds to a specific skill level, you should use the selection menu earlier in the counter matchup guide.