Despair is very effective against other tanks, so make sure you're in range of opponents with the highest Health.
Amumu is highly dependent on teammates, so try laning with your friends for maximum effectiveness.
Cooldown Reduction on Amumu is very strong, but it's often difficult to itemize for it. Grab the Golem buff whenever possible to gain Cooldown Reduction without sacrificing stats.
Make sure to buy items that will evolve at least 1 or 2 of your spells.
Work with your teammates to set up your Ultimate and optimize damage with your passive.
Try to catch enemy carries alone to burst them with Icathian Rain.
The Amumu Kai'Sa synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Kai'Sa, compared to his overall stats. Significant differences are areas of focus that highlight how his gameplay changes when paired with this other champion.
Overall, Amumu sees a very large drop in his KDA (ratio of kills and assists to deaths) when paired with Kai'Sa. His KDA worsened from NaN to NaN. This fall shows that Kai'Sa helps Amumu perform worse in ranked LoL rounds. Yet, the small difference indicates that this performance change is not very impactful.
When Amumu plays on the same team as Kai'Sa, he observes a barely noticable drop in his complete damage dealt. This change could demonstrate that Kai'Sa doesn't help cover for him to dish out more damage or that her allyship also helps extend the match's duration. Similarly, when Amumu is played together with Kai'Sa 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 Kai'Sa.
Moreover, when Amumu plays with Kai'Sa on the same side, he on average takes a little less damage than when he fights alone. Receiving not as much damage may mean that Kai'Sa does a decent job of covering Amumu during teamfights.
There is no ideal champion pairing for Amumu that will no matter what be his ideal ally. Yet, Kai'Sa is a terrible teammate for Amumu. By playing on the same side as Amumu, she lowers their win rate by -3.2% to 45.8%. This proves that there is a terrible bond between Amumu and Kai'Sa that results in them performing not as well together than alone.
Kai'Sa has a greater difficulty than Amumu. That means you need to be careful when arranging Kai'Sa allies to fight alongside, as they will require a greater level of skill to work well with you.
Playing cooperatively, Amumu players will likely observe 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.
Although, by pairing Amumu and Kai'Sa together, you will not be providing your other allies much utility. Make sure to pick other champs on your team that neutralizes this gap in this pairing's kit.
Regardless of your Kai'Sa ally's skill level, you need to focus on increasing your income, staying alive by avoiding foolish fights, and taking down objectives. If you follow these simple suggestions, you should do well, regardless.
If you would like to truly master Amumu to pair well with Kai'Sa during both the laning and mid / late game phases of League of Legends matches, you should keep reading to master some more lessons on this champion pairing. If you listen to the build and tips presented here, you will increase your win rate significantly.
The ideal items to use in your Amumu and Kai'Sa synergy build include Thornmail, Randuin's Omen, and Jak'Sho, The Protean. When Amumu combined at least these three finished items in his build, he did much better when fighting alongside Kai'Sa than with most other typical item sets. In fact, Amumu boasted an average winrate of 45.8% helping carry Kai'Sa with these items in his kit.
To have the highest likelihood of annihilating your oponents, Amumu players should take the Aftershock, Font of Life, Bone Plating, Unflinching, Cheap Shot, and Ultimate Hunter runes from the Resolve and Domination rune sets. Of all the runes players chose for Amumu and Kai'Sa pairings, this mix of runes resulted in the top win rate. In fact, these runes averaged a 45.8% winrate overall.
By default, tips, stats, and builds on how to team up Kai'Sa with Amumu are presented for every ranked division. If you would like to filter the stats and builds to a particular player tier, you may use the selection menu earlier in the counter matchup guide.