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.
Jax benefits greatly from items that have both Ability Power and Attack Damage such as Guinsoo's Rageblade and Hextech Gunblade.
Jax can Leap Strike to friendly units, including wards. You can use them to plan your escape.
The Amumu Jax synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Jax, 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 large worsening in his KDA (ratio of kills and assists to deaths) when paired with Jax. His KDA worsened from NaN to NaN. This fall shows that Jax helps Amumu perform not as well in competitive LoL rounds. Yet, the small difference proves that this performance change is not very impactful.
When Amumu tries to synergize with Jax, he gets a little decrease in his complete damage dealt. This difference could demonstrate that Jax does not help cover for him to deal more damage or that his support also helps increase the game's duration. Similarly, when Amumu is played together with Jax on the same side, he usually scores many fewer killing sprees compared to when he plays without Jax. This is contrasting evidence that he is worse when playing alongside Jax.
Moreover, when Amumu plays with Jax on the same team, he typically takes a little less damage than when he plays alone. Taking not as much damage could mean that Jax does a decent job of protecting Amumu in teamfights.
There is no perfect companion for Amumu that will always be his best synergy. Yet, overall, Jax is a very typical ally for Amumu. By playing on the same side as Amumu, he increases their win rate by 0.9% to 49.9%. This shows that there is not really a strong synergy between Amumu and Jax that results in them performing better together than without each other.
Jax has a greater difficulty than Amumu. That means Amumu players must be very careful when enlisting Jax comrades to fight alongside, as they will need a greater level of skill to be able to cooperate well with you.
Playing alongside, you will likely observe an overall large increase in your team’s capability to deal magic damage. Combined, these champs can deal quite a lot of AP type damage.
In contrast, by bringing Amumu and Jax together, you may not be providing your team a lot of anti-tank damage dealing potential. Plan to have other champs on your team that neutralizes this relative gap in their kit.
Regardless of your Jax ally's ability, you need to focus on maximizing your income, staying alive by avoiding foolish fights, and taking down objectives. If you do this, you will do well, regardless.
To learn all of the intricacies of Amumu to synergize with Jax during both the lane and mid / late game phases of League rounds, you should continue reading to master a few extra lessons on this champion pairing. If you listen to the build and tips displayed here, you will increase your win rate by a lot.
The most important items to focus on in your Amumu and Jax synergy build include Sunfire Aegis, Thornmail, and Liandry's Torment. When Amumu included at least these three pieces in his build, he did significantly better when paired up with Jax than with many other typical builds. In fact, Amumu had an average winrate of 49.9% when synergizing his build and playstyle to Jax with these items in his kit.
To have the highest probability of vanquishing your oponents, you should take the Conqueror, Triumph, Legend: Tenacity, Last Stand, Cheap Shot, and Ultimate Hunter runes from the Precision and Domination rune sets. Of all the runes that we analyzed for this team composition, this blending of runes yielded the greatest win rate. Notably, these runes provided a 49.9% winrate overall.
By default, tips, statistics, and builds on how to synergize Jax with Amumu are presented for all skill levels, merged. If you want to narrow the statistics and builds to an individual skill level, you should use the selection menu earlier in the counter matchup guide.