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.
Lead your enemy when targeting with Noxious Blast to ensure the hit.
Use Twin Fang on poisoned stationary targets like monsters and units stunned by her Petrifying Gaze for maximum damage.
The Amumu Cassiopeia synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Cassiopeia, 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 Cassiopeia. His KDA fell from NaN to NaN. This fall shows that Cassiopeia helps Amumu perform not as well in ranked League of Legends games. Yet, the small difference indicates that this performance change is only marginal.
When Amumu tries to synergize with Cassiopeia, he gets a small increase in his complete damage dealt. This difference could demonstrate that Cassiopeia supports by providing cover for him to deal more damage or that her presence on the team also helps increase the round's duration. Similarly, when Amumu is played together with Cassiopeia on the same team, he usually scores many fewer killing sprees than when he plays alone. This is contrasting evidence that he is worse when playing with Cassiopeia.
Moreover, when Amumu plays with Cassiopeia on the same side, he typically receives a little more damage than when he fights alone. Getting dealt more damage may indicate that Cassiopeia does a poor job of protecting Amumu in team fights.
There is no top champion pairing for Amumu that will always be his ideal teammate. However, overall, Cassiopeia is a superb ally for Amumu. By being on the same team as Amumu, she increases their win rate by 3.1% to 52.1%. This demonstrates that there is a very strong bond between Amumu and Cassiopeia that results in them performing at the top of their game together than without each other.
Cassiopeia has a much greater difficulty compared to Amumu. That means you should be very careful when arranging Cassiopeia comrades to go into battle on the same side as, as they will require a much greater level of skill to cooperate well with you.
Playing together, you will likely see an overall large increase in your team’s ability to deal magical damage. Combined, these champions can blast through enemies with magic damage.
Conversely, by grouping Amumu and Cassiopeia together, you probably will not be giving your side enough sustained damage output. We recommend you bring other champs on your team that helps cover this relative gap in this pairing's kit.
Regardless of the skill of your Cassiopeia ally, you need to focus on increasing your income, warding to avoid ambushes, and taking down objectives. If you follow these simple suggestions, you should do well anyway.
If you would like to truly master Amumu to pair well with Cassiopeia during both the lane and mid / late game phases of League of Legends games, you should continue reading to gather additional lessons on this champion pairing. If you listen to the build and stats presented above, you will grow your win rate by a lot.
The most important items to build first in your Amumu and Cassiopeia synergy build consist of Sunfire Aegis, Thornmail, and Jak'Sho, The Protean. When Amumu incorporated at least these three pieces in his build, he did a lot better when fighting alongside Cassiopeia than with many other commonly used item sets. In fact, Amumu had an average winrate of 52.1% when synergizing his build and playstyle to Cassiopeia with this build.
To have the best probability of crushing your oponents, Amumu players 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 rune builds we have analyed for this team composition, this mix of runes resulted in the greatest win rate. In fact, these runes averaged a 52.1% winrate overall.
By default, tips, stats, and builds on how to synergize Cassiopeia with Amumu are shown for all skill levels, merged. If you want to scope the statistics and builds to a distinct division, you can use the selection menu earlier in the counter matchup guide.