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.
Try and keep targets in the range of your Flamespitter. It can deal a lot of damage overtime.
If you are winning a fight you can use your ultimate to wall off an escape path.
Try and pace yourself to stay in the Danger Zone to maximize your effectiveness. It is easy to overheat if you rapidly use your abilities.
The Kassadin Rumble synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Rumble, 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 large worsening in his KDA (ratio of kills and assists to deaths) when paired with Rumble. His KDA went down from NaN to NaN. This drop shows that Rumble helps Kassadin perform not as well in competitive League games. Yet, the small difference shows that this performance change is not very impactful.
When Kassadin plays on the same team as Rumble, he observes a marginal improvement in his full damage dealt. This may signal that Rumble helps provide cover for him to deal more damage or that his presence also helps extend the match's duration. Similarly, when Kassadin is played alongside Rumble on the same team, he usually scores many fewer killing sprees than when he plays without Rumble. This is contrasting evidence that he is worse when playing alongside Rumble.
Moreover, when Kassadin plays with Rumble on the same team, he often takes more damage than when he plays alone. Getting dealt more damage could mean that Rumble does a poor job of protecting Kassadin during team fights.
There is no perfect companion for Kassadin that will always be his #1 ally. Yet, Rumble is a relatively poor teammate for Kassadin. By locking into the same side as Kassadin, he decreases their win rate by -2.2% to 47.8%. This shows that there is a negative synergy between Kassadin and Rumble that allows them to perform not as well together than without each other.
Rumble has a greater difficulty than Kassadin. That means you should be very careful when enlisting Rumble teammates to fight alongside, as they will need a greater level of skill to do well with you.
Fighting alongside, you should observe an overall large increase in your team’s capacity to deal magical damage. Combined, these two are able to dish out a surprising amount of magic type damage.
Although, by pairing Kassadin and Rumble together, you may not be giving your other allies much sustained damage output. We recommend you include other champions on your team that nullifies this relative disparity in their playstyle.
Regardless of your Rumble ally's ability, 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 anyway.
To truly master Kassadin to work well with Rumble during both the lane and mid / late game phases of League of Legends games, you should keep reading to master a few extra lessons on this champion pairing. If you use the build and stats shown here, you should grow your win rate significantly.
The best finished items to use in your Kassadin and Rumble synergy build include Seraph's Embrace, Stormsurge, and Rod of Ages. When Kassadin combined at least these three pieces in his build, he performed much better when fighting alongside Rumble than with many other common item sets. In fact, Kassadin had an average winrate of 47.8% when synergizing his build and playstyle to Rumble with this build.
To have the highest chance of vanquishing your oponents, Kassadin players 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. Out of all the rune builds players chose for Kassadin and Rumble pairings, this combo of runes resulted in the greatest win rate. Moreover, these runes provided a 47.8% winrate overall.
If you need to get Kassadin and Rumble synergy tips and builds for a a specific skill level, feel free to select one from the selection menu shown above. At first, the stats and build suggestions shown are calculated using all matches played with both champions.