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 to knock enemies back into your towers with Explosive Cask.
Try to combo Body Slam with Explosive Cask to set up kills for your team.
The damage reduction from Drunken Rage is applied when you start drinking, try to use it when you see damage coming your way.
The Kassadin Gragas synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Gragas, 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 Gragas. His KDA decreased from NaN to NaN. This negative change shows that Gragas helps Kassadin perform poorer in competitive LoL matches. Yet, the small difference indicates that this performance change is not very impactful.
When Kassadin is paired with Gragas, he sees a little drop in his full damage output. This may demonstrate that Gragas does not support by providing cover for him to deal more damage or that his presence on the team also helps extend the game's duration. Similarly, when Kassadin is played with Gragas on the same side, he usually scores many fewer killing sprees compared to when he plays alone. This is contrasting evidence that he is worse when playing with Gragas.
Additionally, when Kassadin plays with Gragas on the same team, he often receives a little less damage than when he plays alone. Getting dealt not as much damage could indicate that Gragas does a decent job of covering Kassadin during team fights.
There is no universally accepted best champion pairing for Kassadin that will no matter what be his #1 ally. Yet, overall, Gragas is a relatively poor teammate for Kassadin. By locking into the same team as Kassadin, he drops their win rate by -1.8% to 48.2%. This clearly indicates that there is a harmful strategic relationship between Kassadin and Gragas that results in them performing not as well together than without each other.
Gragas has a much lower diffuclty than Kassadin. That means Kassadin players don't need to be very careful when arranging Gragas teammates to play with, as they will require a much lower level of skill to be able to work well with you.
When playing cooperatively, Kassadin players should expect to observe an overall large increase in your team’s capacity to to do a lot of AP damage. Together, these two can blast through enemies with magic damage.
Conversely, by aligning Kassadin and Gragas together, you probably will not be giving your other teammates enough attack damage. We recommend you bring other champs on your team that neutralizes this gap in this pairing's capabilities.
Regardless of the ability of your Gragas ally, you should focus on increasing your gold income, staying alive by avoiding foolish fights, and taking down objectives. If you heed this simple advice, you will do well, regardless.
If you would like to truly master Kassadin in order to work well with Gragas during both the early game and mid / late game phases of League, you should keep reading to gather a few extra lessons on this champion pairing. If you pay attention to the build and tips presented above, you will grow your win rate significantly.
The best items to get in your Kassadin and Gragas synergy build consist of Seraph's Embrace, Rabadon's Deathcap, and Rod of Ages. When Kassadin bought at least these three items in his build, he performed a lot better when fighting alongside Gragas than with many other commonly used builds. In fact, Kassadin had an average winrate of 48.2% when playing alongside Gragas with this build.
To have the greatest probability of annihilating 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 combinations players picked for this team composition, this mix of runes yielded the best win rate. Moreover, these runes averaged a 48.2% win rate overall.
By default, tips, stats, and builds on how to pair Gragas with Kassadin are displayed for all skill levels, merged. To filter the statistics and builds to a distinct skill level, you can use the selection menu above.