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.
Make the most out of your Icathian Surprise.
Use Void Ooze to set up a perfect Living Artillery.
Kog'Maw can outrange most champions with his Bio-Arcane Barrage ability.
The Kassadin Kog'Maw synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Kog'Maw, 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 Kog'Maw. His KDA went down from NaN to NaN. This worsening shows that Kog'Maw helps Kassadin perform worse in competitive League matches. Yet, the small difference shows that this performance change is not very impactful.
When Kassadin is paired with Kog'Maw, he gets a little increase in his complete damage output. This could signal that Kog'Maw supports by providing protection for him to deal more damage or that his support also helps extend the round's duration. Similarly, when Kassadin is played together with Kog'Maw 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 Kog'Maw.
Additionally, when Kassadin plays with Kog'Maw on the same side, he typically receives a little more damage than when he fights alone. Receiving more damage may indicate that Kog'Maw does a poor job of protecting Kassadin during teamfights.
There is no universally accepted best champion pairing for Kassadin that will always be his #1 synergy. Yet, Kog'Maw is a below average companion for Kassadin. By being on the same side as Kassadin, he lowers their win rate by -2.7% to 47.3%. This clearly indicates that there is a harmful bond between Kassadin and Kog'Maw that allows them to perform worse together than alone.
Kog'Maw has a lower difficulty than Kassadin. That means Kassadin players don't need to be very careful when arranging Kog'Maw allies to go into battle on the same side as, as they will have to have a lower level of skill to do well with you.
Fighting alongside, Kassadin players should expect to see an overall large increase in your team’s ability to deal magical damage. Together, these champions are able to dish out a surprising amount of magic type damage.
Conversely, by aligning Kassadin and Kog'Maw together, you probably will not be giving your side very much engage potential. Plan to pick other champions on your team that offsets this gap in their kit.
Regardless of your Kog'Maw ally's skill level, you should focus on increasing your gold income, warding to avoid ambushes, and taking down objectives. If you do this, you will do well, regardless.
To learn all of the intricacies of Kassadin in order to pair well with Kog'Maw during both the lane and mid / late game phases of LoL matches, you should continue reading to learn a few extra tricks and insights into this champion pairing. If you pay attention to the build and suggestions shown above, you will increase your win rate by a lot.
The ideal finished items to build first in your Kassadin and Kog'Maw synergy build consist of Seraph's Embrace, Rabadon's Deathcap, and Rod of Ages. When Kassadin used at least these three pieces in his build, he did significantly better as an ally of Kog'Maw than with most other commonly used item sets. In fact, Kassadin had an average winrate of 47.3% helping carry Kog'Maw with these items in his kit.
To have the greatest probability of vanquishing your oponents, Kassadin players should use the Fleet Footwork, Presence of Mind, Legend: Tenacity, Coup de Grace, Overgrowth, and Second Wind runes from the Precision and Resolve rune sets. Out of all the rune sets players chose for this team composition, this mixture of runes yielded the top win rate. Notably, these runes provided a 47.3% winrate overall.
By default, tips, stats, and builds on how to team up Kog'Maw with Kassadin are given for all ranked divisions combined. To scope the statistics and builds to an individual skill level, you should use the selection menu above.