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.
Veigar is extremely Mana and Cooldown Reduction dependent. Try buying items with these stats in order to increase the effectiveness of your passive and Baleful Strike.
Veigar is very fragile. It is valuable to select at least one summoner spell that can be used defensively.
Use Event Horizon to increase your chances of landing Dark Matter.
The Kassadin Veigar synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Veigar, 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 Veigar. His KDA decreased from NaN to NaN. This fall shows that Veigar helps Kassadin perform not as well in ranked LoL rounds. Yet, the small difference demonstrates that this performance change is not very impactful.
When Kassadin plays on the same team as Veigar, he observes a small decrease in his total damage dealt. This could signal that Veigar does not provide cover for him to deal more damage or that his presence on the team also helps extend the round's duration. Similarly, when Kassadin is played alongside Veigar on the same team, he usually scores many fewer killing sprees compared to when he plays on his own. This is contrasting evidence that he is worse when playing with Veigar.
Moreover, when Kassadin plays with Veigar on the same side, he on average receives a little more damage than when he plays alone. Taking more damage could indicate that Veigar does a poor job of covering Kassadin during team fights.
There is no perfect champion pairing for Kassadin that will 100% of the time be his best synergy. However, overall, Veigar is a below average companion for Kassadin. By being on the same team as Kassadin, he lowers their win rate by -1.4% to 48.6%. This proves that there is a negative strategic relationship between Kassadin and Veigar that results in them performing worse together than without each other.
Veigar has a lower difficulty than Kassadin. That means Kassadin players don't need to be careful when arranging Veigar comrades to fight alongside, as they will require a relatively low level of skill to be able to play well with you.
Playing alongside, you will likely see an overall large increase in your team’s capability to deal magical damage. Combined, these two are able to dish out a surprising amount of magic type damage.
In contrast, by aligning Kassadin and Veigar together, you may not be giving your other allies enough anti-tank damage dealing potential. We recommend you have other champs on your team that fills this gap in their capabilities.
Regardless of your Veigar ally's ability, you should focus on maximizing your gold income, outlasting your enemies, and taking down objectives. If you heed this simple advice, you will do well anyway.
To learn all of the intricacies of Kassadin in order to work well with Veigar during both the laning and mid / late game phases of League of Legends matches, you should keep reading to master a few extra tips and tricks for this champion pairing. If you mind the build and stats presented above, you will increase your win rate significantly.
The ideal finished items to focus on in your Kassadin and Veigar synergy build consist of Seraph's Embrace, Rabadon's Deathcap, and Rod of Ages. When Kassadin combined at least these three items in his build, he performed a lot better when fighting alongside Veigar than with many other commonly used builds. In fact, Kassadin had an average win rate of 48.6% when playing alongside Veigar with this build.
To have the best chance of beating your oponents, you should use 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 runes that we analyzed for Kassadin and Veigar pairings, this combo of runes yielded the highest win rate. Notably, these runes gave a 48.6% winrate overall.
If you want to get Kassadin with Veigar synergy tips and builds for a a particular skill level, please choose one from the selection menu provided above. By default, the stats and guides given are calculated using every match with data with both champions.