It takes 6 spell casts for Kassadin's slow, Force Pulse, to become castable. If he levels up that ability, judiciously use your own skills while laning against him.
Kassadin deals mostly magic damage. If he's doing well consider buying magic resist items like Mercury's Treads and Banshee's Veil.
Each time Kassadin consecutively uses Riftwalk, he pays more and more mana. Keep this in mind as you chase him.
The stats shown here feature several strategic Sett against Kassadin matchup stats that may help us explain the distinctions between the pair. For instance, Sett’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Kassadin’s ratio of NaN, highlighting that Sett may be more central to his team's team fighting potential than Kassadin..
Sett typically has a similar longest kill spree as his matchup does. Commonly, he takes more damage than Kassadin. This commonly reflects differing health capacities; however, it can also indicate that the one champion has less agility and thus is not able to kite away from additional harm when poked or engaged.
Both League champs are great. Both have their strengths, weaknesses, and counters. In League's current meta, Sett usually fairs equally well when taking on Kassadin, with a 50.4% win rate. Therefore, Sett makes an ok counter for Kassadin.
While Sett does have a higher win rate than Kassadin, when they face off with one another, Sett also has a much lower learning curve that makes him a less challenging champion to pick up and master. You still need to be cautious when picking Sett into Kassadin.
Furthermore, Sett also has only a small amount of CC and other utility, a similar amount to Kassadin. This often makes her just as valuable during team fights, especially when trying to counter champions with a lot of burst damage.
While there is not one best champion overall in League of Legends, in Sett vs Kassadin matchups, Sett is the better champ with a similar win rate, less champion complexity, and a similar amount of utility to help out your teammates during late stage team fights.
Sett is a decent counter for Kassadin. You will do well by focussing your tactics on maximizing your CS and destroying objectives. If you do that, you should hold your own as Sett against Kassadin.
To truly master Sett in order to counter Kassadin during both the early game and mid / late game phases of League of Legends, you should keep reading to gather a few extra tips and tricks for this matchup. If you listen to the build and stats displayed here, you should increase your win rate by a lot and be that much closer to League of Legends pro players.
Sett on average racks up a similar amount of CS compared to Kassadin. Champions who typically don't acquire many minion kills usualy don't have to have much CS to be valuable teammates, such as support champions. They are capable of scaling properly off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, often require several high cost items to be effective. In either situation, try to surpass the numbers shown on this page to do well.
The best items to prioritize in your Sett versus Kassadin build include Trinity Force, Titanic Hydra, and Sundered Sky. When Sett combined at least these three pieces in his build, he performed significantly better vs. Kassadin than with many other typical item sets. In fact, Sett boasted an average win rate of 50.4% battling Kassadin with this build.
To have the best likelihood of defeating Kassadin as Sett, you should equip the Lethal Tempo, Triumph, Legend: Alacrity, Last Stand, Second Wind, and Unflinching runes from the Precision and Resolve rune sets. Out of all the rune builds players picked for Sett vs Kassadin counterpicks, this set of runes yielded the best win rate. Moreover, these runes averaged a 50.4% winrate overall.
If you want to view Sett vs Kassadin tips and builds for a an individual player tier, feel free to select one from the selection menu provided above. At first, the statistics and guides given are calculated using all rounds finished with these champs.