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.
Consider playing a bit more cautiously around Kennen when you have a Mark of the Storm debuff. If he hits you with 3 Marks of the Storm, you will get stunned.
Kennen is flimsy by nature - turn and attack him if he gets careless with Lightning Rush.
The stat comparisons provided here emphasize some important Kassadin against Kennen matchup stats that may help you interpret the differences between the pair. Kassadin’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Kennen’s ratio of NaN, showing that Kassadin may be more central to his team's team fighting capability than Kennen..
Kassadin often has a slightly larger longest kill spree than his matchup does. On average, he takes more damage than Kennen. This is usually reflective of different amounts of tankyness, yet it can also hint that the champ with higher health has less agility and thus is unable to flee from additional damage when poked or engaged.
Both League champions are great champions. Both have their strengths, weaknesses, and counters. In League's current meta, Kassadin usually wins when facing off against Kennen, with a 53.9% win rate. As a result, Kassadin makes a great counter for Kennen.
While Kassadin does have a higher win rate than Kennen, when they face off with one another, Kassadin also has a much greater level of difficulty that makes him a more difficult champion to pick up and master. You don't need to be too worried when picking Kassadin into Kennenas his relative depth means you may not be able to reach his full potential without a significant amount of practice beforehand.
Additionally, Kassadin also has some amount of utility and CC, a similar amount to Kennen. This makes her just as valuable during team fights, especially when fighting champions with a ton of burst damage.
While there is not a single best champion overall in League of Legends, in Kassadin vs Kennen matchups, Kassadin is the better champ with a noticably higher win rate, more champion depth, and a similar amount of utility to help out your team members during team fights.
Kassadin is a great counter for Kennen. You will do well by focussing your gameplay on increasing your CS and taking out objectives. If you do that, you should hold your own as Kassadin against Kennen.
If you would like to truly master Kassadin in order to counter Kennen during both the early game and mid / late game phases of League of Legends, you should keep reading to gather a few extra lessons on this matchup. If you listen to the build and stats displayed above, you will grow your win rate by a lot and be that much closer to League of Legends pro players.
Kassadin most often gets a similar amount of CS compared to Kennen. Champs who on average don't take much CS often don't have to have much CS to be effective, such as support champions. They are capable of scaling well off of their abilities and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, often need several high cost items to be effective. In either case, try to surpass the numbers reported here to do well.
The top items to prioritize in your Kassadin versus Kennen build include Seraph's Embrace, Rabadon's Deathcap, and Rod of Ages. When Kassadin bought at least these three pieces in his build, he did a lot better when facing Kennen than with many other common builds. In fact, Kassadin boasted an average win rate of 53.9% when countering Kennen with this build.
To have the best chance of vanquishing Kennen as Kassadin, 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. Out of all the rune sets that we analyzed for Kassadin vs Kennen counters, this composite of runes resulted in the best win rate. Notably, these runes provided a 53.9% win rate overall.
If you would like to view Kassadin vs Kennen tips and counter stats for a a particular skill level, feel free to select one from the selection menu shown above. By default, the statistics and build suggestions displayed are calculated using all rounds run with both champs.