Remember that nearby enemies can see which wall you're in.
Look at the line-up of both your team and the enemy's team when picking your form.
Try to engage him in short bursts instead of going toe-to-toe with him. Preventing him from attacking consecutively drastically lowers his damage output.
Jax can dodge all incoming attacks for a very short amount of time and stuns enemies in melee range when it ends. Wait to strike him until after his dodge is finished.
The stat comparisons shown on this page highlight several strategic Kayn against Jax counter stats that may help you interpret the differences and similarities between these two champions. For instance, Kayn’s KDA ratio ([kills + assists] / deaths) of NaN is better than Jax’s KDA ratio of NaN, demonstrating that Kayn may be more central to his team's team fighting potential than Jax..
Kayn normally has a similar longest killing spree as his counter does. On average, he receives more damage than Jax. This is usually reflective of differing health capacities, but it can also illustrate that the champion with more health has less agility and thus is unable to kite away from further damage when engaged or poked.
Both League champions are great. Both have their strengths, weaknesses, and counters. In League's current meta, Kayn usually fairs equally well when taking on Jax, with a 49.7% win rate. As a result, Kayn makes an ok counter to Jax.
While Kayn does have a lower win rate compared to Jax, when facing one another, Kayn also has a much greater difficulty level that makes him a more complex champ to pick up and master. You should be careful when picking Kayn into Jaxas his relative depth means you may not be able to unleash his full potential without a lot of practice beforehand.
Moreover, Kayn has only a small amount of utility and CC, a similar amount to Jax. This makes her just as valuable during team fights, especially when facing champions with a lot of burst damage.
While there isn't one best champion in League of Legends, in Kayn vs Jax matchups, Jax is the better champion with a similar win rate, more champion depth, and a similar amount of utility to help out your allied champions during late stage team fights.
Kayn is a somewhat poor counter for Jax. You will do well by focussing your play on increasing your gold and cs and clearing objectives. If you can do that, you should be able to stand on your own as Kayn against Jax.
To truly master Kayn to counter Jax during both the early game and mid / late game phases of League of Legends, you should keep reading to pick up a few extra tips and tricks for this matchup. If you listen to the build and suggestions presented above, you will increase your win rate by a lot and be closer to League of Legends pro players.
Kayn typically picks up a lot less CS relative to Jax. Champs who on average don't acquire many minion kills often don't need much CS to be valuable teammates, such as support champions. These kinds of champions are capable of scaling well off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, typically require a lot of items to be effective. In either case, try to surpass the values displayed here to do well.
The best items to focus on in your Kayn versus Jax build include Sterak's Gage, Spear of Shojin, and Death's Dance. When Kayn included at least these three items in his build, he performed much better when fighting Jax than with most other typical builds. In fact, Kayn boasted an average winrate of 49.7% when playing against Jax with these items in his kit.
To have the best likelihood of defeating Jax as Kayn, Kayn players should take the Summon Aery, Nimbus Cloak, Transcendence, Gathering Storm, Sudden Impact, and Relentless Hunter runes from the Sorcery and Domination rune sets. Out of all the rune sets players used for Kayn vs Jax counter picks, this combination of runes resulted in the greatest win rate. Moreover, these runes gave a 49.7% win rate overall.
By default, tips, statistics, and builds on how to beat Jax as Kayn are given for every ranked division. To scope the stats and builds to a distinct skill level, you should use the selection menu at the top of this page.