Make sure to buy items that will evolve at least 1 or 2 of your spells.
Work with your teammates to set up your Ultimate and optimize damage with your passive.
Try to catch enemy carries alone to burst them with Icathian Rain.
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 stats shown here show several valuable Kai'Sa vs. Jax matchup statistics that can help you appreciate the differences and similarities between these two champs. For instance, Kai'Sa’s KDA ratio ([kills + assists] / deaths) of NaN is better than Jax’s KDA ratio of NaN, showing that Kai'Sa may be more central to her team's team fighting potential than Jax..
Kai'Sa normally has a similar longest killing spree as her matchup does. On average, she takes less damage than Jax. This is usually reflective of different amounts of tankyness, yet it can also imply that the one champ has less mobility and thus is unable to flee from further harm when engaged or poked.
Both League champions are great. Both have their strengths, weaknesses, and counters. In the game's current meta, Kai'Sa usually loses when facing off against Jax, with a 45.1% win rate. Thus, Kai'Sa makes a poor counter for Jax.
While Kai'Sa does have a much lower win rate than Jax, when facing one another, Kai'Sa also has a greater level of difficulty that makes her a more time consuming character to develop with. You may get destroyed when picking Kai'Sa into Jax.
Furthermore, Kai'Sa has only a small amount of utility and CC, a similar amount to Jax. This often makes her just as valuable during team fights, especially when trying to counter champions with a lot of burst damage.
While there isn't one best champion in League of Legends, in Kai'Sa vs Jax matchups, Jax is the better champ with a much lower win rate, more champion depth, and a similar amount of utility to help out your teammates during team fights.
Kai'Sa is a bad counter to Jax. You will do well by focussing your strategy on increasing your gold income and taking out objectives. If you can do that, you should be able to stand on your own as Kai'Sa against Jax.
To truly master Kai'Sa in order to counter Jax during both the early game and mid / late game phases of League of Legends, you should keep reading to learn a few extra tricks and insights into this matchup. If you pay attention to the build and suggestions shown here, you will grow your win rate significantly and be closer to League of Legends pro players.
Kai'Sa usually racks up a similar amount of CS compared to Jax. Champs who typically don't take much CS often don't need much CS to be effective, such as sup champs. These kinds of champions are able to scale well off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, typically need many items to be effective. In either case, try to exceed the numbers displayed on this page to do well.
The top items to focus on in your Kai'Sa versus Jax build include Nashor's Tooth, Guinsoo's Rageblade, and Zhonya's Hourglass. When Kai'Sa bought at least these three pieces in her build, she performed a lot better vs. Jax than with many other common builds. In fact, Kai'Sa had an average win rate of 45.1% battling Jax with this counter build.
To have the best probability of vanquishing Jax as Kai'Sa, Kai'Sa players should take the Hail of Blades, Taste of Blood, Eyeball Collection, Treasure Hunter, Magical Footwear, and Biscuit Delivery runes from the Domination and Inspiration rune sets. Out of all the rune builds that we analyzed for Kai'Sa vs Jax battles, this order of runes yielded the highest win rate. In fact, these runes averaged a 45.1% winrate overall.
If you would like to see Kai'Sa versus Jax tips and builds for a a particular skill level, feel free to choose one from the selection menu provided above. By default, the statistics and strategies displayed are computed using every game completed with these champs.