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.
The stat comparisons shown here show some vital Kai'Sa against Vex matchup stats that may help us realize the differences between this pair of champs. For instance, Kai'Sa’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Vex’s ratio of NaN, indicating that Kai'Sa may be more central to her team's team fighting potential than Vex..
Kai'Sa usually has a similar longest killing spree as her counter does. On average, she takes a similar amount of damage to Vex. This often reflects differing health capacities, yet it can also show that the champion with higher HP has less mobility and thus is unable to flee from additional damage when engaged or poked.
Both LoL champions are great. Both champs have their pros and cons. In the game's current meta, Kai'Sa usually loses when trying to fight Vex, with a 46.4% win rate. As a result, Kai'Sa makes a poor counter to Vex.
While Kai'Sa does have a lower winrate compared to Vex, when they face off with one another, Kai'Sa also has a much greater difficulty level that makes her a more challenging character to learn and master. You may get destroyed when picking Kai'Sa into Vex.
Furthermore, Kai'Sa has almost no amount of utility and CC, a similar amount to Vex. This often makes her just as valuable during teamfights, especially when fighting champions with a ton of burst damage.
While there isn't a single best champion in League of Legends, in Kai'Sa vs Vex matchups, Vex is the better champ with a much lower win rate, more champion depth, and a similar amount of utility to help out your allied champions during teamfights.
Kai'Sa is a garbage counter to Vex. Focus your play on increasing your gold income and clearing objectives. If you are able to do that, you should be able to stand on your own as Kai'Sa against Vex.
To learn all of the intricacies of Kai'Sa to counter Vex 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 listen to the build and stats presented above, you will increase your win rate significantly and be closer to League of Legends pro players.
Kai'Sa typically gets a similar amount of CS as Vex. Champs who typically don't get many minion kills often don't require much CS to be valuable teammates, such as support champions. They are capable of scaling properly off of their abilities and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually have to have several high cost items to be effective. In either situation, try to surpass the values displayed on this page to do well.
The most crucial items to have in your Kai'Sa versus Vex build include Nashor's Tooth, Terminus, and Kraken Slayer. When Kai'Sa combined at least these three pieces in her build, she performed significantly better countering Vex than with many other commonly used builds. In fact, Kai'Sa boasted an average win rate of 46.4% battling Vex with these items in her kit.
To have the best probability of coming out on top against Vex as Kai'Sa, you should equip the Hail of Blades, Taste of Blood, Eyeball Collection, Treasure Hunter, Biscuit Delivery, and Magical Footwear runes from the Domination and Inspiration rune sets. Out of all the runes players picked for Kai'Sa vs Vex matchups, this order of runes yielded the highest win rate. Moreover, these runes provided a 46.4% win rate overall.
If you want to see Kai'Sa versus Vex tips and builds for a a particular player tier, feel free to select one from the selection menu above. At first, the stats and guides shown are computed using every round run with both champions.