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.
Be careful about how close you let Viktor get to you. Viktor's control of the battlefield increases with his proximity to his opponent.
Be aware of how many augments Viktor has upgraded by looking at the color of the light on his staff (purple, yellow, blue, red).
The stats shown on this page emphasize several significant Kai'Sa versus Viktor counter stats that can help you figure out the differences and similarities between the two. For instance, Kai'Sa’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Viktor’s KDA ratio of NaN, indicating that Kai'Sa may be more central to her team's team fighting capability than Viktor..
Kai'Sa normally has a slightly larger longest killing spree than her matchup does. Commonly, she receives a similar amount of damage to Viktor. This commonly reflects different amounts of tankyness, but it can also indicate that the one champ has less agility and thus is not able to escape additional damage when poked or engaged.
Both League of Legends champs are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Kai'Sa usually loses when trying to fight Viktor, with a 45.1% win rate. Therefore, Kai'Sa makes a poor counter to Viktor.
While Kai'Sa does have a much lower win rate than Viktor, when facing one another, Kai'Sa also has a lower learning curve that makes her a less complex champion to pick up and master. You should be very concerned when picking Kai'Sa into Viktor.
Additionally, Kai'Sa has almost no amount of CC and other utility, a similar amount to Viktor. This makes her just as valuable during teamfights, especially when trying to counter champions with a ton of burst damage.
While there is not a single best champion for every situation in League of Legends, in Kai'Sa vs Viktor matchups, Viktor is the better champ with a much lower win rate, less champion complexity, and a similar amount of utility to help out your allies during teamfights.
Kai'Sa is a terribly counter for Viktor. You will do well by focussing your actions on keeping up your CS and taking out objectives. If you do that, you should hold your own as Kai'Sa against Viktor.
To learn all of the intricacies of Kai'Sa to counter Viktor during both the laning and mid / late game phases of League of Legends, you should keep reading to learn a few extra lessons on this matchup. If you pay attention to the build and stats shown above, you will grow your win rate by a lot and be closer to League of Legends pro players.
Kai'Sa typically gets a similar amount of CS compared to Viktor. Champions who typically don't acquire much CS usualy don't have to have 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, champs with a lot of CS, such as hyper-carries, often have to have many items to be effective. In either situation, try to surpass the values reported on this page to do well.
The best items to have in your Kai'Sa versus Viktor build include Terminus, Kraken Slayer, and Navori Quickblades. When Kai'Sa included at least these three items in her build, she did much better vs. Viktor than with many other common counter builds. In fact, Kai'Sa boasted an average winrate of 45.1% when playing against Viktor with this build.
To have the greatest probability of coming out on top against Viktor as Kai'Sa, you should take the Lethal Tempo, Presence of Mind, Legend: Bloodline, Coup de Grace, Biscuit Delivery, and Magical Footwear runes from the Precision and Inspiration rune sets. Of all the rune combinations players used for Kai'Sa vs Viktor counterpicks, this combination of runes resulted in the greatest win rate. Moreover, these runes provided a 45.1% winrate overall.
By default, tips, stats, and builds on how to beat Viktor as Kai'Sa are given for all skill levels, merged. To filter the stats and builds to a distinct skill level, you should use the selection menu earlier in the counter matchup guide.