Make sure to buy items that will evolve at least 1 or 2 of your spells.
Try to catch enemy carries alone to burst them with Icathian Rain.
Work with your teammates to set up your Ultimate and optimize damage with your passive.
Spread out when you see Sona so she can't make your entire team dance.
Kill Sona first, as she will heal up her team if left alone for too long.
The stat comparisons provided here clarify several strategic Kai'Sa against Sona matchup statistics that can help you interpret the differences between the two. As an example, Kai'Sa’s KDA ratio ([kills + assists] / deaths) of NaN is more than Sona’s ratio of NaN, demonstrating that Kai'Sa may be more central to her team's team fighting effectiveness than Sona. This observation is in large part a result of the difference in kills.
Kai'Sa often has a much larger longest kill spree than her matchup does. On average, she receives a similar amount of damage to Sona. This is usually reflective of differing health capacities, but it can also hint that the champ with more health has less mobility and thus is unable to escape further damage when poked or engaged.
Both LoL champs are great champions. Both champs have their pros and cons. In League's current meta, Kai'Sa usually loses when facing off against Sona, with a 44.2% win rate. Therefore, Kai'Sa makes a bad counter for Sona.
While Kai'Sa does have a much lower win rate compared to Sona, 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 should be very concerned when picking Kai'Sa into Sona.
Furthermore, Kai'Sa also has almost no amount of utility and CC, a similar amount to Sona. This often makes her just as valuable during team fights, 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 Sona matchups, Sona 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 bad counter to Sona. Focus your play on increasing your gold income and clearing objectives. If you are able to do that, you should do very well as Kai'Sa against Sona.
To truly master Kai'Sa in order to counter Sona during both the lane and mid / late game phases of League of Legends, you should continue reading to gather a few extra tricks and insights into this matchup. If you listen to the build and suggestions displayed here, you will grow your win rate by a lot and be closer to League of Legends pro players.
Kai'Sa often picks up much more CS relative to Sona. Champs who on average don't get much CS usualy don't need much CS to be valuable teammates, such as sup champs. These kinds of champions are able to scale properly off of their skills, stats, and first items alone. Yet, champs with a lot of CS, such as hyper-carries, usually need a lot of items to be effective. In either situation, try to do better than the numbers reported on this page to do well.
The top items to prioritize in your Kai'Sa versus Sona build consist of Kraken Slayer, Mortal Reminder, and The Collector. When Kai'Sa combined at least these three pieces in her build, she performed significantly better against Sona than with many other typical item sets. In fact, Kai'Sa boasted an average win rate of 44.2% battling Sona with these items in her kit.
To have the best chance of defeating Sona as Kai'Sa, Kai'Sa players should equip the Hail of Blades, Taste of Blood, Eyeball Collection, Treasure Hunter, Presence of Mind, and Legend: Bloodline runes from the Domination and Precision rune sets. Out of all the rune builds players chose for Kai'Sa vs Sona LoL games, this order of runes yielded the greatest win rate. In fact, these runes provided a 44.2% winrate overall.
By default, tips, stats, and builds on how to beat Sona as Kai'Sa are displayed for all ranked divisions combined. To scope the stats and builds to a specific player tier, you should use the selection menu located above.