Gwen can still damage enemies outside her Hallowed Mists, especially with her Ultimate's range.
Some of Gwen's Abilities can apply her passive to multiple enemies, so aim them at groups to get maximum damage and healing.
Always be Attacking - In addition to dealing bonus damage, Gwen's Attacks empower or reset many of her Abilities.
Kai'Sa is very vulnerable to getting outranged by mages and long range carries.
Make sure to place wards in your blind spots so you can see Kai'Sa coming.
Kai'Sa is very good at picking off isolated enemies. Stick together against her.
The stats shown on this page underscore several important Gwen against Kai'Sa counter stats that can help us interpret the differences between the pair. For instance, Gwen’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Kai'Sa’s KDA ratio of NaN, highlighting that Gwen may be more central to her team's team fighting capacity than Kai'Sa..
Gwen typically has a slightly smaller longest kill spree than her opponent does. Commonly, she receives more damage than Kai'Sa. This typically indicates different amounts of tankyness, but it can also imply that the one champion has less agility and thus is not able to kite away from further damage when poked or engaged.
Both League of Legends champs are great. Both champs have their pros and cons. In League's current meta, Gwen usually fairs equally well when facing off against Kai'Sa, with a 50.8% win rate. Thus, Gwen makes an ok counter for Kai'Sa.
While Gwen does have a higher win rate compared to Kai'Sa, when facing one another, Gwen also has a lower difficulty level that makes her a less complex character to learn and master. You still need to be cautious when picking Gwen into Kai'Sa.
Additionally, Gwen has some amount of utility and CC, a similar amount to Kai'Sa. This often makes her just as valuable during teamfights, especially when fighting champions with a ton of burst damage.
While there is not one best champion for every situation in League of Legends, in Gwen vs Kai'Sa matchups, Gwen is the better champ with a similar win rate, less champion complexity, and a similar amount of utility to help out your allies during teamfights.
Gwen is a decent counter for Kai'Sa. You will do well by focussing your gameplay on keeping up your CS and destroying objectives. If you can do that, you should be able to stand on your own as Gwen against Kai'Sa.
If you would like to learn all of the intricacies of Gwen to counter Kai'Sa during both the laning and mid / late game phases of League of Legends, you should continue reading to gather a few extra tips and tricks for this matchup. If you pay attention to the build and stats displayed above, you should grow your win rate by a lot and be closer to League of Legends pro players.
Gwen usually accumulates a similar amount of CS as Kai'Sa. Champs who on average don't get much CS often don't have to have much CS to be effective, such as sup champs. They are capable of scaling properly off of their abilities and first items alone. Yet, champs with a lot of CS, such as hyper-carries, typically need several high cost items to be effective. In either case, try to do better than the numbers reported on this page to do well.
The most important items to prioritize in your Gwen versus Kai'Sa build include Rabadon's Deathcap, Cosmic Drive, and Riftmaker. When Gwen included at least these three pieces in her build, she did much better when facing Kai'Sa than with most other commonly used item sets. In fact, Gwen had an average winrate of 50.8% when playing against Kai'Sa with this counter build.
To have the highest probability of annihilating Kai'Sa as Gwen, Gwen players should take the Conqueror, Presence of Mind, Legend: Alacrity, Last Stand, Biscuit Delivery, and Magical Footwear runes from the Precision and Inspiration rune sets. Out of all the rune sets players chose for Gwen vs Kai'Sa face-offs, this sequence of runes yielded the best win rate. Moreover, these runes gave a 50.8% win rate overall.
By default, tips, statistics, and builds on how to beat Kai'Sa as Gwen are presented for all skill levels, merged. If you want to scope the statistics and builds to a particular division, you should use the selection menu at the top of this page.