You can use Comet of Legend's flight to grow Starsurge to massive proportions.
Comet of Legend allows you to move quickly around the map; use it to put pressure on other lanes.
Save Voice of Light to use as a defense against melee opponents if you need to - otherwise, use its slow to start a fight at long range.
When Kayn is in terrain near you, you will get a visual warning on the edge of the terrain he's in.
Umbral Trespass requires Kayn to damage a target first. Try to dodge Blade's Reach to deny him a long range cast of Umbral Trespass.
Damage Kayn while he's in Shadow Step to shorten its duration, or apply hard crowd control (stun, charm, knockup, etc) to end Shadow Step immediately.
The stat comparisons shown on this page highlight several valuable Aurelion Sol vs. Kayn counter stats that can help you interpret the differences between the pair. As an example, Aurelion Sol’s KDA ratio ([kills + assists] / deaths) of NaN is more than Kayn’s ratio of NaN, indicating that Aurelion Sol may be more central to his team's team fighting capacity than Kayn..
Aurelion Sol often has a similar longest killing spree as his foe does. Commonly, he receives less damage than Kayn. This typically indicates differing health capacities, yet it can also illustrate that the one champion has less agility and thus is unable to flee from further harm when engaged or poked.
Both LoL champs are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Aurelion Sol usually loses when facing off against Kayn, with a 48.5% win rate. Thus, Aurelion Sol makes a bad counter for Kayn.
While Aurelion Sol does have a lower winrate than Kayn, when on opposite teams, Aurelion Sol also has a lower learning curve that makes him a less complex character to pick up and master. You should be careful when picking Aurelion Sol into Kaynas his relative depth means you may not be able to reach his full potential without a significant amount of practice beforehand.
Furthermore, Aurelion Sol also has almost no amount of CC and other utility, a similar amount to Kayn. This makes her just as valuable during teamfights, especially when trying to counter champions with a lot of burst damage.
While there is not one best champion overall in League of Legends, in Aurelion Sol vs Kayn matchups, Kayn is the better champ with a lower win rate, less champion complexity, and a similar amount of utility to help out your teammates during team fights.
Aurelion Sol is a somewhat poor counter to Kayn. Focus your actions on keeping up your gold and cs and taking out objectives. If you do that, you should hold your own as Aurelion Sol against Kayn.
If you would like to truly master Aurelion Sol to counter Kayn during both the lane and mid / late game phases of League of Legends, you should continue reading to pick up a few extra tricks and insights into this matchup. If you listen to the build and tips presented above, you will increase your win rate significantly and be that much closer to League of Legends pro players.
Aurelion Sol often accumulates much more CS as Kayn. Champions who typically don't earn many minion kills typically don't have to have much CS to be effective, such as support champions. They are able to scale well off of their skills, stats, and first items alone. Yet, champs with a lot of CS, such as hyper-carries, often require several high cost items to be effective. In either case, try to exceed the numbers displayed here to do well.
The top items to prioritize in your Aurelion Sol versus Kayn build consist of Seraph's Embrace, Rylai's Crystal Scepter, and Shadowflame. When Aurelion Sol included at least these three pieces in his build, he did a lot better versus Kayn than with many other commonly used builds. In fact, Aurelion Sol had an average winrate of 48.5% when countering Kayn with this counter build.
To have the best likelihood of beating Kayn as Aurelion Sol, you should use the Arcane Comet, Manaflow Band, Transcendence, Gathering Storm, Magical Footwear, and Minion Dematerializer runes from the Sorcery and Inspiration rune sets. Of all the runes players used for Aurelion Sol vs Kayn counters, this composite of runes yielded the best win rate. In fact, these runes provided a 48.5% win rate overall.
If you want to get Aurelion Sol versus Kayn tips and matchup stats and build suggestions for a a distinct division, please select one from the selection menu above. At first, the stats and guides given are calculated using all matches completed with these champions.