A fully charged Vault Breaker will deal double damage. It's great for catching and finishing off fleeing enemies.
Relentless Force does full damage to anyone caught in the shockwave. Use it on minions in lane to hit enemies hiding behind them.
Cease and Desist is a powerful initiation tool, just remember not to get too far ahead of the rest of your team.
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 stats provided here feature several influential Vi against Kayn matchup statistics that can help you explain the differences between the two. Vi’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Kayn’s ratio of NaN, highlighting that Vi may be more central to her team's team fighting capacity than Kayn..
Vi normally has a similar longest killing spree as her matchup does. Typically, she takes less damage than Kayn. This is usually reflective of differing health capacities, but it can also imply that the one champ has less mobility and thus is not able to kite away from additional damage when engaged or poked.
Both League champions are great. Both champs have their strengths, weaknesses, and counters. In the game's current meta, Vi usually wins when playing against Kayn, with a 52.3% win rate. Thus, Vi makes a good counter to Kayn.
While Vi does have a higher win rate compared to Kayn, when they face off with one another, Vi also has a much lower difficulty level that makes her a less challenging character to pick up and master. You don't need to be too worried when picking Vi into Kayn.
Additionally, Vi has almost no amount of utility and CC, a similar amount to Kayn. This makes her just as valuable during teamfights, especially when fighting champions with a lot of burst damage.
While there isn't one best champion in League of Legends, in Vi vs Kayn matchups, Vi is the better champion with a noticably higher win rate, less champion complexity, and a similar amount of utility to help out your team members during late stage team fights.
Vi is an above average counter for Kayn. Focus your strategy on maximizing your gold and cs and taking out objectives. If you can do that, you should do very well as Vi against Kayn.
To learn all of the intricacies of Vi to counter Kayn during both the early game and mid / late game phases of League of Legends, you should keep reading to gather a few extra lessons on this matchup. If you pay attention to the build and tips presented above, you will increase your win rate significantly and be closer to League of Legends pro players.
Vi often picks up a similar amount of CS as Kayn. Champions who on average don't get much CS typically don't have to have 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 large amounts of CS, such as hyper-carries, often need a lot of items to be effective. In either case, try to do better than the numbers displayed here to do well.
The best items to have in your Vi versus Kayn build include Trinity Force, Sundered Sky, and Eclipse. When Vi combined at least these three pieces in her build, she did significantly better against Kayn than with most other commonly used builds. In fact, Vi boasted an average winrate of 52.3% when countering Kayn with this counter build.
To have the greatest likelihood of beating Kayn as Vi, you should use the Hail of Blades, Sudden Impact, Eyeball Collection, Relentless Hunter, Triumph, and Legend: Alacrity runes from the Domination and Precision rune sets. Out of all the rune builds players used for Vi vs Kayn counter picks, this combination of runes yielded the best win rate. Notably, these runes gave a 52.3% win rate overall.
If you would like to see Vi x Kayn tips and counter builds for a a particular rank, feel free to select one from the selection menu shown above. By default, the statistics and build suggestions given are computed using all games run with these champs.