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 here underscore some valuable Yuumi against Kayn counter statistics that may help you explain the distinctions between this set of champions. As an example, Yuumi’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Kayn’s ratio of NaN, indicating that Yuumi may be more central to her team's team fighting capacity than Kayn. This observation is in large part caused by the differences in assists.
Yuumi typically has a significantly smaller longest killing spree than her enemy does. Typically, she takes less damage than Kayn. This often reflects different amounts of tankyness, yet it can also indicate that the champion with higher health has less agility and thus is not able to kite away from further damage when poked or engaged.
Both League champions are great champions. Both have their pros and cons. In the game's current meta, Yuumi usually loses when trying to fight Kayn, with a 46.3% win rate. As a result, Yuumi makes a bad counter for Kayn.
While Yuumi does have a lower win rate than Kayn, when they face off with one another, Yuumi also has a much lower level of difficulty that makes her a less challenging character to learn. You may get destroyed when picking Yuumi into Kayn.
Additionally, Yuumi has a very large amount of utility and CC, 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 isn't one best champion for every situation in League of Legends, in Yuumi vs Kayn matchups, Kayn is the better champion with a much lower win rate, less champion complexity, and a similar amount of utility to help out your allied champions during team fights.
Yuumi is a trash counter to Kayn. Focus your tactics on increasing your gold and cs and clearing objectives. If you are able to do that, you should be able to stand on your own as Yuumi against Kayn.
If you would like to learn all of the intricacies of Yuumi to counter Kayn during both the early game and mid / late game phases of League of Legends, you should keep reading to pick up a few extra tips and tricks for this matchup. If you mind the build and suggestions displayed here, you should grow your win rate significantly and be that much closer to League of Legends pro players.
Yuumi usually picks up less CS compared to Kayn. Champs who typically don't take much CS usualy don't require much CS to be effective, such as support champions. These kinds of champions are capable of scaling well off of their abilities and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually need several high cost items to be effective. In either case, try to surpass the values shown here to do well.
The top items to use in your Yuumi versus Kayn build include Ardent Censer, Imperial Mandate, and Moonstone Renewer. When Yuumi bought at least these three pieces in her build, she did a lot better when facing Kayn than with most other commonly used counter builds. In fact, Yuumi had an average winrate of 46.3% battling Kayn with this build.
To have the greatest probability of crushing Kayn as Yuumi, you should use the Summon Aery, Manaflow Band, Transcendence, Scorch, Font of Life, and Revitalize runes from the Sorcery and Resolve rune sets. Out of all the rune sets players chose for Yuumi vs Kayn matchups, this combination of runes yielded the highest win rate. In fact, these runes provided a 46.3% win rate overall.
By default, tips, statistics, and builds on how to beat Kayn as Yuumi are displayed for every ranked division. To scope the stats and builds to an individual rank, you can use the selection menu located at the top of this page.