Katarina's abilities deal magic damage, so even if she's building Attack Damage items, get magic resistance to counter her.
Try to save a disable for when Katarina uses her Death Lotus.
The stats shown on this page emphasize some influential Yuumi vs. Katarina counter stats that can help us understand the differences between these two champions. Yuumi’s KDA ratio ([kills + assists] / deaths) of NaN is more than Katarina’s KDA ratio of NaN, highlighting that Yuumi may be more central to her team's team fighting capability than Katarina. This observation is in large part caused by the differences in assists.
Yuumi often has a significantly smaller longest kill spree than her foe does. On average, she receives less damage than Katarina. This is usually reflective of differing health capacities, yet it can also imply that the champion with increased HP has less mobility and thus is not able to flee from further damage when poked or engaged.
Both League champions are great champions. Both champs have their pros and cons. In League's current meta, Yuumi usually fairs equally well when taking on Katarina, with a 50.6% win rate. As a result, Yuumi makes an ok counter for Katarina.
While Yuumi does have a higher winrate compared to Katarina, when they face off with one another, Yuumi also has a much lower difficulty level that makes her a less difficult champion to learn and master. You still need to be cautious when picking Yuumi into Katarina.
Furthermore, Yuumi also has a very large amount of CC and other utility, a similar amount to Katarina. This often makes her just as valuable during teamfights, especially when fighting champions with a lot of burst damage.
While there is not one best champion in League of Legends, in Yuumi vs Katarina matchups, Yuumi is the better champion with a similar win rate, less champion complexity, and a similar amount of utility to help out your team members during team fights.
Yuumi is a decent counter to Katarina. You will do well by focussing your tactics on keeping up your gold and cs and destroying objectives. If you can do that, you should hold your own as Yuumi against Katarina.
To truly master Yuumi to counter Katarina during both the early game and mid / late game phases of League of Legends, you should keep reading to gather a few extra tricks and insights into this matchup. If you listen to the build and suggestions shown above, you should grow your win rate by a lot and be that much closer to League of Legends pro players.
Yuumi on average picks up a lot less CS as Katarina. Champions who on average don't earn many minion kills often don't need much CS to be valuable teammates, such as sup champs. These kinds of champions are capable of scaling well off of their abilities and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, usually have to have many items to be effective. In either case, try to do better than the values shown here to do well.
The most important items to have in your Yuumi versus Katarina build include Moonstone Renewer, Chemtech Putrifier, and Staff of Flowing Water. When Yuumi included at least these three items in her build, she did a lot better vs. Katarina than with many other commonly used builds. In fact, Yuumi had an average winrate of 50.6% battling Katarina with this build.
To have the greatest chance of vanquishing Katarina as Yuumi, Yuumi players should equip the Summon Aery, Manaflow Band, Transcendence, Gathering Storm, Presence of Mind, and Cut Down runes from the Sorcery and Precision rune sets. Out of all the rune builds that we analyzed for Yuumi vs Katarina face-offs, this mixture of runes resulted in the greatest win rate. Notably, these runes averaged a 50.6% winrate overall.
If you need to see Yuumi x Katarina tips and counter stats for a an individual player tier, please select one from the selection menu displayed above. At first, the statistics and build suggestions given are computed using every match completed with these champs.