Killing Tentacles whenever possible will make it much easier to win a fight against Illaoi.
When your spirit gets pulled out, fight back if you can. Dealing damage to Illaoi reduces the spirit's duration.
Avoid grouping up for Leap of Faith to reduce the number of Tentacles available to Illaoi.
The stat comparisons shown on this page clarify some valuable Yuumi against Illaoi counter statistics that may help us distinguish the differences between the pair. Yuumi’s KDA ratio ([kills + assists] / deaths) of NaN is more than Illaoi’s KDA ratio of NaN, showing that Yuumi may be more central to her team's team fighting capacity than Illaoi. This observation is largely caused by the differences in assists.
Yuumi typically has a significantly smaller longest kill spree than her counter does. Commonly, she takes less damage than Illaoi. This is usually reflective of differing health capacities; however, it can also indicate that the champ with higher health has less mobility and thus is not able to flee from additional damage when engaged or poked.
Both League champs are great champions. Both champs have their pros and cons. In the game's current meta, Yuumi usually loses when trying to fight Illaoi, with a 46.4% win rate. As a result, Yuumi makes a bad counter to Illaoi.
While Yuumi does have a lower win rate compared to Illaoi, when on opposite teams, Yuumi also has a lower level of difficulty that makes her a less time consuming champ to pick up and master. You should be very concerned when picking Yuumi into Illaoi.
Moreover, Yuumi also has a very large amount of CC and other utility, a similar amount to Illaoi. This often makes her just as valuable during team fights, especially when facing champions with a lot of burst damage.
While there is not a single best champion for every situation in League of Legends, in Yuumi vs Illaoi matchups, Illaoi is the better champ with a much lower win rate, less champion complexity, and a similar amount of utility to help out your allied champions during teamfights.
Yuumi is a garbage counter for Illaoi. Make sure you focus your actions on increasing your gold and cs and destroying objectives. If you can do that, you should do very well as Yuumi against Illaoi.
To learn all of the intricacies of Yuumi in order to counter Illaoi during both the laning and mid / late game phases of League of Legends, you should keep reading to pick up a few extra tricks and insights into this matchup. If you listen to the build and tips presented here, you should grow your win rate significantly and be closer to League of Legends pro players.
Yuumi usually racks up a lot less CS relative to Illaoi. Champs who on average don't get much CS often don't need much CS to be valuable teammates, such as support champions. They are capable of scaling well off of their skills, stats, and first items alone. Yet, champs with a lot of CS, such as hyper-carries, typically require many items to be effective. In either case, try to surpass the numbers reported on this page to do well.
The ideal items to have in your Yuumi versus Illaoi build include Ardent Censer, Staff of Flowing Water, and Moonstone Renewer. When Yuumi incorporated at least these three pieces in her build, she performed significantly better countering Illaoi than with most other commonly used counter builds. In fact, Yuumi had an average win rate of 46.4% when countering Illaoi with this build.
To have the highest probability of beating Illaoi 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. Of all the runes players chose for Yuumi vs Illaoi clashes, this blending of runes resulted in the highest win rate. Notably, these runes provided a 46.4% winrate overall.
If you would like to see Yuumi x Illaoi tips and builds for a an individual division, please choose one from the selection menu shown above. If viewing for the first time, the stats and build suggestions shown are calculated using all matches played with both champions.