Timing Janna's ultimate can push enemies away from a wounded ally or even separate enemies.
Eye of the Storm can be used on allied turrets.
Quickly firing a Howling Gale without the charge up can be used to heavily disable the other team.
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 stats provided here feature some important Janna against Illaoi matchup stats that may help us distinguish the distinctions between this pair of champs. For instance, Janna’s KDA ratio ([kills + assists] / deaths) of NaN is better than Illaoi’s ratio of NaN, highlighting that Janna may be more central to her team's team fighting capability than Illaoi. This observation is largely caused by the differences in assists.
Janna normally has a significantly smaller longest killing spree than her matchup does. On average, she receives less damage than Illaoi. This typically indicates differing health capacities, yet it can also show that the one champion has less agility and thus is not able to kite away from additional harm when engaged or poked.
Both League champions are great. Both have their strengths, weaknesses, and counters. In League's current meta, Janna usually fairs equally well when playing against Illaoi, with a 49.5% win rate. Therefore, Janna makes an ok counter for Illaoi.
While Janna does have a lower winrate compared to Illaoi, when on opposite teams, Janna also has a much greater level of difficulty that makes her a more complex character to pick up and master. You still need to be cautious when picking Janna into Illaoias her relative depth means you may not be able to unleash her full potential without a significant amount of practice beforehand.
Furthermore, Janna has a great deal of CC and other utility, a similar amount to Illaoi. This makes her just as valuable during team fights, especially when fighting champions with a lot of burst damage.
While there isn't one best champion overall in League of Legends, in Janna vs Illaoi matchups, Illaoi is the better champ with a similar win rate, more champion depth, and a similar amount of utility to help out your teammates during late stage team fights.
Janna is a somewhat poor counter for Illaoi. You will do well by focussing your actions on increasing your CS and destroying objectives. If you can do that, you should hold your own as Janna against Illaoi.
If you would like to truly master Janna in order to counter Illaoi during both the early game and mid / late game phases of League of Legends, you should continue reading to learn a few extra lessons on this matchup. If you listen to the build and tips presented above, you should increase your win rate by a lot and be closer to League of Legends pro players.
Janna typically gets a lot less CS relative to Illaoi. Champions who typically don't acquire much CS usualy don't need much CS to be valuable teammates, such as support champions. These kinds of champions are capable of scaling properly off of their skills, stats, and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, usually require many items to be effective. In either case, try to surpass the values displayed here to do well.
The best items to use in your Janna versus Illaoi build include Shurelya's Battlesong, Dream Maker, and Staff of Flowing Water. When Janna included at least these three items in her build, she did a lot better vs. Illaoi than with most other commonly used item sets. In fact, Janna boasted an average winrate of 49.5% when playing against Illaoi with this counter build.
To have the highest chance of beating Illaoi as Janna, Janna players should take the Summon Aery, Manaflow Band, Celerity, Scorch, Eyeball Collection, and Relentless Hunter runes from the Sorcery and Domination rune sets. Of all the runes players used for Janna vs Illaoi counter picks, this blending of runes resulted in the highest win rate. In fact, these runes provided a 49.5% win rate overall.
By default, tips, stats, and builds on how to beat Illaoi as Janna are presented for all skill levels, merged. To scope the stats and builds to a specific player tier, you may use the selection menu earlier in the counter matchup guide.