Janna's at her strongest when buffing another ally. If you can harass her ally, it will weaken her ability to fight you.
Save an interrupt ability for when Janna uses her ultimate.
Listen for the charge up sound on Howling Gale in case Janna is trying to hit you with it from off screen or from brush.
The stat comparisons provided here feature some influential Lillia versus Janna matchup stats that can help us distinguish the distinctions between the two. As an example, Lillia’s KDA ratio ([kills + assists] / deaths) of NaN is more than Janna’s KDA ratio of NaN, highlighting that Lillia may be more central to her team's team fighting capability than Janna. This observation is largely a result of the difference in kills.
Lillia normally has a much larger longest killing spree than her enemy does. Commonly, she takes more damage than Janna. This is usually reflective of different amounts of tankyness, but it can also show that the champion with higher HP has less mobility and thus is not able to escape further damage when poked or engaged.
Both LoL champions are great champions. Both champs have their pros and cons. In the game's current meta, Lillia usually wins when playing against Janna, with a 52.4% win rate. Thus, Lillia makes a good counter for Janna.
While Lillia does have a higher win rate than Janna, when on opposite teams, Lillia also has a greater level of difficulty that makes her a more challenging champ to pick up and master. You should be be fine when picking Lillia into Jannaas her relative depth means that you may not be able to unleash her full potential without a lot of practice beforehand.
Additionally, Lillia has some amount of utility and CC, a similar amount to Janna. This makes her just as valuable during team fights, especially when fighting champions with a lot of burst damage.
While there is not a single best champion for every situation in League of Legends, in Lillia vs Janna matchups, Lillia is the better champion with a noticably higher win rate, more champion depth, and a similar amount of utility to help out your allied champions during late stage team fights.
Lillia is a good counter for Janna. Focus your actions on maximizing your CS and clearing objectives. If you do that, you should do very well as Lillia against Janna.
To truly master Lillia in order to counter Janna during both the lane and mid / late game phases of League of Legends, you should continue reading to learn a few extra tips and tricks for this matchup. If you pay attention to the build and stats displayed above, you should increase your win rate by a lot and be closer to League of Legends pro players.
Lillia typically picks up more CS as Janna. Champs who on average don't get much CS typically don't require much CS to be effective, such as support champions. They are able to scale well off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually require several high cost items to be effective. In either case, try to exceed the numbers reported here to do well.
The most crucial items to prioritize in your Lillia versus Janna build include Zhonya's Hourglass, Cosmic Drive, and Riftmaker. When Lillia included at least these three pieces in her build, she performed a lot better when fighting Janna than with most other typical item sets. In fact, Lillia had an average win rate of 52.4% battling Janna with this counter build.
To have the best chance of defeating Janna as Lillia, you should equip the Conqueror, Triumph, Legend: Tenacity, Coup de Grace, Cosmic Insight, and Magical Footwear runes from the Precision and Inspiration rune sets. Of all the rune combinations players used for Lillia vs Janna face-offs, this mixture of runes yielded the highest win rate. Moreover, these runes gave a 52.4% winrate overall.
By default, tips, stats, and builds on how to beat Janna as Lillia are presented for every ranked division. If you want to narrow the statistics and builds to a specific division, you should use the selection menu earlier in the counter matchup guide.