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 stats shown here highlight several important Renata Glasc against Janna counter stats that may help you understand the distinctions between this set of champs. As an example, Renata Glasc’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Janna’s ratio of NaN, highlighting that Renata Glasc may be more central to their team's team fighting capability than Janna..
Renata Glasc normally has a similar longest kill spree as their counter does. On average, they takes a similar amount of damage to Janna. This often reflects differing health capacities, but it can also illustrate that the one champ has less agility and thus is unable to flee from additional harm when poked or engaged.
Both LoL champs are great. Both have their strengths, weaknesses, and counters. In the game's current meta, Renata Glasc usually loses when trying to fight Janna, with a 48.4% win rate. As a result, Renata Glasc makes a bad counter to Janna.
While Renata Glasc does have a lower winrate than Janna, when facing one another, Renata Glasc also has a greater learning curve that makes them a more challenging character to develop with. You still need to be cautious when picking Renata Glasc into Jannaas their relative depth means you may not be able to reach their full potential without a lot of practice beforehand.
Additionally, Renata Glasc also has some amount of CC and other utility, a similar amount to Janna. This makes her just as valuable during team fights, especially when facing champions with a lot of burst damage.
While there isn't a single best champion for every situation in League of Legends, in Renata Glasc vs Janna matchups, Janna is the better champ with a lower win rate, more champion depth, and a similar amount of utility to help out your allied champions during late stage team fights.
Renata Glasc is a somewhat poor counter to Janna. You will do well by focussing your tactics on increasing your CS and taking out objectives. If you do that, you should be able to stand on your own as Renata Glasc against Janna.
To truly master Renata Glasc to counter Janna during both the early game and mid / late game phases of League of Legends, you should continue reading to gather a few extra tricks and insights into this matchup. If you listen to the build and stats presented above, you will grow your win rate by a lot and be that much closer to League of Legends pro players.
Renata Glasc often racks up a similar amount of CS compared to Janna. Champs who on average don't earn much CS typically don't require much CS to be valuable teammates, such as support champions. These kinds of champions are able to scale properly off of their abilities and first items alone. Yet, champs with a lot of CS, such as hyper-carries, usually require many items to be effective. In either situation, try to do better than the numbers displayed on this page to do well.
The top items to use in your Renata Glasc versus Janna build include Shurelya's Battlesong, Redemption, and Ardent Censer. When Renata Glasc incorporated at least these three pieces in their build, they did significantly better vs. Janna than with many other typical item sets. In fact, Renata Glasc boasted an average win rate of 48.4% when countering Janna with these items in their kit.
To have the greatest probability of defeating Janna as Renata Glasc, you should equip the Guardian, Shield Bash, Bone Plating, Unflinching, Relentless Hunter, and Zombie Ward runes from the Resolve and Domination rune sets. Of all the rune builds players used for Renata Glasc vs Janna matchups, this order of runes resulted in the greatest win rate. Moreover, these runes averaged a 48.4% winrate overall.
By default, tips, stats, and builds on how to beat Janna as Renata Glasc are given for every ranked division. To narrow the statistics and builds to a specific division, you can use the selection menu earlier in the counter matchup guide.