Because of Janna's K/D/A and utility, she has a pretty good overall win rate. She does very well in the mid game, with a winrate of 51.45% in that phase. Unfortunately, she does poorest in the late game, where Janna's win rate is 50.2%., The difference between her best and worst game phases is only 1.3%. This negligible difference indicates that her relative power is flat during the game.
Janna has been picked somewhat often in the latest ranked League games. In the current meta, her popularity is 5.3%. She is rarely banned during champion select. Obviously, very few players see her as a huge threat. In the latest ranked matches, Janna was banned 1.5% of the time.
Janna is played mostly in the support position. This happens in 99,6% of her games. Support Janna also has the highest win rate (51,2%) of all positions. At this time, Janna's meta game is focused on utility and support. Specifically, her kit should mostly be focused on assisting others. Furthermore, she is an ok magical damage dealer champ. Dealing physical damage is the least critical part of Janna’s playstyle.
You should anticipate having to dedicate a decent amount of time practicing and learning to get good with Janna. Many League of Legends gamers believe she is an average difficulty champion to get good at. Janna primarily deals magic damage (81% of her total damage). She doesn't deal much of other damage types and should not be considered a hybrid damage dealer..
Janna deals only a little damage during a typical round (7.400 damage). You probably shouldn't focus on building her as a damage dealing champ to defeat your foes. Rather, you should focus on covering your allies to win.
She is a weak damage dealer on the Rift with 1.4 kills on average per match. That is one of the lowest kill rates amongst all supports. Moreover, she has a somewhat typical death rate with an average of 4.8 deaths per League of Legends match. Furthermore, Janna has a high KDA ratio (3.3) with 14.6 assists.
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