Roar of the Slayer is a great setup ability to land a very powerful Decimating Smash.
You only have very slight turning ability during Unstoppable Onslaught, so make sure to use it in straight paths.
The Soul Furnace buff displays how much shield strength is remaining, use this information to time its explosion perfectly.
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.
Janna's at her strongest when buffing another ally. If you can harass her ally, it will weaken her ability to fight you.
The stats shown here clarify several strategic Sion versus Janna counter statistics that may help you grasp the differences between this set of champs. As an example, Sion’s KDA ratio ([kills + assists] / deaths) of NaN is more than Janna’s KDA ratio of NaN, showing that Sion may be more central to his team's team fighting capability than Janna..
Sion usually has a slightly larger longest kill spree than his opponent does. Typically, he takes more damage than Janna. This is usually reflective of differing health capacities, but it can also hint that the one champion has less mobility and thus is unable to flee from further damage when engaged or poked.
Both League of Legends champs are great champions. Both have their pros and cons. In the game's current meta, Sion usually loses when facing off against Janna, with a 48.5% win rate. Thus, Sion makes a poor counter to Janna.
While Sion does have a lower winrate than Janna, when they face off with one another, Sion also has a lower learning curve that makes him a less time consuming character to pick up and master. You should be careful when picking Sion into Janna.
Moreover, Sion has a good amount of CC and other utility, a similar amount to Janna. This often makes her just as valuable during teamfights, especially when facing champions with a ton of burst damage.
While there is not a single best champion for every situation in League of Legends, in Sion vs Janna matchups, Janna is the better champ with a lower win rate, less champion complexity, and a similar amount of utility to help out your team members during late stage team fights.
Sion is a somewhat poor counter for Janna. Focus your strategy on maximizing your gold income and taking out objectives. If you can do that, you should be able to stand on your own as Sion against Janna.
To truly master Sion in order to counter Janna during both the laning and mid / late game phases of League of Legends, you should keep reading to learn a few extra tips and tricks for this matchup. If you pay attention to the build and suggestions shown here, you will grow your win rate significantly and be that much closer to League of Legends pro players.
Sion on average accumulates much more CS as Janna. Champions who on average don't earn much CS often don't require much CS to be effective, such as sup champs. These kinds of champions are able to scale 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 situation, try to exceed the numbers displayed here to do well.
The most important items to have in your Sion versus Janna build include Heartsteel, Sunfire Aegis, and Titanic Hydra. When Sion incorporated at least these three items in his build, he did much better against Janna than with many other commonly used item sets. In fact, Sion boasted an average win rate of 48.5% when playing against Janna with this build.
To have the highest likelihood of beating Janna as Sion, Sion players should use the Grasp of the Undying, Demolish, Conditioning, Overgrowth, Minion Dematerializer, and Approach Velocity runes from the Resolve and Inspiration rune sets. Out of all the rune builds players used for Sion vs Janna face-offs, this mix of runes yielded the best win rate. In fact, these runes averaged a 48.5% winrate overall.
By default, tips, statistics, and builds on how to beat Janna as Sion are shown for all ranked divisions. If you want to filter the stats and builds to a distinct player tier, you can use the selection menu located earlier on the page.