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.
The Janna Senna synergy stats shown here demonstrate the areas of her gameplay that do better (or worse) when paired with Senna, compared to her overall stats. Significant differences are areas of focus that highlight how her gameplay changes when paired with this other champion.
Overall, Janna sees a very large drop in her KDA (ratio of kills and assists to deaths) when paired with Senna. His KDA went down from NaN to NaN. This fall shows that Senna helps Janna perform not as well in competitive League matches. Yet, the small difference indicates that this performance change is only marginal.
When Janna is an ally to Senna, she gets a noticable increase in her total damage dealt. This change may indicate that Senna provides protection for her to dish out more damage or that her support also helps extend the game's duration. Similarly, when Janna is played together with Senna on the same team, he usually scores many fewer killing sprees than when she plays alone. This is contrasting evidence that she is worse when playing with Senna.
Additionally, when Janna plays with Senna on the same team, she typically takes more damage than when she plays alone. Getting dealt more damage could indicate that Senna does a poor job of protecting Janna during teamfights.
There is no top ally for Janna that will no matter what be her ideal synergy. Yet, overall, Senna is a top-tier teammate for Janna. By locking into the same team as Janna, she increases their win rate by 4.6% to 55.6%. This proves that there is a very real bond between Janna and Senna that results in them performing better together than alone.
Senna has a lower difficulty than Janna. That means you don't need to be careful when lining up Senna allies to go into battle on the same side as, as they will require a lower level of skill to cooperate well with you.
When playing alongside, you should expect to witness an overall large increase in your team’s capacity to provide utility and CC for your side. Together, these champs will help their other teammates secure a victory.
In contrast, by grouping Janna and Senna together, you may not be giving your other teammates very much protection for burst damage. Make sure to bring other champs on your team that nullifies this hole in their capabilities.
Regardless of the skill of your Senna teammate, you should focus on increasing your gold income, outlasting your enemies, and taking down objectives. If you follow these simple suggestions, you will do well anyway.
To truly master Janna to synergize with Senna during both the early game and mid / late game phases of League of Legends rounds, you should keep reading to master a few extra lessons on this champion pairing. If you listen to the build and tips presented above, you will grow your win rate significantly.
The best finished items to have in your Janna and Senna synergy build include Ardent Censer, Dream Maker, and Moonstone Renewer. When Janna bought at least these three items in her build, she did significantly better when paired up with Senna than with many other typical builds. In fact, Janna boasted an average winrate of 55.6% when synergizing her build and playstyle to Senna with this build.
To have the best probability of crushing your oponents, you should equip the Glacial Augment, Magical Footwear, Biscuit Delivery, Cosmic Insight, Font of Life, and Revitalize runes from the Inspiration and Resolve rune sets. Out of all the runes players picked for this team composition, this sequence of runes resulted in the highest win rate. In fact, these runes averaged a 55.6% winrate overall.
By default, tips, statistics, and builds on how to pair Senna with Janna are given for all ranked divisions. If you want to narrow the statistics and builds to an individual skill level, you can use the selection menu located earlier on the page.