Picking up Daggers will significantly reduce Shunpo's cooldown.
Try waiting until the other team is distracted with fighting your team, and use Shunpo to teleport into the fray and unleash a devastating Death Lotus.
Using Shunpo on an allied Champion, Dagger, or minion can be a great escape tactic.
Keeping tunnels spread out across the map will ensure you have choices when you want to cast Void Rush.
Cast Burrow before travelling around the map to take advantage of the increased Move Speed and the safety provided by Tremor Sense.
Tremor Sense can warn you of enemies closing in, and is particularly useful when entering enemy territory.
The Katarina Rek'Sai synergy stats shown here demonstrate the areas of her gameplay that do better (or worse) when paired with Rek'Sai, compared to her overall stats. Significant differences are areas of focus that highlight how her gameplay changes when paired with this other champion.
Overall, Katarina sees a very large drop in her KDA (ratio of kills and assists to deaths) when paired with Rek'Sai. His KDA worsened from NaN to NaN. This fall shows that Rek'Sai helps Katarina perform poorer in ranked LoL matches. Yet, the small difference proves that this performance change is not very impactful.
When Katarina is an ally to Rek'Sai, she gets a little decrease in her complete damage dealt. This difference may indicate that Rek'Sai does not help cover for her to deal more damage or that his presence also helps increase the match's duration. Similarly, when Katarina is played alongside Rek'Sai on the same team, he usually scores many fewer killing sprees compared to when she plays on his own. This is contrasting evidence that she is worse when playing synergisticly with Rek'Sai.
Additionally, when Katarina plays with Rek'Sai on the same team, she typically takes a little less damage than when she plays alone. Getting dealt not as much damage could indicate that Rek'Sai does a decent job of covering Katarina during teamfights.
There is no universally accepted best companion for Katarina that will 100% of the time be her ideal teammate. Yet, Rek'Sai is a relatively poor ally for Katarina. By playing on the same team as Katarina, he lowers their win rate by -2.5% to 46.3%. This demonstrates that there is a harmful bond between Katarina and Rek'Sai that results in them performing not as well together than without each other.
Rek'Sai has a much lower diffuclty than Katarina. That means you don't need to be cautious when arranging Rek'Sai comrades to go into battle on the same side as, as they will require a much lower level of skill to fight well with you.
When playing together, you will likely observe an overall large increase in your team’s capability to dish out massive AD. Combined, these champs should be able to take down targets with auto-attacks and other AD damage abilities.
In contrast, by pairing Katarina and Rek'Sai together, you may not be providing your side a great deal of crowd control. Make sure to pick other champs on your team that nullifies this relative disparity in their abilities.
Regardless of your Rek'Sai ally's ability, you should focus on maximizing your income, warding to avoid ambushes, and taking down objectives. If you heed this simple advice, you should do well, regardless.
To learn all of the intricacies of Katarina to work well with Rek'Sai during both the laning and mid / late game phases of League of Legends, you should continue reading to learn some more tips and tricks for this champion pairing. If you listen to the build and suggestions presented here, you will increase your win rate by a lot.
The best finished items to have in your Katarina and Rek'Sai synergy build consist of Lich Bane, Shadowflame, and Stormsurge. When Katarina combined at least these three pieces in her build, she did significantly better as an ally of Rek'Sai than with most other common item sets. In fact, Katarina had an average win rate of 46.3% helping carry Rek'Sai with this build.
To have the greatest chance of defeating your oponents, Katarina players should equip the Electrocute, Sudden Impact, Eyeball Collection, Relentless Hunter, Coup de Grace, and Triumph runes from the Domination and Precision rune sets. Out of all the runes players used for Katarina and Rek'Sai pairings, this set of runes resulted in the top win rate. Notably, these runes provided a 46.3% winrate overall.
If you need to see Katarina with Rek'Sai cooperations tips and stats for a a particular skill level, feel free to select one from the selection menu provided above. By default, the stats and strategies given are calculated using every game finished with these champs.