If you have trouble landing Prismatic Barrier, remember that it returns to you after it reaches max range. Try positioning yourself to hit your allies with its return trip.
Lux has great zone control abilities. Try to set up Lucent Singularity to prevent an enemy's advance or escape.
Lucent Singularity is a great scouting tool. Try throwing it into brush before walking into it to check for ambushes.
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 Lux 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, Lux sees a very large drop in her KDA (ratio of kills and assists to deaths) when paired with Rek'Sai. His KDA decreased from NaN to NaN. This negative change shows that Rek'Sai helps Lux perform worse in competitive League rounds. Yet, the small difference proves that this performance change is only marginal.
When Lux plays on the same team as Rek'Sai, she gets a small increase in her full damage dealt. This difference could demonstrate that Rek'Sai provides protection for her to deal more damage or that his participation also helps increase the game's duration. Similarly, when Lux is played with Rek'Sai on the same team, he usually scores many fewer killing sprees than when she plays on his own. This is contrasting evidence that she is worse when playing synergisticly with Rek'Sai.
Additionally, when Lux plays with Rek'Sai on the same side, she usually receives a little less damage than when she plays alone. Taking not as much damage could mean that Rek'Sai does a decent job of protecting Lux during teamfights.
There is no universally accepted best companion for Lux that will always be her #1 teammate. However, Rek'Sai is a relatively poor teammate for Lux. By locking into the same side as Lux, he decreases their win rate by -1.7% to 48.1%. This demonstrates that there is a harmful bond between Lux and Rek'Sai that results in them performing worse together than alone.
Rek'Sai has a lower difficulty than Lux. That means Lux players don't need to be very careful when arranging Rek'Sai allies to play with, as they will need a relatively low level of skill to cooperate well with you.
Playing cooperatively, Lux players should see an overall large increase in your team’s ability to deal magic damage. Combined, these champs can deal quite a lot of AP type damage.
Although, by aligning Lux and Rek'Sai together, you may not be providing your side very much engage. Plan to pick other champions on your team that nullifies this hole in their playstyle.
Regardless of the ability of your Rek'Sai ally, you need to focus on maximizing your gold income, outlasting your enemies, and clearing objectives. If you do this, you will do well anyway.
If you would like to truly master Lux in order to pair well with Rek'Sai during both the early game and mid / late game phases of League of Legends, you should continue reading to master additional tricks and insights into this champion pairing. If you use the build and tips presented above, you will increase your win rate significantly.
The most important items to get in your Lux and Rek'Sai synergy build consist of Horizon Focus, Stormsurge, and Luden's Companion. When Lux bought at least these three finished items in her build, she performed a lot better when paired up with Rek'Sai than with many other commonly used builds. In fact, Lux had an average win rate of 48.1% helping carry Rek'Sai with these items in her kit.
To have the best probability of defeating your oponents, you should take the Arcane Comet, Manaflow Band, Transcendence, Scorch, Biscuit Delivery, and Cosmic Insight runes from the Sorcery and Inspiration rune sets. Of all the runes we have analyed for Lux and Rek'Sai pairings, this order of runes resulted in the greatest win rate. In fact, these runes averaged a 48.1% winrate overall.
By default, tips, stats, and builds on how to team up Rek'Sai with Lux are presented for all skill levels combined. If you want to scope the stats and builds to an individual rank, you may use the selection menu earlier in the counter matchup guide.