Make sure you choose the right augment at the right time.
Death Ray is a powerful poke and a strong area of denial tool. Use it in combination with Gravity Field to control your enemy's position.
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 Viktor Rek'Sai synergy stats shown here demonstrate the areas of his gameplay that do better (or worse) when paired with Rek'Sai, compared to his overall stats. Significant differences are areas of focus that highlight how his gameplay changes when paired with this other champion.
Overall, Viktor sees a large worsening in his KDA (ratio of kills and assists to deaths) when paired with Rek'Sai. His KDA worsened from NaN to NaN. This worsening shows that Rek'Sai helps Viktor perform worse in competitive League of Legends rounds. Yet, the small difference shows that this performance change is only marginal.
When Viktor is an ally to Rek'Sai, he sees a little decrease in his full damage output. This change could demonstrate that Rek'Sai does not help cover for him to dish out more damage or that his presence on the team also helps extend the round's duration. Similarly, when Viktor is played alongside Rek'Sai on the same side, he usually scores many fewer killing sprees than when he plays without Rek'Sai. This is contrasting evidence that he is worse when playing alongside Rek'Sai.
Additionally, when Viktor plays with Rek'Sai on the same team, he often receives a little less damage than when he plays alone. Taking not as much damage may mean that Rek'Sai does a decent job of covering Viktor during teamfights.
There is no universally accepted best companion for Viktor that will 100% of the time be his best ally. However, Rek'Sai is a terrible companion for Viktor. By being on the same side as Viktor, he drops their win rate by -3.3% to 46.9%. This proves that there is a very bad bond between Viktor and Rek'Sai that results in them performing worse together than alone.
Rek'Sai has a much lower diffuclty than Viktor. That means you don't need to be very careful when lining up Rek'Sai allies to fight alongside, as they will have to have a much lower level of skill to be able to do well with you.
Working together, you will likely see an overall large increase in your team’s capability to deal magical damage. Together, these champs can deal quite a lot of AP type damage.
In contrast, by grouping Viktor and Rek'Sai together, you may not be providing your team a lot of crowd control. We recommend you bring other champs on your team that neutralizes this relative disparity in this pairing's abilities.
Regardless of your Rek'Sai ally's skill level, you should focus on maximizing your income, outlasting your enemies, and clearing objectives. If you do this, you will do well, regardless.
To truly master Viktor to work well with Rek'Sai during both the early game and mid / late game phases of League rounds, you should continue reading to learn a few extra lessons on this champion pairing. If you mind the build and stats shown above, you will increase your win rate by a lot.
The best items to use in your Viktor and Rek'Sai synergy build include Shadowflame, Stormsurge, and Luden's Companion. When Viktor included at least these three finished items in his build, he performed much better when fighting alongside Rek'Sai than with most other common builds. In fact, Viktor boasted an average winrate of 46.9% when playing alongside Rek'Sai with this build.
To have the best chance of crushing your oponents, you should use the First Strike, Magical Footwear, Biscuit Delivery, Cosmic Insight, Manaflow Band, and Transcendence runes from the Inspiration and Sorcery rune sets. Of all the runes players used for this champion pairing, this sequence of runes yielded the best win rate. In fact, these runes provided a 46.9% win rate overall.
By default, tips, statistics, and builds on how to synergize Rek'Sai with Viktor are displayed for all ranked divisions combined. If you would like to narrow the stats and builds to a specific player tier, you should use the selection menu above.