Don't be too conservative with Mantra. Gathering Fire is strongest in teamfights, making it easy to recharge Mantra multiple times.
Gathering Fire rewards aggressive play. Look to land abilities and basic attacks on your opponent to lower Mantra's cooldown and stay on the offensive.
When using Focused Resolve, slow your opponents with Inner Flame or speed yourself up with Inspire if you're having trouble sticking to a target.
When Rek'Sai is near, she can see the position of you and your allies, but only if you're moving.
If you see one of Rek'Sai's tunnels, briefly stand on one of the entrances to destroy it.
Rek'Sai's Furious Bite gains damage as she builds Fury. Be very careful around her when her Fury is full.
The stats shown here emphasize some valuable Karma versus Rek'Sai matchup stats that may help you distinguish the differences and similarities between these two champs. As an example, Karma’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Rek'Sai’s ratio of NaN, demonstrating that Karma may be more central to her team's team fighting capacity than Rek'Sai. This observation is largely caused by the differences in assists.
Karma normally has a significantly smaller longest killing spree than her opponent does. On average, she takes less damage than Rek'Sai. This is usually reflective of different amounts of tankyness, but it can also indicate that the champion with increased HP has less agility and thus is not able to flee from further damage when poked or engaged.
Both LoL champs are great. Both champs have their strengths, weaknesses, and counters. In League's current meta, Karma usually loses when taking on Rek'Sai, with a 48.3% win rate. Thus, Karma makes a bad counter to Rek'Sai.
While Karma does have a lower winrate than Rek'Sai, when they face off with one another, Karma also has a greater level of difficulty that makes her a more complex character to pick up and master. You should be careful when picking Karma into Rek'Sai.
Moreover, Karma has a good amount of CC and other utility, a similar amount to Rek'Sai. This often makes her just as valuable during team fights, especially when facing champions with a ton of burst damage.
While there isn't one best champion in League of Legends, in Karma vs Rek'Sai matchups, Rek'Sai is the better champion with a lower win rate, more champion depth, and a similar amount of utility to help out your team members during team fights.
Karma is a somewhat poor counter for Rek'Sai. Focus your tactics on keeping up your gold income and clearing objectives. If you do that, you should be able to stand on your own as Karma against Rek'Sai.
If you would like to truly master Karma in order to counter Rek'Sai during both the laning and mid / late game phases of League of Legends, you should continue reading to gather a few extra tricks and insights into this matchup. If you pay attention to the build and stats presented here, you will increase your win rate significantly and be closer to League of Legends pro players.
Karma most often accumulates more CS relative to Rek'Sai. Champions who typically don't take many minion kills usualy don't have to have much CS to be effective, such as sup champs. They are able to scale properly off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually have to have a lot of items to be effective. In either case, try to do better than the numbers shown here to do well.
The most important items to focus on in your Karma versus Rek'Sai build consist of Zaz'Zak's Realmspike, Imperial Mandate, and Staff of Flowing Water. When Karma combined at least these three items in her build, she did much better vs Rek'Sai than with many other common counter builds. In fact, Karma had an average winrate of 48.3% when playing against Rek'Sai with this build.
To have the highest probability of coming out on top against Rek'Sai as Karma, Karma players should equip the Arcane Comet, Manaflow Band, Transcendence, Scorch, Biscuit Delivery, and Cosmic Insight runes from the Sorcery and Inspiration rune sets. Of all the rune combinations players picked for Karma vs Rek'Sai fights, this mix of runes yielded the highest win rate. In fact, these runes averaged a 48.3% winrate overall.
By default, tips, statistics, and builds on how to beat Rek'Sai as Karma are shown for all ranked divisions. If you would like to scope the statistics and builds to an individual skill level, you can use the selection menu located earlier in the counter matchup guide.