Melee allies can stack Frost for your Permafrost, keep an eye on who they are attacking.
Save Glacial Prison for encounters where you have teammates present to take advantage of it.
Use Arctic Assault to escape bad situations, interupt channeled spells or chase runners.
Rengar's passive enables him to leap out of brush, so avoid fighting him when near bushes.
Rengar puts an indicator over the nearest enemy champion when he is camouflaged during his ultimate.
Rengar gains an empowered ability when his resource bar is full. Try to confront him when it's low.
The stats shown on this page clarify some influential Sejuani against Rengar matchup stats that may help you explain the differences between the two. As an example, Sejuani’s KDA ratio ([kills + assists] / deaths) of NaN is more than Rengar’s ratio of NaN, demonstrating that Sejuani may be more central to her team's team fighting capacity than Rengar. This observation is in large part fueled by the differences in assists.
Sejuani typically has a slightly smaller longest killing spree than her matchup does. Commonly, she receives a similar amount of damage to Rengar. This commonly reflects different amounts of tankyness, yet it can also imply that the champ with higher health has less agility and thus is not able to escape further damage when poked or engaged.
Both League champs are great champions. Both have their strengths, weaknesses, and counters. In the game's current meta, Sejuani usually fairs equally well when facing off against Rengar, with a 50.2% win rate. Therefore, Sejuani makes an ok counter to Rengar.
While Sejuani does have a higher winrate than Rengar, when on opposite teams, Sejuani also has a much lower level of difficulty that makes her a less complex champion to develop with. You still need to be cautious when picking Sejuani into Rengar.
Moreover, Sejuani has a good amount of utility and CC, a similar amount to Rengar. This makes her just as valuable during teamfights, especially when trying to counter champions with a lot of burst damage.
While there isn't a single best champion overall in League of Legends, in Sejuani vs Rengar matchups, Sejuani is the better champ with a similar win rate, less champion complexity, and a similar amount of utility to help out your allies during late stage team fights.
Sejuani is a decent counter to Rengar. Focus your actions on maximizing your gold and cs and destroying objectives. If you can do that, you should be able to stand on your own as Sejuani against Rengar.
If you would like to truly master Sejuani in order to counter Rengar during both the early game 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 shown here, you will grow your win rate by a lot and be that much closer to League of Legends pro players.
Sejuani typically racks up a similar amount of CS as Rengar. Champions who typically don't get many minion kills often don't have to have much CS to be valuable teammates, such as sup champs. These kinds of champions are able to scale well off of their skills, stats, and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually have to have many items to be effective. In either case, try to exceed the values displayed here to do well.
The best items to use in your Sejuani versus Rengar build include Sunfire Aegis, Thornmail, and Force of Nature. When Sejuani combined at least these three items in her build, she performed significantly better vs. Rengar than with most other commonly used counter builds. In fact, Sejuani had an average win rate of 50.2% when playing against Rengar with this counter build.
To have the best chance of vanquishing Rengar as Sejuani, you should take the Aftershock, Font of Life, Conditioning, Overgrowth, Legend: Alacrity, and Triumph runes from the Resolve and Precision rune sets. Of all the rune sets players used for Sejuani vs Rengar counterpicks, this blending of runes resulted in the best win rate. Moreover, these runes provided a 50.2% win rate overall.
By default, tips, stats, and builds on how to beat Rengar as Sejuani are given for all skill levels combined. If you want to scope the stats and builds to a particular player tier, you may use the selection menu above.