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.
Try to stay away from walls. Ornn is much less strong if he cannot stun you.
Attack Ornn to keep him from creating items in lane.
The stats shown here underscore some strategic Sejuani vs. Ornn matchup stats that may help you grasp the differences between the two. Sejuani’s KDA ratio ([kills + assists] / deaths) of NaN is more than Ornn’s KDA ratio of NaN, indicating that Sejuani may be more central to her team's team fighting capability than Ornn..
Sejuani normally has a similar longest killing spree as her foe does. Commonly, she receives a similar amount of damage to Ornn. This often reflects different amounts of tankyness, yet it can also show that the one champ has less agility and thus is not able to flee from additional damage when engaged or poked.
Both League champs are great. Both champs have their pros and cons. In the game's current meta, Sejuani usually loses when playing against Ornn, with a 46.3% win rate. Thus, Sejuani makes a poor counter to Ornn.
While Sejuani does have a lower winrate compared to Ornn, when they face off with one another, Sejuani also has a lower learning curve that makes her a less time consuming champion to learn and master. You should expect to face a difficult match when picking Sejuani into Ornn.
Furthermore, Sejuani has a good amount of CC and other utility, a similar amount to Ornn. This often makes her just as valuable during teamfights, especially when facing champions with a lot of burst damage.
While there is not a single best champion overall in League of Legends, in Sejuani vs Ornn matchups, Ornn is the better champ with a much lower win rate, less champion complexity, and a similar amount of utility to help out your teammates during team fights.
Sejuani is a trash counter to Ornn. Make sure you focus your tactics on maximizing your CS and destroying objectives. If you are able to do that, you should do very well as Sejuani against Ornn.
To truly master Sejuani in order to counter Ornn during both the lane and mid / late game phases of League of Legends, you should continue reading to gather a few extra lessons on this matchup. If you mind the build and tips presented here, you will grow your win rate significantly and be closer to League of Legends pro players.
Sejuani often accumulates a lot less CS as Ornn. Champions who typically don't get many minion kills typically don't need much CS to be valuable teammates, such as sup champs. These kinds of champions 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, often require a lot of items to be effective. In either situation, try to do better than the values reported here to do well.
The top items to have in your Sejuani versus Ornn build consist of Thornmail, Hollow Radiance, and Jak'Sho, The Protean. When Sejuani combined at least these three pieces in her build, she did much better against Ornn than with many other typical builds. In fact, Sejuani boasted an average winrate of 46.3% when countering Ornn with these items in her kit.
To have the best chance of defeating Ornn as Sejuani, you should use the Aftershock, Font of Life, Conditioning, Overgrowth, Legend: Alacrity, and Triumph runes from the Resolve and Precision rune sets. Out of all the rune sets players chose for Sejuani vs Ornn battles, this combo of runes resulted in the greatest win rate. Moreover, these runes provided a 46.3% win rate overall.
By default, tips, stats, and builds on how to beat Ornn as Sejuani are presented for all ranked divisions. To scope the statistics and builds to an individual rank, you can use the selection menu located earlier on the page.