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.
When laning against Sivir, it is possible to throw off the timing of her Spell Shield by faking an advance, then backing off.
Sivir is a powerful pushing champion, so leaving her unattended in a lane for too long will often result in your turrets being destroyed.
Boomerang Blade costs a lot of mana to cast, so dodging it sets Sivir back. If it hits you on the way out, avoid its path on the way back.
The stats shown on this page highlight several significant Sejuani vs. Sivir matchup statistics that may help us appreciate the distinctions between the two. As an example, Sejuani’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Sivir’s ratio of NaN, highlighting that Sejuani may be more central to her team's team fighting effectiveness than Sivir..
Sejuani often has a slightly smaller longest kill spree than her opponent does. Commonly, she takes more damage than Sivir. This is usually reflective of different amounts of tankyness, yet it can also imply that the champ with more health has less agility and thus is not able to kite away from further damage when engaged or poked.
Both League champs are great champions. Both champs have their pros and cons. In League's current meta, Sejuani usually loses when trying to fight Sivir, with a 46.2% win rate. Therefore, Sejuani makes a bad counter to Sivir.
While Sejuani does have a lower winrate than Sivir, when on opposite teams, Sejuani also has a greater learning curve that makes her a more difficult champ to learn. You should expect to face a difficult match when picking Sejuani into Sivir.
Additionally, Sejuani also has a good amount of CC and other utility, a similar amount to Sivir. This makes her just as valuable during teamfights, especially when fighting champions with a lot of burst damage.
While there is not one best champion for every situation in League of Legends, in Sejuani vs Sivir matchups, Sivir is the better champion with a much lower win rate, similar champion depth, and a similar amount of utility to help out your teammates during team fights.
Sejuani is a terribly counter to Sivir. You will do well by focussing your play on maximizing your gold and cs and taking out objectives. If you are able to do that, you should hold your own as Sejuani against Sivir.
To learn all of the intricacies of Sejuani in order to counter Sivir during both the lane and mid / late game phases of League of Legends, you should keep reading to gather a few extra tips and tricks for this matchup. If you pay attention to the build and tips displayed above, you will increase your win rate significantly and be that much closer to League of Legends pro players.
Sejuani on average gets a lot less CS relative to Sivir. Champs who on average don't get much CS often don't need much CS to be effective, such as supports. These kinds of champions are able to scale well off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, usually need a lot of items to be effective. In either case, try to surpass the values reported on this page to do well.
The most important items to use in your Sejuani versus Sivir build include Sunfire Aegis, Thornmail, and Jak'Sho, The Protean. When Sejuani combined at least these three pieces in her build, she did significantly better vs Sivir than with many other typical item sets. In fact, Sejuani boasted an average winrate of 46.2% when playing against Sivir with this counter build.
To have the highest likelihood of crushing Sivir as Sejuani, you should take the Aftershock, Font of Life, Conditioning, Overgrowth, Legend: Alacrity, and Triumph runes from the Resolve and Precision rune sets. Out of all the rune builds players picked for Sejuani vs Sivir counterpicks, this order of runes resulted in the best win rate. In fact, these runes averaged a 46.2% win rate overall.
By default, tips, stats, and builds on how to beat Sivir as Sejuani are shown for every ranked division. If you would like to scope the statistics and builds to a specific division, you should use the selection menu above.