1. About Sejuani
2. Abilities
a. Fury of the North (Passive)
b. Arctic Assault (Q)
c. Winter's Wrath (W)
d. Permafrost (E)
e. Glacial Prison (R)
3. Skill Order
4. Runes
5. Item Build
6. Early Game
7. Mid Game
8. Late Game
9. Teamfighting
10. Jungling Tips
11. Counters and Matchups
12. About Me: Shiningsun

Sejuani is the Winter's Wrath, a formidable tank and crowd control champion in League of Legends. Hailing from the icy tundras of Freljord, Sejuani brings both frosty fury and crowd-controlling abilities to the Rift. Her primary role is that of a jungler, where she can roam the map, secure objectives, and provide invaluable crowd control for her team.

Sejuani's kit revolves around engaging and disrupting the enemy team with her crowd control abilities. Her passive, "Fury of the North," allows her to apply frost to enemies, making her abilities even more potent. Her Q ability, "Arctic Assault," is a charging dash that can engage enemies or escape from dangerous situations. "Winter's Wrath," her W ability, unleashes a devastating area-of-effect damage and applies her passive frost. "Permafrost," her E ability, stuns enemies affected by her frost, making her an exceptional crowd control tank. Finally, her ultimate, "Glacial Prison," is a game-changing AoE stun that can turn the tide of battles.

In this guide, we'll dive deep into Sejuani's abilities, the optimal way to play her, runes, items, and more.

2. Abilities

a. Fury of the North (Passive)
Fury of the North is Sejuani's passive ability. It adds bonus magic damage to her basic attacks and abilities. When Sejuani applies her passive, it coats the target in frost. After a few hits or spells, the frost detonates, dealing AoE magic damage and briefly slowing the affected enemies. This is the core mechanic that enhances all of her other abilities.

b. Arctic Assault (Q)
Arctic Assault (Q) is Sejuani's primary initiation tool. She charges forward, knocking up the first champion hit and damaging all enemies in her path. This ability is great for engaging fights, escaping sticky situations, or closing the gap between you and your enemies. It also applies frost, setting up your other abilities for crowd control.

c. Winter's Wrath (W)
Winter's Wrath (W) is Sejuani's main source of damage. It's an AoE ability that damages and applies frost to all nearby enemies. It also has a secondary activation that causes Sejuani to swing her flail, dealing bonus damage to the closest enemy. Properly using the secondary activation maximizes Sejuani's damage output, especially in prolonged fights.

d. Permafrost (E)
Permafrost (E) is Sejuani's primary crowd control ability. When activated, it consumes the frost applied by her other abilities, stunning and damaging the targeted enemy. This ability is your bread and butter for crowd control and securing kills, especially in ganks and teamfights.

e. Glacial Prison (R)
Glacial Prison (R) is Sejuani's game-changing ultimate ability. She throws her flail in a line, exploding on the first champion hit or when it reaches its maximum range. It damages and stuns all nearby enemies. Landing a good Glacial Prison can turn the tide of battles and set up your team for victory. Use it wisely, as it can be a game-defining ability.

3. Skill Order
Here's the recommended skill order for Sejuani:

Start with W - Winter's Wrath for the AoE damage and clear potential in the jungle.
Max E - Permafrost first for increased crowd control and damage.
Max W - Winter's Wrath second for increased damage output.
Put points into Q - Arctic Assault last, as it's mainly used for its utility and gap-closing potential.
Of course, always prioritize putting points into your ultimate, R - Glacial Prison, whenever available at levels 6, 11, and 16.

Sejuani benefits from runes that enhance her tankiness, crowd control, and sustain in the jungle. Here's a typical rune setup:

Primary Tree: Resolve

Keystone: Aftershock - Provides bonus resistances after immobilizing an enemy champion, increasing your durability during engages.
Font of Life: Helps your team by applying healing to allies when you immobilize an enemy with crowd control.
Conditioning: Gives bonus resistances after 10 minutes, making you tankier in the late game.
Unflinching: Grants tenacity and slow resistance when you use summoner spells like Smite or Flash.
Secondary Tree: Precision

Triumph: Restores health and grants bonus gold for takedowns, providing sustain and extra income.
Legend: Tenacity: Helps mitigate crowd control effects, making you less susceptible to being locked down.

Sejuani's item build should focus on maximizing her tankiness, cooldown reduction, and crowd control potential. Here's a general item build for Sejuani:

Sunfire Aegis: This Mythic item provides bonus health, damage, and tankiness. Its Immolate passive helps with jungle clears and adds damage to your kit.

Plated Steelcaps or Mercury's Treads: Choose between these boots based on the enemy team composition. Plated Steelcaps are great against physical damage-heavy teams, while Mercury's Treads help against magic and crowd control-heavy teams.

Thornmail: This item is excellent against auto-attack reliant champions and provides grievous wounds to reduce healing on enemies.

Abyssal Mask: Boosts your magic resist and synergizes well with Sejuani's kit. The passive increases the damage enemies take when immobilized, further enhancing your crowd control.

Dead Man's Plate: Provides movement speed and additional burst damage when you engage with Arctic Assault. It also increases your overall tankiness.

Gargoyle Stoneplate: This item is a great choice for teamfights. Activate it before using your ultimate, Glacial Prison, to maximize your tankiness during the engage.

Warmog's Armor: It gives you a massive health pool and passive health regeneration, allowing you to sustain through extended fights and re-engage quickly.

Control Ward: Always carry control wards to maintain vision control around objectives and in the jungle.

Early Game
During the early game, focus on clearing your jungle camps efficiently. Start with your W ability, Winter's Wrath, as it's your main damage tool for clearing. Continue to max E first for better gank potential. Look for opportunities to gank lanes, especially when your ultimate is available.

Control the Scuttle Crabs and secure objectives like Dragon and Rift Herald when possible. Sejuani excels at securing objectives due to her crowd control and burst damage. Make sure to ward the river and coordinate with your team to secure these objectives safely.

In the mid game, Sejuani's crowd control becomes even more crucial. Look for opportunities to engage teamfights with your ultimate, Glacial Prison. Properly landing it can result in game-changing picks and fights in your favor.

Stick with your team and be the frontline tank. Peel for your carries with your crowd control abilities and keep an eye on the map for opportunities to catch out-of-position enemies. Ward the jungle to maintain control and deny the enemy vision.

As the game progresses, Sejuani's tankiness and crowd control become pivotal. Your role is to initiate and soak up damage for your team while disrupting the enemy's backline with your crowd control. Coordinate with your team to engage, and prioritize high-value targets with your stuns.

Secure Baron Nashor and Elder Dragon with your team to gain significant advantages. In late-game teamfights, a well-timed Glacial Prison can decide the outcome of the game. Use it to catch multiple enemies and create opportunities for your team to follow up with damage.

Sejuani shines in teamfights thanks to her crowd control abilities. In teamfights, follow these guidelines:

Initiate: Use Arctic Assault or Flash to engage the enemy team. Your goal is to catch as many enemies as possible in your ultimate, Glacial Prison.

Peel: Protect your carries by using Permafrost to stun divers and assassins. Use Winter's Wrath to slow down enemies and zone them away from your backline.

Disrupt: Keep using your abilities to disrupt the enemy team. Apply frost with Winter's Wrath and auto-attacks, and follow up with Permafrost stuns.

Focus: Prioritize high-priority targets with your crowd control. Lock down enemy carries to prevent them from dealing damage.

Use Stoneplate: Activate Gargoyle Stoneplate to become extremely tanky during the fight, making it difficult for enemies to kill you.

Here are some additional jungle-specific tips for Sejuani:

Start with a leash: Ask your teammates for a leash at your starting camp to clear it faster and take less damage.

Farm efficiently: Use your W and E abilities to clear jungle camps. Auto-attack between abilities to maximize damage.

Use Smite wisely: Save your Smite for securing objectives like Dragon or Baron, or for healing up with the Blue Smite variant.

Counter-gank: Pay attention to the map and counter-gank when you see an opportunity. Sejuani's crowd control can turn the tide of a fight.

Invade cautiously: Be careful when invading the enemy jungle, especially if you don't have vision. Sejuani is more effective in teamfights than in solo duels.

Sejuani's effectiveness can vary based on the enemy team composition. Here are some general matchups and counters to be aware of:

Counters:

Olaf: Olaf's immunity to crowd control makes him a difficult target for Sejuani to deal with.
Udyr: Udyr's fast clear and ability to chase down Sejuani in the jungle can be troublesome.
Graves: Graves can deal a lot of damage and kite Sejuani effectively.
Matchups:

Amumu: Sejuani and Amumu have similar playstyles, but Sejuani's crowd control can interrupt Amumu's engages.
Nunu & Willump: Both champions have strong engage tools, but Sejuani can disrupt Nunu's engages with her crowd control.
It's important to adapt your playstyle and itemization based on the specific champions you're facing.

Hi, I'm Shiningsun, a professional League of Legends player and guide writer. I've been playing League for over 10 years, and Sejuani is one of the Champions linked in my Champion pool as a Challenger Jungler. I enjoy the strategic depth of the game and the thrill of outsmarting opponents in the jungle.

I believe Sejuani is an underrated champion with incredible potential, especially when it comes to initiating teamfights and controlling the pace of the game. In this guide, I've shared my knowledge and experience with Sejuani to help you become a formidable Winter's Wrath on the Rift.

If you have any questions or need further advice, feel free to reach out. Remember, the key to mastering Sejuani is practice, communication with your team, and adapting to the ever-changing dynamics of League of Legends. You can also just add me on Discord. (.shiningsun) to get some coaching on various Champions or check out my Stream on top of the guide!