League of Legends Sejuani Guide: Best Build, Runes & Combos

Sejuani is a powerful tank jungler in League of Legends known for her strong engage, crowd control, and ability to lead teamfights. With her icy resilience and high CC potential, she can easily lock down priority targets and set up plays for her team. In this guide, we’ll break down the best build, runes, items, and combos to help you master Sejuani and dominate the jungle with her frost-fueled power.

Sejuani Abilities Overview In League of Legends 

Here’s a breakdown of Sejuani’s abilities in League of Legends:

Passive – Fury of the North: After not taking damage for a short time, Sejuani gains Frost Armor, increasing her resistances and making her immune to slows. When she immobilizes enemies, she also applies Frost to them.

Q – Arctic Assault: Sejuani charges forward, dealing damage and knocking up the first enemy hit. It’s great for engaging fights or escaping sticky situations.

W – Winter’s Wrath: She swings her flail twice—first in a small cone, then in a straight line. The second hit slows and damages enemies based on their max health.

E – Permafrost: When enemies are hit with crowd control or auto-attacked by Sejuani or nearby melee allies, they get Frost stacks. At max stacks, Sejuani can activate Permafrost to stun and damage them.

R – Glacial Prison: Sejuani throws a massive ice bola that stuns the first champion hit and explodes in an area, damaging and slowing nearby enemies. It’s her signature initiation tool and great for teamfights.

How To Play Sejuani In League of Legends

Best Summoner Spells For Sejuani

The best summoner spells for Sejuani are Smite and Flash. Smite is essential for clearing jungle camps and securing objectives like Dragon or Baron, while Flash gives Sejuani the mobility she needs to make clutch engages or escape tight spots. This combo is the standard for jungle Sejuani and works in all elos.

Best Runes For Sejuani

The best runes for Sejuani are from the Resolve primary tree and Inspiration secondary:

Primary (Resolve):
• Aftershock – Gives tankiness after engaging with crowd control.
• Font of Life – Helps your allies heal when they hit enemies you CC.
• Conditioning – Increases your armor and magic resist after 12 minutes.
• Unflinching – Boosts tenacity and slow resistance when using summoner spells.

Secondary (Inspiration):
• Hextech Flashtraption – Useful for surprise engages from brushes or over walls.
• Cosmic Insight – Reduces cooldowns on your summoner spells and items.

Stat Shards:
• +Ability Haste
• +Armor
• +Health Scaling

This setup helps Sejuani be tanky, initiate fights reliably, and provide consistent crowd control in skirmishes and teamfights.

Best Build For Sejuani

The best build for Sejuani In League of Legends focuses on tankiness and crowd control to help her frontline and initiate fights effectively. Start with Radiant Virtue as your Mythic item for strong teamfighting and healing effects. Follow up with Sunfire Aegis or Thornmail depending on the enemy comp — go Thornmail if they have strong healing. Next, get Frozen Heart or Force of Nature for armor or magic resist, and Jak’Sho the Protean can also work well if you’re in long fights. Round out your build with Warmog’s Armor for insane health regeneration and sustain. Always adapt your build depending on the enemy team’s damage types.

Best Combos To Learn For Sejuani

Here are the best Sejuani combos to learn and master for better engages and skirmishes:

1. Basic Engage Combo:
Q (Arctic Assault) → W (Winter’s Wrath) → AA → E (Permafrost)
Use Q to dash into your target, follow up with W and a basic attack to stack your passive, then use E to stun.

2. Full Lockdown Combo:
R (Glacial Prison) → Q → W → AA → E
Start with your ultimate from range to stun, quickly close the gap with Q, and finish the combo to apply massive CC.

3. Jungle Gank Combo:
Q (from fog of war) → AA → W → AA → E
Use Q to start the gank, weave auto attacks between spells to stack E faster, and then stun the enemy to secure the kill.

4. Flash Engage Combo:
Flash → Q → W → AA → E → R
Use Flash to instantly close distance for a surprise engage, then follow your standard combo, saving R for a second stun or disengage.

Mastering these will let you peel, engage, and control teamfights with ease.

Conclusion

Sejuani is a powerful tank and crowd control champion that shines in coordinated teamplay and jungle skirmishes. With the right build, runes, and combo execution, she becomes a reliable frontliner who can initiate fights, lock down high-priority targets, and turn the tide of battles. Whether you’re peeling for your carries or setting up game-winning engages, mastering Sejuani’s kit will make you a valuable asset to any team.