Sion LoL Guide: Best Build, Runes, Counters, Tips and Lore

Sion wins games by forcing fights on his terms. He takes space, threatens suffocating crowd control, and keeps pressure even after he “dies.” If you want a tank that can start chaos and still matter when focused, Sion fits that job. This League of Legends Sion Guide covers his lore identity, what each ability does, and how to plan fights around his strengths and limits.

"Only cowards fear death."

Last updated: 30/6/2026

What Sion Does in a Game

Sion is a frontline champion built to start fights and disrupt teams. He controls areas with a charged knock-up and stun, slows targets to set up follow-up, and can cross long distances with a charge that punishes bad positioning.

He also has a rare trait: he stays dangerous after death. That changes how enemies must move around him, especially in close fights.

Sion’s Story and Why It Matters to His Playstyle

Sion was once a Noxian war hero from a bygone era. He became revered for killing a Demacian king with his bare hands. Noxus denied him oblivion and brought him back to serve the empire even in death.

That return did not bring his humanity with it. His slaughter became indiscriminate, killing anyone in the way, ally or enemy. With crude armor bolted onto rotten flesh, Sion charges into battle with reckless abandon, trying to remember who he was between swings of his axe.

That theme matches his kit. He is built to go forward, commit, and trade his life for control and damage if needed.

[caption align="aligncenter" width="800"]The Undead Juggernaut. Credit: Riot Games[/caption]

Sion: Abilities Explained

Passive: Glory in Death

When Sion takes fatal damage, he enters stasis for 1.5 seconds, then reanimates into a frenzy. He restores to full health at the start of this state, then rapidly loses health in ticks that accelerate over time. During this zombie state, his health regeneration and most healing are ineffective. Life steal still works.

While reanimated, Sion can only move, basic attack, and use item actives. His normal abilities are replaced with one cast of Death Surge. Attacks gain strong effects: fixed attack speed, full life steal, and bonus on-hit physical damage equal to 10% of the target’s max health (capped against non-champions). His damage to structures is reduced during this state.

How to think about it: the enemy does not get a clean reset after killing you. They still have to respect your threat, or you trade your “death” for a kill, forced movement, or time.

Zombie Ability: Death Surge

Death Surge gives Sion a large burst of movement speed that decays over a short time. He gets one cast while in zombie form. Use it to reach a target that tries to kite, to cut off an escape path, or to force a hit that triggers the max-health on-hit damage and life steal.

Q: Decimating Smash

Sion charges a strike in a direction for up to 2 seconds. As the channel builds, the area grows and the hit gets stronger. If he releases early, he swings for damage and a brief slow. If he charges for at least 1 second, he slams down for damage, a knock-up, and a longer stun that scales with charge time.

This spell can be recast to release early, and it releases automatically when the channel ends. If silence interrupts the charge, the ability goes on a short 2-second cooldown with a few exceptions noted in the ability details.

What matters in fights: Decimating Smash is your biggest teamfight lever. A good long charge can lock down multiple enemies at once. A quick release can still slow and set up the next step.

W: Soul Furnace

Passive: Sion gains bonus health when he kills enemies (Infinite Stacking). Large enemies and champion takedowns give more stacks. He must learn the ability before he can beginning stacking.

Active: Sion shields himself for up to 6 seconds. After 3 seconds, he can recast, or it will recast automatically at the end. The recast detonates the shield to deal magic damage around him, with a cap against minions and monsters. Both casts can be used during Sion’s other abilities.

What matters in fights: the shield keeps you alive during the setup for Q or ultimate. The detonation adds a burst of damage in close range, especially if enemies stay near you too long.

E: Roar of the Slayer

Sion fires a shockwave in a direction. It hits the first enemy, dealing magic damage, applying a long slow, and reducing the target’s armor for a short time.

If the target is a minion or a non-epic monster, Sion knocks it back and stuns it briefly. That thrown unit can pass through and apply the same effects to enemies it hits along the path.

What matters in fights: Roar of the Slayer sets up everything. The slow makes Q easier to land. The armor reduction helps your physical damage and can also help allies who follow up.

R: Unstoppable Onslaught

Sion becomes immune to crowd control, then charges forward for up to 8 seconds. He can steer, but the turning is limited. His speed ramps up over time, reaching very high movement speed.

If Sion hits an enemy champion or terrain, the charge ends with a slam. Enemies hit take physical damage, and those near the slam get slowed. Enemies in a smaller area get pulled toward Sion and then stunned, with the stun duration scaling with charge time. If Sion hits terrain, Sion is briefly stunned.

Unstoppable Onslaught can be recast to end the charge early and slam at that location.

What matters in fights: this ability forces spacing. The global warning sound also creates pressure because teams must track where you might be coming from.

[caption align="aligncenter" width="800"]Credit: Riot Games[/caption]

Core Gameplay Plan

Use E to Create a Q Window

Roar of the Slayer is the cleanest setup tool. The slow lasts long enough to threaten a charged Q. Even if the enemy avoids the full knock-up, they often burn movement options to do it.

If you hit a minion or monster and throw it through enemies, you can get a wider setup angle by tagging targets hiding behind the wave.

Decide if Q Is for Damage or Control

A full charge can win a fight, but it is not always the right choice. Sometimes the short release is enough.

If your team needs time to arrive or you need to stop a dash path, hold it longer. If you only need to clip someone to keep them in place, release early and keep moving.

Use W Before You Commit

Soul Furnace gives you a shield that can cover the time it takes to charge Q or to travel with your ultimate. If you pop it too late, the shield breaks before it matters. If you pop it too early, enemies can step back and wait it out.

Try to time the recast detonation when enemies are forced to stay near you. That often happens after you land crowd control or when you body-block a tight area.

Combos That Fit Sion’s Kit

This guide uses one short bullet section for combos.

[caption align="aligncenter" width="800"]Sion shines in the setup, whether its for teammates or himself. Credit: Riot Games [/caption]

Playing Around Glory in Death

Glory in Death changes how you trade. Enemies often want to kill you first, then take the fight. Your passive punishes that plan.

What to Do When You Reanimate

Pick the target who cannot escape. Look for low mobility, or someone already slowed.

Use Death Surge to close the last gap, then stay on top of them with basic attacks. Your on-hit damage is based on their max health, so every hit matters even against tanky targets.

What Enemies Will Try

They will kite and reposition, then turn when you fall. Expect that. Your job is to force them to spend time and space dealing with you, alive or dead.

Do not chase a target you cannot reach. Use Death Surge to cut them off, not to run behind them in a straight line.

Using Unstoppable Onslaught Well

Pick Straight Paths

Your turning is limited. Straight lanes, river angles, and open corridors are safer. If the path is too tight, you risk hitting terrain and stunning yourself.

Recast on Purpose

Holding the charge too long can overshoot, or it can make your team’s follow-up harder. Recast early if the slam point is good and your team can reach it.

Track the Risk of Terrain

Crashing into terrain ends the charge and stuns you briefly. That can be fine if you still hit enemies with the slam. It is bad if it stops you short and strands you.

[caption align="aligncenter" width="800"]Using Sion's kit smartly turns him from a mere meatshield into an incredibly oppressive presence in team fights. Credit: Riot Games[/caption]

Tips for Fighting as Sion

Sion relies on timing and placement. His kit rewards planning more than fast reactions.

Roar of the Slayer is a strong setup tool for Decimating Smash. Soul Furnace can be used during your other abilities, so you can shield while committing instead of pausing.

Keep the audio cue of your ultimate in mind. Enemies hear it globally, so surprise comes more from angle and fog of war than from silence.

Tips for Fighting Against Sion

If you face Sion, the best answers come from managing his windows.

Interrupting or forcing an early Q release reduces its impact. Breaking Soul Furnace’s shield quickly prevents the detonation damage. If that is not possible, disengage before it pops.

After Sion “dies,” reposition and prepare for his zombie form. Do not stand near him and assume the threat is gone.

[caption align="aligncenter" width="800"]Credit: Riot Games[/caption]

Sion Counters

Recommended Item and Rune Notes from the Kit Details

Sion benefits from items that give him durability. Combined with his stacking health passive, Sion can become a very effective wall very quickly. This build recommendation assumes the Tank Sion build rather than AD or Lethality Sion.

Hollow Radiance is the go-to first core currently. Not only does it give a lot of the stats that Sion loves — health, magic resist, ability haste and health regen — the active passive allows him to stick to enemy champions more easily. Coupled with the Immolate DOT, it's almost tailor-made for tanks like Sion.

Other tank items such as Unending Despair, Jak'Sho, and Overlord's Bloodmail are typical second defensive items for Sion. For offensive options, Sion typically edges towards Titanic Hydra for the additional waveclear and scaling damage (scales with health).

For runes, Grasp of the Undying is the clear winner for Tank Sion. Scaling health and improved trade power in lane are two reasons to pick it over any other rune. Coupled with Overgrowth and Conditioning, Sion will scale quickly into the frontline wall that cannot be breached.

Takeaway: How to Win Fights With Sion

Sion works when you control space first, then force the fight. Use E to shape movement, W to survive the commit, and Q to lock down key areas. If they focus you down, make Glory in Death count by spending Death Surge on a target you can reach and punish.

Play with that mindset and Sion stays useful even when the enemy thinks the job is done.

---

Follow Strafe Esports for the latest League of Legends news, and our X account for the latest content and coverage. Also, stay tuned to Strafe's YouTube channel for exclusive interviews, press conferences, and more.

Featured Image Credit: League of Legends Fandom