Best Sion Build & Guide (2026) — League of Legends

Sion is League of Legends' Undead Juggernaut — a CC-heavy, infinite-scaling tank who charges into battle with Decimating Smash, shields himself with Soul Furnace's permanent health stacking, shreds armor with Roar of the Slayer, and barrels across the map with Unstoppable Onslaught. He is one of the most unique tanks in the game with infinite HP scaling from Soul Furnace's passive that rewards strong farming across the entire game. Sion is played primarily as a top laner (50.42% win rate on OP.GG, 51.51% on LoLalytics Patch 16.6 Emerald+, B Tier ranked 50th of 103 top laners) with a 4.77% pick rate and 1.06% ban rate. His secondary role is mid lane (54.33% WR on LoLalytics). Whether you want to become an unkillable frontline with thousands of bonus health from Soul Furnace stacking, lock down entire teams with Decimating Smash's massive AoE knockup, or charge across the map with Unstoppable Onslaught for cross-map flanks, this guide covers everything you need to master the Undead Juggernaut in 2026.

Sion Overview

Sion operates as a CC-heavy tank, infinite-scaling juggernaut, and teamfight frontliner whose power comes from his massive crowd control kit, permanent health stacking from Soul Furnace, and post-death threat from Glory in Death. He is played primarily as a top laner (50.42% win rate on OP.GG, 51.51% on LoLalytics Emerald+, ranked 50th out of 103 top laners) with niche viability as a mid laner (54.33% WR on LoLalytics). His ban rate of 1.06% is low, reflecting his balanced state despite his reliable teamfight presence.

Unlike traditional top laners who rely on dueling and trading, Sion provides massive AoE crowd control with Decimating Smash's fully charged knockup, infinite health scaling through Soul Furnace's passive that permanently adds HP per minion kill, armor shredding and long-range poke with Roar of the Slayer, cross-map engage with Unstoppable Onslaught, and a unique post-death threat through Glory in Death that lets him keep fighting after dying. Sion wins by stacking health throughout the game and becoming progressively tankier until he is nearly impossible to kill in the late game.

Glory in Death (Passive) activates upon Sion's death — he enters stasis for 1.5 seconds, then reanimates with 100% max health that rapidly decays over up to 60 seconds. During zombie form, Sion gains 1.75 fixed attack speed, 100% life steal, and deals 10% target max health on-hit damage (capped at 75 against non-champions). He is ghosted and can activate Death Surge for 67% bonus movement speed decaying over 2.376 seconds (100-second cooldown). Structure damage is reduced to 40%. Glory in Death is what makes Sion uniquely threatening — even after dying, his zombie form deals devastating on-hit damage that can finish off low-health enemies or chunk towers, making every fight a lose-lose for opponents who invest resources into killing him.

Decimating Smash (Q) has a 10/9/8/7/6-second cooldown and costs 45 mana at all ranks. Sion charges for up to 2 seconds, expanding the range from 500 to 850 units. An uncharged Q deals 40/60/80/100/120 (+40/50/60/70/80% AD) physical damage and slows by 50% for 0.25 seconds. A fully charged Q deals 90/155/220/285/350 (+120/150/180/210/240% AD) physical damage, knocks up enemies for 0.5-1.0 seconds based on charge time, and stuns for 1.25-2.25 seconds based on charge time. Deals 165% damage to monsters and 60% to minions. If interrupted, the cooldown is reduced to 2 seconds. Decimating Smash is one of the strongest non-ultimate CC abilities in the game — a fully charged Q delivers a 2.25-second stun in a massive AoE that can hit entire teams standing in chokepoints, making Sion a devastating teamfight initiator who can lock down multiple priority targets with a single ability.

Soul Furnace (W) has a 15/14/13/12/11-second cooldown and costs 65/70/75/80/85 mana. Passively, Sion permanently gains 4 bonus health per minion kill and 15 bonus health per large unit kill or champion takedown. When activated, Sion gains a shield for 6 seconds equal to 60/75/90/105/120 (+40% AP) (+8/10/12/14/16% max HP). After 3 seconds, the shield can be recast to detonate, dealing 40/65/90/115/140 (+40% AP) (+14% target max HP) magic damage to nearby enemies within a 525 radius. Minion and monster damage is capped at 400. Soul Furnace is what defines Sion's identity as an infinite-scaling tank — the permanent health stacking means every CS permanently increases his tankiness, and by 30 minutes a farming Sion can accumulate 500-800+ bonus HP, making his percentage-based shield increasingly massive as the game progresses.

Roar of the Slayer (E) has a 12/11/10/9/8-second cooldown and costs 35/40/45/50/55 mana. Sion fires a short-range shockwave that deals 65/100/135/170/205 (+55% AP) magic damage, slows enemies by 40/45/50/55/60% for 2.5 seconds, and reduces their armor by 25% for 4 seconds. If the shockwave hits a non-epic monster or minion, it knocks the unit back up to 1350 units, dealing damage and stunning for 0.75 seconds to all enemies hit. Roar of the Slayer is Sion's ranged poke and utility tool — the 25% armor shred sets up devastating follow-up from Decimating Smash and allied AD damage, and knocking minions into enemy champions in lane provides safe, long-range harass that chunks squishies from 1350 range without Sion needing to overextend.

Unstoppable Onslaught (R) has a 140/100/60-second cooldown and costs 100 mana at all ranks. Sion charges forward for up to 8 seconds, becoming CC-immune, unstoppable, and ghosted while accelerating to a maximum speed of 950. Upon reaching an enemy champion or hitting terrain, Sion deals 150/300/450 (+60% bonus AD) to 400/800/1200 (+120% bonus AD) physical damage based on charge time, slows by 40/45/50% for 3 seconds, and stuns for 0.25-1.75 seconds based on charge time. Colliding with terrain self-stuns Sion for 0.5 seconds. Unstoppable Onslaught is one of the most impactful engage tools in the game — the ability to charge across the entire map at 950 movement speed while being completely CC-immune allows Sion to initiate teamfights from fog of war, flank from unexpected angles, or return to lane instantly after a recall.

Strengths

• Soul Furnace's passive makes Sion one of only 16 champions with infinite scaling — permanently gaining 4 HP per minion kill and 15 HP per large unit or champion takedown means Sion's effective health grows every minute of the game, and by 30+ minutes a farming Sion accumulates 500-800+ bonus HP that makes his percentage-based W shield increasingly massive — In ultra-late-game scenarios, Sion can reach 6,000-7,000+ max HP with full tank items plus Soul Furnace stacks, making him the single tankiest champion in the game
• Decimating Smash's fully charged knockup is one of the strongest non-ultimate CC abilities in the game — a 2.25-second stun in a massive AoE that deals up to 350 (+240% AD) physical damage can lock down an entire team in chokepoints around Baron, Dragon, or jungle corridors, winning teamfights before they begin — The ability to zone enemies out of areas simply by channeling Q forces opponents to either walk into the stun zone or give up positioning, creating constant pressure in teamfights and objective contests
• Unstoppable Onslaught provides cross-map engage and flanking that no other tank in the game can match — charging at 950 movement speed while being completely CC-immune for up to 8 seconds means Sion can initiate from fog of war across the entire map, bypassing wards and vision control to deliver devastating engages that enemies cannot react to — R can also be used defensively to escape ganks or offensively to return to lane instantly after a recall, giving Sion unmatched map mobility for a tank
• Glory in Death's zombie form creates a unique lose-lose scenario for enemies — killing Sion does not end the threat, as his reanimated form deals 10% target max HP on-hit with 100% life steal and 1.75 attack speed, meaning enemies who invest cooldowns to kill him must then deal with a zombie that can kill carries or destroy towers in seconds — Sion's passive makes dive compositions particularly risky to play against, as tower-diving Sion means fighting his zombie form under tower with no escape

Weaknesses

• Decimating Smash has a 2-second charge time that is both interruptible and heavily telegraphed — any displacement, knockup, or stun cancels the channel and puts it on a 2-second cooldown, and enemies can simply walk out of the growing indicator, making it unreliable against mobile champions like Fiora, Riven, and Irelia who can dash out and punish the channel — Against competent players, landing a fully charged Q in lane requires either Roar of the Slayer's slow, an allied setup, or Bush vision denial to hide the charge animation
• Sion has no mobility outside of Unstoppable Onslaught — his base movement speed of 345 and complete lack of dashes, blinks, or movement speed steroids means he is easily kited by ranged champions and vulnerable to being peeled away from priority targets in teamfights — Without R available, Sion relies entirely on Flash-Q combos to engage, and if both are on cooldown, he becomes a walking stat-check who can be ignored by mobile teams
• Sion's damage output is low without fully charged Q — his base AD scalings are mediocre, his Q deals 60% reduced damage if not fully charged, and his primary reliable damage sources (E and W detonation) scale with AP and max HP that tank builds do not prioritize — Against sustain-heavy top laners like Dr. Mundo, Garen, and Aatrox who can heal through Sion's damage, he struggles to generate kill pressure without jungle assistance
• Sion's early laning phase is vulnerable to aggressive all-in champions — his Q channel is easily interrupted, his W shield has a 15-second cooldown at rank 1 and requires 3 seconds before detonation, and his E's 35 mana cost adds up quickly when used for poke, leaving him mana-hungry and unable to trade effectively against early-game bullies like Darius, Renekton, and Olaf — Sion often needs to concede early trades and focus on farming for Soul Furnace stacks, accepting a weak laning phase in exchange for late-game scaling

Recommended Runes

Grasp of the Undying (Resolve) — Highest Win Rate

The recommended rune page for Sion top is Grasp of the Undying in the Resolve tree, which achieves a 52.17% win rate with 86.7% pick rate on OP.GG. Grasp of the Undying synergizes perfectly with Sion's identity as an infinite-scaling tank — every 4 seconds of combat, Sion's next auto-attack deals bonus magic damage based on max HP, heals him, and permanently increases his max HP, stacking with Soul Furnace's passive for compounding health growth throughout the game.

• Grasp of the Undying — After 4 seconds in combat, the next auto-attack deals bonus magic damage equal to 3.5% of max HP, heals for 2% max HP, and permanently grants 5 bonus HP. Grasp of the Undying is the optimal keystone for Sion because the permanent health gain compounds with Soul Furnace's passive stacking — every Grasp proc adds to the health pool that Soul Furnace's shield scales from, creating a feedback loop where more HP means a bigger shield means more effective health means even more value from Grasp procs.
• Demolish — Charges a powerful attack against towers when near them for 3 seconds, dealing bonus physical damage based on max HP. Demolish (51.0% WR, 67.8% pick rate) transforms Sion into one of the best tower destroyers in the game — his massive Soul Furnace-stacked health pool makes Demolish procs deal enormous damage to structures, and combined with his passive zombie form, Sion can take plates and towers faster than almost any other tank.
• Conditioning — After 12 minutes, gains bonus armor and magic resistance, increased by a percentage. Conditioning (51.1% WR, 62.2% pick rate) provides a mid-game defensive spike that aligns with Sion's scaling identity — the flat and percentage bonuses amplify the value of his tank itemization after his first core items come online.
• Overgrowth — Permanently gains bonus health for every 8 enemy units that die nearby, and upon reaching a threshold, gains additional percentage max health. Overgrowth (51.3% WR, 80.8% pick rate) adds yet another permanent health stacking mechanic to Sion's kit — combined with Soul Furnace's passive and Grasp procs, Overgrowth accelerates Sion's health scaling to reach massive totals by the late game.

Secondary — Inspiration

• Approach Velocity — Grants bonus movement speed toward movement-impaired enemy champions. Approach Velocity synergizes with Sion's E slow (40-60% for 2.5 seconds) and Q slow (50% for 0.25 seconds on uncharged), letting him close the gap to follow up his ranged E poke with Decimating Smash charges or auto-attacks for Grasp procs.
• Cash Back — Grants gold efficiency on item purchases. Cash Back provides economic acceleration that helps Sion reach his tank item power spikes faster, which is critical for a champion who needs multiple completed items to fulfill his frontline role.

Stat Shards

• Attack Speed — Bonus attack speed improves Sion's ability to proc Grasp of the Undying consistently and last-hit minions for Soul Furnace stacks. 50.7% win rate, 90.5% pick rate.
• Adaptive Force — Bonus adaptive force converts to AD, increasing Decimating Smash's damage and improving last-hitting for Soul Furnace stacking. 50.6% win rate, 90.4% pick rate.
• Health Scaling — Bonus scaling health compounds with Soul Furnace's passive, Grasp, and Overgrowth for maximum late-game tankiness. 50.5% win rate, 82.7% pick rate.

Recommended Item Build

Based on data from ranked Sion matches tracked across multiple stat sites on Patch 16.6, the Sunfire Aegis rush into Unending Despair has the highest win rates. Here are the optimal build paths.

Standard Build

#### Early Game (0-10 min)

• Doran's Shield — Grants health, health regeneration, and a passive that heals after taking damage from enemy champions. Doran's Shield (50.96% WR, 80.7% pick rate) is the standard starting item for Sion because the sustain helps him survive the laning phase against poke and all-in champions while he farms for Soul Furnace stacks.
• Health Potion — Provides additional sustain through early laning where Sion may take harass while charging Decimating Smash or farming in melee range.

#### Core Build (10-20 min)

• Sunfire Aegis — Grants health, armor, magic resistance, and a passive that deals AoE magic damage to nearby enemies. Sunfire Aegis is Sion's most important first item because the immolate passive deals continuous damage around him during teamfights and skirmishes, complementing his role as a frontliner who stands in the middle of enemy teams with Decimating Smash charges and Soul Furnace shields.
• Plated Steelcaps — Grants armor and reduced damage from auto-attacks. Plated Steelcaps (52.69% WR) are the standard boots against AD-heavy compositions, reducing auto-attack damage from marksmen and bruisers who target the frontline. Take Boots of Swiftness for mobility and slow resistance when facing kiting-heavy teams, or Mercury's Treads against heavy CC and AP compositions.
• Unending Despair — Grants health, armor, and a passive that drains nearby enemies' health in combat. Unending Despair is Sion's core second item because the drain passive synergizes with his frontline playstyle — standing in the middle of teamfights with Sunfire Aegis and Unending Despair creates layered AoE damage while healing Sion, making him extraordinarily difficult to kill during extended fights.

#### Late Game (25+ min)

• Thornmail — Grants health, armor, and applies Grievous Wounds to enemies who attack Sion. Thornmail (57.12% WR in 3-item combo with Sunfire + Unending Despair) is the highest win rate third item against healing-heavy compositions, reflecting the damage back to auto-attackers while cutting their sustain.
• Jak'Sho, The Protean — Grants health, armor, magic resistance, and a passive that increases resistances during combat. Jak'Sho (54.79% WR in 3-item combo) provides the best overall tankiness when Sion needs to survive against both AD and AP threats, with ramping resistances that reward his extended teamfight presence.
• Titanic Hydra — Grants health, attack damage, and a passive that deals bonus damage based on max health on auto-attacks. Titanic Hydra (58.72% WR as 4th+ item) converts Sion's massive Soul Furnace-stacked health pool into damage output, making him a split-push threat who can clear waves instantly and duel side laners while maintaining his tankiness.

Highest Win Rate 3-Item Combinations

The highest win rate full builds include Sunfire Aegis + Unending Despair + Thornmail (57.12% WR, 2.93% pick rate), Sunfire Aegis + Unending Despair + Jak'Sho (54.79% WR, 5.24% pick rate), and Hollow Radiance + Unending Despair + Jak'Sho (51.77% WR, 4.19% pick rate). Build Thornmail against healing-heavy compositions, Jak'Sho for balanced resistance needs, and consider Hollow Radiance instead of Sunfire Aegis when facing AP-heavy teams.

Ability Priority

Top Lane: Q > W > E (R at 6, 11, 16)

1. Decimating Smash (Q) — Max first or second depending on playstyle. Each rank increases uncharged damage from 40 to 120 and fully charged damage from 90 to 350, while reducing cooldown from 10 to 6 seconds. Q max provides Sion's highest damage output and strongest CC with shorter cooldown on his primary trading and teamfight ability.
2. Soul Furnace (W) — Max first or second. The W-max-first approach (54.49% WR, 39.18% pick rate) has the highest win rate because each rank increases the shield from 60 (+8% max HP) to 120 (+16% max HP) and detonation damage from 40 (+14% target max HP) to 140 (+14% target max HP), while reducing cooldown from 15 to 11 seconds. Maxing W first doubles the shield strength percentage from max HP, making Sion significantly tankier in trades and teamfights as his Soul Furnace stacks grow.
3. Roar of the Slayer (E) — Max last. Each rank increases damage from 65 to 205, slow from 40% to 60%, and reduces cooldown from 12 to 8 seconds. The 25% armor shred does not change with rank, and the 40% slow at rank 1 is already effective for setting up Q charges, so E max last is correct.
4. Unstoppable Onslaught (R) — Level at 6, 11, and 16. Each rank increases minimum damage from 150 to 450, maximum damage from 400 to 1200, and reduces cooldown from 140 to 60 seconds. Level 6 is a significant power spike as Unstoppable Onslaught provides cross-map engage, and the rank 3 cooldown of 60 seconds at level 16 allows Sion to use R in almost every fight.

Level-by-level order: W, Q, E, Q, Q, R, Q, W, Q, W, R, W, W, E, E, R, E, E.

Summoner Spells

• Flash — Flash is essential on Sion for Flash-Q combos that catch enemies off guard — Flash while channeling a fully charged Q to reposition the knockup zone onto enemies who thought they were safe. Flash also provides an escape when Sion's Q is interrupted and he is caught in a bad position. Taken in virtually every game.
• Teleport — Teleport is the standard secondary summoner spell (50.69% WR, 86.12% pick rate) because Sion needs Teleport to maintain wave control in top lane, join cross-map teamfights, and return to lane after dying (especially since his passive zombie form often pushes him away from his wave). Teleport also enables split-push plays where Sion pushes a side lane and Teleports to objectives. Take Ignite (52.38% WR, 6.53% pick rate) for stronger kill pressure in lane against matchups where early aggression can snowball a lead.

Playstyle Tips

Early Game / Laning Phase (0-14 min)

Sion's early game is about farming safely for Soul Furnace stacks, using Roar of the Slayer to poke and armor-shred enemies at range, and looking for fully charged Decimating Smash knockups when enemies overextend or misstep.

Start Soul Furnace (W) at level 1 for the permanent health stacking passive — every minion kill from the first wave starts building Sion's infinite scaling. Take Decimating Smash (Q) at level 2 for wave clear and trading — charge Q in brush or fog of war to deny enemies the visual indicator and land surprise knockups. Take Roar of the Slayer (E) at level 3 to complete the E-Q combo that slows enemies into a follow-up Q charge.

In most matchups, Sion should use E to knock minions into enemies for ranged poke while farming for Soul Furnace stacks. The 25% armor shred from E sets up Q follow-ups and allied jungle ganks. Against melee champions, Sion can charge Q from bushes or while enemies go for last hits, punishing their predictable positioning. Against ranged champions, focus on farming under turret and using E for safe poke while waiting for level 6 where Unstoppable Onslaught provides all-in kill pressure.

Proc Grasp of the Undying as often as possible by entering combat with minions for 4 seconds, then auto-attacking the enemy champion for the bonus damage, healing, and permanent HP. Every Grasp proc compounds with Soul Furnace stacking to accelerate Sion's scaling.

Mid Game & Objectives (14-25 min)

Mid-game Sion with Sunfire Aegis, boots, and Unending Despair is a teamfight-controlling frontline tank who zones enemies with Decimating Smash charges, engages from long range with Unstoppable Onslaught, and becomes progressively harder to kill as Soul Furnace stacks accumulate.

Sion's mid-game strategy revolves around grouping for objectives and using Unstoppable Onslaught for picks and engages. The Sunfire plus Unending Despair two-item spike makes Sion a formidable frontliner who deals sustained AoE damage simply by standing near enemies while soaking enormous amounts of damage with his Soul Furnace shield.

Before major teamfights, look for opportunities to use Unstoppable Onslaught from fog of war or flanking positions — a long-range R into a packed enemy team followed by a fully charged Q can single-handedly win teamfights by CC-locking multiple targets for 3+ seconds. The ideal teamfight combo is: R into the enemy backline for the initial stun, immediately begin charging Q on the stunned targets for a guaranteed fully charged knockup, W shield to absorb incoming damage, then E the highest priority target for the 25% armor shred to maximize allied follow-up damage.

In teamfights, your role is primary engage and frontline — soak damage with Soul Furnace's percentage-based shield while dealing Sunfire and Unending Despair AoE damage, and look for multi-champion Q knockups in chokepoints. Use E to peel for carries by slowing and armor-shredding assassins who dive your backline.

Late Game (25+ min)

Late-game Sion with full tank items and 500-800+ bonus HP from Soul Furnace stacking is a nearly unkillable frontline colossus who controls teamfights with massive CC chains and becomes the tankiest champion on the map.

In the late game, Sion's Soul Furnace stacks have accumulated to the point where his shield absorbs thousands of damage, his Grasp procs deal significant bonus damage from his enormous HP pool, and enemies need to commit multiple members to bring him down. Even after dying, Glory in Death's zombie form with 10% max HP on-hit and 100% life steal can finish off low-health enemies or destroy objectives.

In teamfights, prioritize landing multi-champion Decimating Smash knockups in chokepoints around Baron and Dragon — a fully charged Q on 3+ enemies wins the fight outright. Use Unstoppable Onslaught to cut off enemy escape routes or engage from unexpected angles. Save Soul Furnace detonation for when enemies are grouped on top of you — the 14% target max HP damage hits every enemy in range for devastating AoE burst.

Around objectives like Baron and Elder Dragon, Sion excels at zoning enemies away from the pit with Decimating Smash charges and Roar of the Slayer poke. Position in chokepoints where enemies must walk through your Q zone to contest the objective, and use Unstoppable Onslaught to punish enemies who try to steal by charging through the pit entrance for a guaranteed knockup into the wall.

Matchups

Top Lane

#### Favorable

• Shyvana — Sion wins approximately 61.3% against Shyvana top. Shyvana top lacks the crowd control to interrupt Sion's Decimating Smash charges and cannot match his teamfight CC presence. Sion's Roar of the Slayer poke and armor shred force Shyvana to take unfavorable trades, and his Soul Furnace stacking outscales her in pure tankiness as the game progresses.
• Jayce — Sion wins approximately 55.8% against Jayce. Despite Jayce's ranged poke advantage, Sion's Doran's Shield sustain and Soul Furnace shield absorb his harass effectively. Sion outscales Jayce significantly with infinite HP stacking and becomes unkillable in the mid-to-late game, while Jayce's damage falls off against full tank itemization.
• Pantheon — Sion wins approximately 56.8% against Pantheon. Pantheon's early all-in pressure is strong, but Sion's Soul Furnace shield absorbs much of his burst combo, and Pantheon falls off dramatically after the early game while Sion's infinite scaling ensures he becomes progressively stronger. Once Sion has Sunfire Aegis, Pantheon cannot threaten him in side lane.

#### Even

• Mordekaiser — Sion fights approximately even against Mordekaiser (~50% WR). Mordekaiser's Death Realm isolates Sion away from his team, but Sion's CC chain and Soul Furnace detonation deal significant damage in the 1v1. The matchup often comes down to whether Sion can land fully charged Q inside Death Realm or whether Mordekaiser can out-sustain with passive.
• Dr. Mundo — Sion fights approximately even against Dr. Mundo (~50% WR). Both are infinite-scaling tanks who want to farm and scale, resulting in a low-kill lane where neither can threaten the other. The matchup is decided by teamfight impact — Sion provides more CC while Mundo provides more sustained damage and survivability.

#### Unfavorable

• Fiora — Sion loses to Fiora approximately 55% of the time (~45% WR). Fiora's Riposte (W) parries Sion's fully charged Decimating Smash for a guaranteed stun, and her Vitals proc true damage that bypasses Sion's armor stacking. Fiora also dominates the split push and can duel Sion at every stage of the game, forcing him to group with his team.
• Darius — Sion loses to Darius approximately 53-54% of the time (~46.4% WR). Darius's Apprehend pull interrupts Decimating Smash's channel, his Hemorrhage bleed stacks chunk through Soul Furnace's shield, and Noxian Guillotine's true damage execute ignores all of Sion's tank stats. Darius wins every extended trade in the early and mid game.
• Yone — Sion loses to Yone approximately 55% of the time (~44.9% WR). Yone's mobility lets him dodge Decimating Smash consistently, his mixed damage (physical and magic) is difficult to itemize against, and his sustained DPS with Lethal Tempo shreds through Sion's health pool. Yone also has kill pressure at every stage of the game while Sion relies on team follow-up.

Recent Patch Changes

Sion received significant buffs in Patch 25.16 that improved his overall power level. Glory in Death's base HP decay was reduced from 2.3-24.4 to 2-19 per tick, making his zombie form last longer. Roar of the Slayer's armor reduction was increased from 20% to 25%, substantially improving his utility and allied damage amplification. Unstoppable Onslaught's minimum bonus AD ratio was increased from 40% to 60% and maximum bonus AD ratio from 80% to 120%, making his ultimate significantly more threatening even for tank builds. Earlier in 2025, Patch 25.04 buffed his base HP regen from 7.5 to 9 and base armor from 32 to 36, improving his laning sustain and durability.

His current 50.42-51.51% win rate with a 4.77% pick rate reflects a balanced champion who rewards consistent farming and teamfight positioning — Sion's infinite HP scaling from Soul Furnace ensures he becomes progressively stronger the longer the game lasts, and his massive CC kit with Decimating Smash and Unstoppable Onslaught provides reliable teamfight initiation that wins fights when executed properly. The B-tier ranking on LoLalytics (50th of 103 top laners) confirms he is a solid, reliable pick in the current meta without being overpowered. The statistically dominant Sunfire Aegis into Unending Despair build path creates a durable frontline that deals consistent AoE damage while stacking health for Soul Furnace's scaling shield.

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