After being killed, Sion will temporarily reanimate with rapidly decaying Health. His attacks become very rapid, heal him, and deal bonus damage based on his target's maximum Health.
QDecimating Smash10/9/8/7/6s45
Sion charges a powerful swing in an area in front of himself that will deal damage to enemies when released. If he charges for enough time, enemies hit by the swing will also be knocked up and stunned.
WSoul Furnace15/14/13/12/11s75/80/85/90/95
Sion shields himself and can reactivate after 3 seconds to deal Magic Damage to enemies nearby. When Sion kills enemies, he passively gains maximum Health.
ERoar of the Slayer12/11/10/9/8s35/40/45/50/55
Sion fires a short range shockwave that damages and slows and reduces the Armor of the first enemy hit. If the shockwave hits a minion or monster, it will be knocked back, damaging, slowing, and reducing the Armor of all enemies that it passes through.
RUnstoppable Onslaught140/100/60s100
Sion charges in a direction, ramping up speed over time. He can steer his charge slightly with the mouse cursor location. When he collides with an enemy he deals damage and knocks them up based on the distance he has charged.
Bug Fix: Fixed a bug where the SFX was not audible in Spectator Mode.
26.21· Oct 21, 2026Buffed
Stats
Health growth increased to 95 from 87.Buff
Unstoppable Onslaught
Base damage modifier increased to 0% to 200% from 0% to 166.67%.Buff
Maximum base damage increased to 450 to 1350 from 400 to 1200
.
Buff
Bonus AD modifier increased to 0% to 200% from 0% to 100%.Buff
Maximum bonus AD ratio increased to 120% bonus AD from 80%.Buff
Bug Fix: Tooltip now displays the correct minimum and maximum bonus AD ratios (40-120%). It displayed an incorrect Bonus AD Scaling (60%-120%). It was never actually changed in patch 25.16 beyond the tooltip.
Bug Fix: Updated SFX to use the base skin's ult SFX when playing against him to improve clarity.
26.13· Jun 24, 2026Nerfed
Decimating Smash
Minimum base damage reduced to 30 to 90 from 40 to 120.Nerf
Soul Furnace
Mana cost increased to 75 to 95 from 65 to 85.Nerf
26.8· Apr 15, 2026
Soul Furnace
Bug Fix: Tooltip now denotes the health per stack in green.
25.23· Nov 19, 2025Adjusted
Glory in Death
Bug Fix:Death Surge no longer incorrectly triggers effects that activate from ultimate ability casts upon expiring (regardless of the slot used).Nerf
Decimating Smash
Monster damage increased to 165% from 150%.Buff
35 older patches
25.21· Oct 22, 2025Buffed
Glory in Death
Undocumented / Bug Fix: Casting Death Surge no longer prevents the cast of effects that activate from ultimate ability casts until Sion has cast Unstoppable Onslaught twice without having cast Death Surge in the interim.Buff
Undocumented / New Effect:Death Surge triggers effects that activate from ultimate ability casts upon expiring.Buff
25.20· Oct 8, 2025Nerfed
Glory in Death
Undocumented: Death Surge now once again prevents the cast of effects that activate from ultimate ability casts until Sion has cast Unstoppable Onslaught twice without having cast Death Surge in the interim.Nerf
25.19· Sep 24, 2025Buffed
Glory in Death
Bug Fix: Casting Death Surge no longer prevents the cast of effects that activate from ultimate ability casts until Sion has cast Unstoppable Onslaught twice without having cast Death Surge in the interim.Buff
25.16· Aug 13, 2025Buffed
Glory in Death
Base health cost per tick reduced to 2 to 19 from 2.3 to 24.4.Buff
Roar of the Slayer
Armor reduction increased to 25% from 20%.Buff
Unstoppable Onslaught
Bug: Tooltip now mentions that the minimum bonus AD ratio increased to 60% bonus AD from 40%. Actual ratio unchanged.
Bug: Tooltip now mentions that the maximum bonus AD ratio increased to 120% bonus AD from 80%. Actual ratio unchanged.
25.15· Jul 30, 2025Buffed
Unstoppable Onslaught
Bug Fix: Now properly affects enemies casting The Show Stopper when colliding with them. Previously, Sion would collide with the target and end his charge (appropriately) but apply no effects to them, which is incorrect.Buff
25.11· May 29, 2025Buffed
Decimating Smash
Bug Fix: Issuing an attack-move command during the charge no longer incorrectly causes the ability to recast.Buff
Adjustments made to his model and rig to make his armor look, move, and feel more like armor.
Adjustments made to his fire and VFX elements throughout his kit.
25.4
Stats
Base health regeneration increased to 9 from 7.5.
Base armor increased to 36 from 32.
14.19
Decimating Smash
Bug Fix: No longer forcibly charges the ability for its full duration when respawning and without player input if he cast Death Surge on the Q slot before dying.
14.14
Glory in Death
Bug Fix: Is no longer sometimes unable to issue movement commands after the zombie state has expired.
Soul Furnace
Damage health ratio increased to 14% of target's maximum health at all ranks from 10 to 14%.
14.13
Glory in Death
Bug Fix: Corpse is no longer sometimes a valid movement collision target.
14.10
Unstoppable Onslaught
Bug Fix: Is no longer interrupted by Null Sphere.
14.6
Decimating Smash
Minimum AD ratio changed to 40 to 80% AD from 45 to 75%.
Maximum AD ratio changed to 120 to 240% AD from 135 to 225%.
Soul Furnace
Base shield reduced to 60 to 120 from 60 to 160.
Shield health ratio increased to 8 to 16% maximum health from 8 to 12%.
14.4
Soul Furnace
Undocumented / Bug Fix: No longer grants stacks from killing Voidmite.
14.2
Glory in Death
Bug Fix: Movement speed no longer decays faster if other effects forcing stat updates acted on him at the same time.
13.9
Glory in Death
Base health cost per tick increased to 2.3 to 24.4 from 2 to 19.
13.6
Unstoppable Onslaught
Bug Fix: Crowd control immunity now properly resists allied crowd control as well.
13.1
Stats
Base health increased to 655 from 615.
Decimating Smash
Maximum base damage increased to 90 to 350 from 70 to 330.
12.23
Stats
Base mana increased to 400 from 330.
Mana growth increased to 52 from 42.
Decimating Smash
Minimum base damage increased to 40 to 120 from 30 to 110.
Maximum base damage unchanged.
12.16
Unstoppable Onslaught
Bug Fix: Fixed an oversight where the server would still accept attack commands to alter Sion's otherwise-restricted movement.
This fixes an exploit where cheaters could deliberately input these orders through their means to fully control Sion's movement.
12.14
General
Bug Fix: No longer becomes unable to attack for 0.25 seconds shortly after entering champion combat.
Decimating Smash
Bug Fix: No longer prevents Soul Furnace and its Soul Furnace 2 from being cast for a brief moment after releasing the charge.
Roar of the Slayer
Bug Fix: No longer locks Sion out of attacking, moving and casting movement spells for up-to 0.25 seconds after the missile is fired.
This fixes several bugs where non-crowd control effects that prevent Sion from attacking or moving (e.g. Decimating Smash, Teleport) were having those disables ignored for 0.25 seconds after the disable from Roar of the Slayer wore off.
Moving during Decimating Smash for this reason cancelled the channel.
Unstoppable Onslaught
12.12
Glory in Death
Bug Fix: Corpse is no longer an obstacle to other units' pathing.
12.10
Stats
Base health increased to 615 from 545.
Health growth increased to 87 from 73.
Armor growth increased to 4.2 from 3.
Magic resistance growth increased to 2.05 from 1.25.
Soul Furnace
Shield health ratio reduced to 8 to 12% maximum health from 10 to 14%.
Roar of the Slayer
Bug Fix: Can no longer knockback Rift Herald.
Bug: This includes the player-summoned Rift Herald which is otherwise not immune to CC.
12.9
Glory in Death
Bug Fix: Fixed a bug where he wasn't dealing reduced damage against structures despite displaying the correct numbers.
Glory in Death
New Effect: Damage against structures is now reduced to 40% damage while in zombie form.
This includes attacks as well as on-hit effects that can be applied to structures, such as Demolish, Titanic Hydra and the magic damage based on AP conversion based on adaptive force.
Possible Bug: This includes true damage from sources such as Elixir of Sorcery.
Roar of the Slayer
12.8
Glory in Death
Bug Fix: Enemy champions that deal lethal damage to trigger the zombie state are no longer considered to deal damage to the source when the effect ends.
11.21
Soul Furnace
Shield health ratio increased to 10 to 14% maximum health from 8 to 12%.
11.20
Decimating Smash
Undocumented/Bug Fix: Tooltip no longer incorrectly uses a higher AD ratio on ranks 2-5 of the damage calculation.
Soul Furnace
Undocumented/Bug Fix: Tooltip no longer incorrectly factors in Sion's maximum health as bonus damage on the recast's damage calculation.
11.19
Soul Furnace
Shield strength increased to 60 to 160 from 50 to 150.
11.14
Glory in Death
Bug Fix:Sterak's Gage Lifeline no longer refreshes its readiness upon death, which caused it to always trigger again during Glory in Death even if on cooldown.
11.13
Glory in Death
Bug Fix: Fixed a bug where the respawned Sion could be knocked back to his previous location by certain abilities, if Glory in Death lasted longer than his death timer's duration.
Blunt Force Trauma no longer pulls a vanished Sion from his respawn location.
Disdain no longer pulls respawned Sion if he is more than 2000 units away.
Stretching Strikes still has this issue.
11.8
Unstoppable Onslaught
Undocumented/New Effect: Now causes the player's HUD to become transparent during the channel.
Bug Fix: Now properly knocks up really big targets.
11.3
Decimating Smash
Bug Fix: Hitbox can no longer be manipulated to appear in a different location further away.
11.1
Stats
Base magic resistance reduced to 32 from 32.1.
10.23
Roar of the Slayer
Bug Fix: Is no longer able to regain control during certain types of disables for a moment shortly after casting Roar of the Slayer.
However, he can still interrupt Decimating Smash channel like this.
10.22
Roar of the Slayer
Bug Fix: Sentry turrets are no longer pushed towards their facing direction by Roar of the Slayer.
Bug Fix: The Show Stopper can no longer illegally interrupt the charge.Buff
Bug Fix:Stun duration is no longer 0.75 to 1.75 seconds instead of the normal 0.25 to 1.75 when colliding with Unstoppable Onslaught 2.
Bug Fix: Fixed an oversight where the server would still accept attack move commands to alter Sion's otherwise-restricted movement.
This fixes an exploit where cheaters could deliberately input these orders through their means to fully control Sion's movement.
Delayed attack move packets can thus also no longer change Sion's movement during Unstoppable Onslaught a single time.
Bug Fix: Tooltip now displays the proper duration of the armor reduction debuff.
