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The Void Walker
Release Date:August 7, 2009
Cost:3150 BE
790 RP
Health Regen HealthRegen Mini Icon.png :564.04 (+ 0.5)
Mana Mana Mini Icon.png :397.6 (+ 67)
Mana Regen ManaRegen Mini Icon.png :6 (+ 0.8)
Movespeed MovementSpeed Mini Icon.png :340
Attack Damage AttackDamage Mini Icon.png :58.852 (+ 3.9)
Attack Speed AttackSpeed Mini Icon.png :0.64 (+ 3.7%)
Range Range Mini Icon.png :150
Armor Armor Mini Icon.png :23.376 (+ 3.2)
Magic Resist MagicResist Mini Icon.png :30 (+ 0)


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There is a place between dimensions and between worlds. To some it is known as the Outside, to others it is the Unknown. To most, however, it is called the Void. Despite its name, the Void is not an empty place, but rather the home of unspeakable things, horrors not meant for minds of men. Though such knowledge is lost in modern times, there are those who have unwittingly discovered what lies beyond, and they have been unable to turn away.  Kassadin is such a creature. He was once a man forced to look upon the face of the Void and forever changed by what he saw. Once a seeker of forbidden knowledge, he discovered that what he sought was something else entirely. He is one of the few that has found his way to forgotten Icathia and lived to tell the tale, following the scant breadcrumbs hidden in ancient texts.

Within a decaying cyclopean city, Kassadin found secrets of the kind that he will never share - secrets that made him quake with fear at the visions of things to come that were thrust upon him. The power of the place threatened to consume him forever, but Kassadin took the only route available to him in order to survive - he let the Void inside him. Miraculously, he was able to overcome the alien urges that went with it, and he emerged as something more than human. Though a part of him died that day, he knows that he must protect Valoran from the things scratching at the door, waiting to get in and visit their torments upon the world. They are only one step away... something to which the appearance of the abomination known as  Cho'Gath attests.

If you look upon the Void, you can't put it behind you. If you look upon  Kassadin, he is probably already there.
There is a place between dimensions, between worlds. To some it is known as the Outside, to others it is the Unknown. To most, however, it is called the Void. Despite its name, the Void is not an empty place, but rather the home of unspeakable things, horrors not meant for minds of men. Though such knowledge is lost to the modern day, there are those who have unwittingly discovered what lies beyond and have been unable to turn away.  Kassadin is such a creature, a man once forced to look upon the face of the Void and who was forever changed by it. Once a seeker of forbidden knowledge, he discovered that what he sought was something else entirely. Though a part of him died that day, he knows that he must protect Valoran from the things scratching at the door, waiting to get in and visit their torments upon the world. They are only one step away, something to which the appearance of the abomination known as  Cho'Gath attests.
If you look upon the Void, you can't put it behind you. If you look upon  Kassadin, he is probably already there.


PassiveVoid Stone
(Innate) Kassadin takes 15% reduced magic damage and ignores unit collision.

QNull SphereBanshee's Veil.pngCleanseQss.png
(Active) Kassadin fires an orb of void energy to a single target, interrupting channels and dealing magic damage. The excess energy forms around Kassadin and grants a shield that absorbs magic damage for a duration of 1.5 seconds.
Cooldown: 9 seconds
Range: 650
Projectile Speed: 1400
Cost: 70 / 75 / 80 / 85 / 90 mana
Magic Damage: 70 / 95 / 120 / 145 / 170
(+70% of Ability Power)
Shield Strength: 40 / 70 / 100 / 130 / 160
(+30% of Ability Power)

WNether BladeBanshee's Veil Grey.png
(Passive) Kassadin's melee attacks deal 20 (+0.1 AP) bonus magic damage.

(Active) Nether blade is charged causing Kassadin's next basic attack to deal bonus magic damage while restoring a percentage of his missing mana. Mana restoration is quintupled against champions.
Cost: No Cost
Cooldown: 7 seconds
Mana Restored: (+4 / 5 / 6 / 7 / 8% of missing Mana)
Magic Damage: 40 / 75 / 110 / 145 / 180
(+70% of Ability Power)

EForce PulseBanshee's Veil.pngCleanseQss.png
(Passive) Kassadin draws energy from spells cast in his vicinity, gaining a charge whenever a spell is cast near him, including his own spells.

(Active) Upon reaching 6 charges, Kassadin can emit a pulse of void energy to deal magic damage and slow enemies in an 80° cone in front of him for 1 seconds.
Cost: 80 mana
Cooldown: 6 seconds
Range: 700
Cone Width: 80º
Magic Damage: 80 / 105 / 130 / 155 / 180
(+70% of Ability Power)
Slow: 50 / 60 / 70 / 80 / 90%

RRiftwalkBanshee's Veil.png
(Active) Kassadin blinks to a nearby location, dealing magic damage to enemy units within 150 range. Each subsequent Riftwalk in the next 15 seconds will cost twice the amount of mana and deals bonus damage stacking up to 4 times.
Base Cost: 50 mana
Range: 500
Radius of Damage AoE: 150
Cooldown: 6 / 4 / 2 seconds
Base Magic Damage: 80 / 100 / 120
(+20% of max Mana) (+20% of Ability Power)
Additional Damage Per Stack: 40 / 50 / 60 (+10% of max Mana) (+10% of Ability Power)

Competitive Usage

In Premier Tournaments
Event Bans Picks Wins Losses Win % Picked/Banned in % of Games
Ogn logo.png HOT6iX Champions Spring 2014 27 5 4 1 80 37.6
Riot 2019 logo small.png All-Star Paris 2014 16 1 0 1 0 100
LCS logo small.png 2014 NA LCS Spring Round Robin 71 5 3 2 60 67.3
LCS logo small.png 2014 EU LCS Spring Playoffs 0 2 1 1 50 10
LCS logo small.png 2014 EU LCS Spring Round Robin 81 4 4 0 100 75.2

Patch History


In a world without mana potions (and generally less early mana regeneration), we've identified a few champions for some emergency rations, giving early mana boosts until they can get their footing and purchase items to make up the deficit. This also means we can really understand which champions relied on mana potions as a crutch to limp through the early to mid game, and we can give additional love if necessary.


The following champs have +50 base mana and -3 mana scaling (net -1 mana at level 18):

W's on a shorter cooldown and has a higher ratio.

For being a late-game monster, Kassadin pays perhaps the highest price in terms of his weaknesses, often losing games outright before completing the items he needs to get rolling. We don't want to go overboard, but... here we go. Kassadin buffs.

Nether Blade.png W - Nether Blade

COOLDOWN : 9 seconds 7 seconds
RATIO : 0.6 ability power 0.7 ability power

Riftwalk now has an AP ratio. This ratio scales as you stack Riftwalk.

Kassadin hasn’t been terrorizing games much since he took up Rift-stepping, so we figured it was time to show him some love in the form of supporting his new hobby. While still potent as blinking damage-dealer, Kassadin often falls short due to the somewhat lacking rewards for closing into melee range. We’re liking how a shorter-Ritfwalk’s plays out while skirmishing, so we’re boosting his effectiveness for getting up close and personal.

25px R - Riftwalk

NEW RATIO : Now additionally scales with 0.2 ability power
NEW STACK IT UP : Extra stacks of Riftwalk add 0.1 ability power per stack

R's stack lockout decreased.

"With Kassadin's functionality as a constantly blinking must-answer threat late game still intact, we're looking to facilitate earlier aggressive roams by pulling the lever back a little on Riftwalk's lockout mechanic. "
  • 25px R - Riftwalk
    • EMPOWERED STACK DURATION : 20 seconds 15 seconds

R cooldown and mana costs are down, range up slightly.

"Unlike Riftwalk, we went a little too far last patch. The focus of the changes were to lower the amount of instant mobility Kassadin had access to without changing his long-term movement too dramatically - this patch, we're tuning up his ultimate to put a little spring back into his Riftstep."
  • General
    • VISUALS : Updated model, textures, animations and slight VFX changes for base and all skins
    • ICONS : New ability icons
  • 25px R - Riftwalk
    • COOLDOWN : 7/5/3 seconds 6/4/2 seconds
    • RANGE : 450 500
    • COST : 60 mana 50 mana

v5.4 We're not calling it Riftstep. Rifthop. It's important to note that the mana costs on Riftwalk scale exponentially so while that initial lowered mana cost looks small, it gets real big real fast. Riftskip.

Kassadin is a champion whose fantasy and identity are both defined by a single ability - Riftwalk. While this does makes him super effective as an assassin (as you might expect, ignoring walls and terrain makes it hard to hide your carries from him), it's tough to both respect what makes him unique while also respecting the need for opponents to... fight back. With this change, we're still trying to preserve the dream (one might say a very difficult dream) of letting Kassadin keep his trademark mobility but, unless he finds a specific flank or angle, he also needs to pay respect to the enemy's tank line before rendering his squishy targets Null and Void.
  • Riftwalk.jpg R - Riftwalk
    • RANGE : 700 450
    • BASE COST : 75 mana 60 mana

v5.3 -10 damage on Q.

"Let's talk about Kassadin. Near unparalleled mobility coupled with high damage and precise target selection has historically made Kass among the League's most resilient champions. Right now, our best method of 'gating' this guy (that is, trying to keep him from facerolling over the game) is by intentionally keeping his lane weak in the hopes of staving off what can feel like an inevitable riftwalking nightmare. While we want to preserve Kassadin's mobility-driven identity, he doesn't really have windows of vulnerability necessary for opponents to smack him in the face, meaning most fights are his to lose rather than any outplays his opponents can make.
With all of that said, this is not the change to do that. Sorry. We'll be kicking of some deeper investigations in the future (who'd have thought an ultra-mobile assassin would have game health difficulties), but for now we're just looking to tune him down. Very precisely. "
  • Hand of Baron.png Q - Null Sphere
    • DAMAGE : 80/105/130/155/180 magic damage 70/95/120/145/170 magic damage

Riftwalk now has a longer period of time before it resets its damage / mana cost stacks.

"Although we want Kassadin's iconic strength be his super mobility, we also want him to be thinking hard about when and how often he jumps around."
  • Riftwalk.jpg R - Riftwalk
    • WAS MORE LIKE A RIFTSPRINT 12 seconds ⇒ 20 seconds

W's cooldown has gone up, Force Pulse slows for a lot but for a shorter period of time.

"This guy. Again.

Currently, our focus is on Kass's super snowballing potential where, when he's ahead, he can help both himself and his team succeed by constantly slowing and punching people in the face. We still don't want to go after Kass's iconic Riftwalk (as that's clearly his core strength), but these changes mean Kass will have less offensive windows to go in."

  • NetherBlade.jpg W - Nether Blade
    • COOLDOWN: 6 seconds ⇒ 9 seconds
  • ForcePulse.jpg E - Force Pulse
    • SLOW DURATION: 3 seconds ⇒ 1 second
    • SLOW AMOUNT: 30/35/40/45/50% ⇒ 50/60/70/80/90%

"Up front: We overshot the Kassadin buffs last patch. Specifically, making Kassadin's magic shield stronger ended up making him a little too stifling against a majority of mid lane champions which, in turn, amps up his already strong snowballing power. On that note, while the concept of a magic shield has a strong connection to Kassadin's thematic and strategic niche, we're still examining a way to balance between thematic cohesion and raw champion strength."

  • NullSphere.jpg Q - Null Sphere
    • MAGIC SHIELD: 40/80/120/160/200 (+0.8 ability power) ⇒ 40/70/100/130/160 (+0.3 ability power)

"We're happy with Kassadin's direction as a high-mobility mana-fueled void mage, but he's a little under-equipped for the job. Old Kassadin could survive by blowing up targets (dead targets don't deal damage), but since the rework put more emphasis on his mobility and close combat, he's had some problems sticking around the fight. These changes are to give Kass more opportunities and rewards when he Riftwalks into the fray."

  • General
    • MOVEMENT SPEED: 340 ⇒ 350
    • MANA PER LEVEL: 45 ⇒ 70
  • NullSphere.jpg Q - Null Sphere
    • MAGIC SHIELD: 40/70/100/130/160 (+0.3 ability power) ⇒ 40/80/120/160/200 (+0.8 ability power)
    • BUGFIX: Now correctly interrupts Anivia's Glacial Storm, Twisted Fate's Gate and Urgot's Hyper-Kinetic Position Reverser
  • NetherBlade.jpg W - Nether Blade
    • ACTIVE DAMAGE: 40/65/90/115/140 (+0.6 ability power) ⇒ 40/75/110/145/180 (+0.7 ability power)

Old Kassadin's combination of high mobility, strong disables and high burst damage left his victims with very few to no options against him (other than banning him in every single ranked game), especially when he snowballed ahead. Our focus here is to introduce more counterplay to Kassadin's kit, something we couldn't do with number tweaks alone. For example, lowering Kass's damage doesn't make for an interesting gameplay interaction (it just means you can turn around and smash him in the face if you survive the burst), while increasing his cooldowns means he just needs to wait longer before blowing somebody up.

In the end, we opted for a full-on kit rework to reinforce his core theme as an anti-magic assassin with unrivaled mobility. These changes mean Kassadin must rely on his mobility to pick fights while finding opportunities to dive in and out of combat to take out targets. It's worth stressing: these changes are to make Kassadin less of a "blow someone up when you can" champion and more of a mobile attacker who wants to get in to fight while using Riftwalk to stay safe. Obviously, this is a significant change, so we'll be watching his performance very closely.

We've increased Kassadin's attack range and changed his passive so it no longer grants attack speed but avoids unit collision. We reduced Null Sphere's damage and pulled off the silence, although it will still interrupt channeled abilities. Instead, Null Sphere now grants Kassadin a shield on use. Nether Blade now passively deals bonus magic damage per autoattack and, when activated, deals higher bonus magic damage as well as restoring some of Kassadin's missing mana. No big changes to Force Pulse though we did reduce its damage a bit. Riftwalk, on the other hand, has a lot of changes. We've reduced its cooldown and it now scales with max mana instead of AP. Each stack now doubles the mana cost of the next Riftwalk but we reduced the mana cost and the number of max stacks to compensate. It also no longer refunds mana on hitting enemy champs.

  • General
    • VISUALS: Kassadin's particles have been updated!
    • ATTACK RANGE: 125 ⇒ 150
  • VoidStone.jpg Passive - Void Stone
    • NEW UTILITY: Kassadin now additionally ignores unit collision
    • ATTACK SPEED BONUS: Bonus attack speed per magic damage reduced ⇒ No longer grants attack speed
  • NullSphere.jpg Q - Null Sphere
    • NEW UTILITY: Now additionally grants Kassadin a shield for 1.5 seconds that absorbs 40/70/100/130/160 (+0.3 Ability Power) magic damage
    • NEW UTILITY: Silences the target ⇒ No longer silences, instead it interrupts channel spells
    • DAMAGE: 80/110/140/170/200 (+0.7 ability power) ⇒ 80/105/130/155/180 (+0.7 ability power)
  • NetherBlade.jpg NEW W - Nether Blade
    • PASSIVE: Kassadin's basic attacks draw energy from the void, dealing 20 (+0.1 ability power) bonus magic damage.
    • ACTIVE: Kassadin charges his Nether Blade, causing his next basic attack to deal 40/65/90/115/140 (+0.6 ability power) bonus magic damage and restore 4/5/6/7/8% of his missing mana (increases to 20/25/30/35/40% against champions).
    • COOLDOWN: 6 seconds
    • MANA COST: No cost
    • UTILITY: Resets Kassadin's basic attack timer on activation
  • ForcePulse.jpg E - Force Pulse
    • DAMAGE: 80/120/160/200/240 (+0.7 ability power) ⇒ 80/105/130/155/180 (+0.7 ability power)
  • Riftwalk.jpg R - Riftwalk
    • NEW DAMAGE: 80/100/120 (+0.8 ability power) ⇒ 80/100/120 (+2% maximum mana)
    • NEW STACKING DAMAGE: 50/55/60 (+0.1 ability power) per stack ⇒ 40/50/60 (+1% maximum mana) per stack
    • NEW RIFTWALK STACKS: Costs +100 mana per stack ⇒ Now doubles its mana cost per stack
    • NEW UTILITY: Refunds mana on hitting enemy champions ⇒ No longer refunds mana on hitting enemy champions
    • COOLDOWN: 7/6/5 seconds ⇒ 7/5/3 seconds
    • MANA COST: 100 ⇒ 75
    • MAXIMUM STACKS: 10 ⇒ 4
    • STACK DURATION: 8 seconds ⇒ 12 seconds

We reduced Null Sphere’s damage and silence duration and lowered the damage of Force Pulse.

“We’re currently working on more aggressive changes for Kassadin in the future. In the meantime, these are short term tweaks to knock his power levels down a peg while we continue testing. Maybe, someone, somewhere, will get to play him in a ranked game.”

  • NullSphere.jpg Q - Null Sphere
    • DAMAGE: 80/115/150/185/220 ⇒ 80/110/140/170/200
    • SILENCE: 1.5/1.75/2/2.25/2.5 seconds ⇒ 1/1.25/1.5/1.75/2 seconds
  • ForcePulse.jpg E - Force Pulse
    • DAMAGE: 80/130/180/230/280 ⇒ 80/120/160/200/240

Summary: Null Sphere has had its mana cost and damage reduced at later levels. The silence duration of Null Sphere has been increased at lower levels but very slightly lowered at max level. Riftwalk’s base damage and bonus damage per stack has been increased in addition to having a small AP ratio added per stack. Additionally, Riftwalk now refunds 50% of the total mana cost when it damages an enemy champion. Finally, Kassadin no longer gains magic resistance per level.

Context: Currently we feel like Kassadin’s play beyond the laning phase is too safe, especially when he gets ahead. He can deal consistently high damage at range with Null Sphere and Force Pulse while holding on to Riftwalk for a safe escape. These changes are focused on forcing Kassadin to use Riftwalk as a significant part of his damage output, which also gives opponents opportunities to capitalize on his mistakes.

  • General
    • Magic Resist per level reduced to 0 (from 1.25)
  • Null Sphere
    • Base damage reduced to 80/115/150/185/220 (from 80/130/180/230/280)
    • Silence duration changed to 1.5/1.75/2.0/2.25/2.5 seconds (from 1/1.4/1.8/2.2/2.6)
    • Mana Cost reduced to 70/75/80/85/90 (from 70/80/90/100/110)
  • Rift Walk
    • Base damage increased to 80/100/120 (from 60/70/80)
    • Base damage per Riftwalk stack reduced to 50/55/60 (from 60/70/80)
    • Added 0.1 Ability Power ratio per stack
    • Now refunds 50% of the total mana cost when Riftwalk damages an enemy champion

v3.03 We've made Nether Blade consistent against all structures. As an already effective mobile assassin,  Kassadin does not need unnecessary pushing power.

  • Nether Blade
    • Fixed a bug where  Kassadin's basic attacks with Nether Blade active triggered Muramana's active damage more than once
    • Nether Blade's active no longer deals damage to inhibitors or the nexus


  • Force Pulse
    • Fixed an issue where Force Pulse would sometimes fire backward after using Rift Walk.


  • Base Movement Speed increased by 25.


  • Nether Blade
    • Ability power ratio increased to 0.3 from 0.15
    • Bonus damage no longer hits inhibitors or the Nexus


  • Updated art assets


  • Riftwalk
    • Damage reduced to 60 / 70 / 80 from 60 / 90 / 120
    • Ability power ratio increased to 0.8 from 0.5


  • Riftwalk cooldown increased to 7 / 6 / 5 from 6 / 5 / 4


  • Fixed a bug which caused Force Pulse to cast backwards after performing Rift Walk


  • Null Sphere cast range reduced to 650 from 700
  • Force Pulse damage increased at earlier ranks to 80 / 130 / 180 / 230 / 280 from 60 / 115 / 170 / 225 / 280


  • Void Stone magic damage reduction increased to 15% from 10%
  • Null Sphere missile speed increased to 1,400 form 1,150
  • Nether Blade base damage increased to 30 / 45 / 60 / 75 / 90 from 20 / 30 / 40 / 50 / 60


  • Nether Blade
    • Passive mana restore increased at earlier ranks to 8 / 11 / 14 / 17 / 20 from 4 / 8 / 12 / 16 / 20
    • Active changed to 20 / 30 / 40 / 50 / 60 (+0.15 ability power) bonus magic damage dealt on hit instead of 7 / 15 / 25 / 38 / 50 armor penetration


  • Added a gray version of the charging/cooldown icon for Force Pulse


  • Fixed a bug where the visual for Force Pulse occasionally wouldn't align with the direction cast


  • Force Pulse
    • Damage reduced to 60 / 115 / 170 / 225 / 280 from 60 / 120 / 180 / 240 / 300
    • Cooldown increased to 6 seconds from 5
    • Ability power ratio reduced to 0.7 from 0.8
  • Riftwalk ability power ratio increased to 0.5 form 0.4
  • Void Stone damage reduction reduced to 10% from 15%


  • Nether Blade cooldown reduced to 12 seconds from 15


  • Netherblade mana cost reduced to 25 at all levels from 30 / 40 / 50 / 60 / 70
  • Riftwalk
    • No longer shows cast particles over fog of war
    • Now leaves a buff showing the duration of the increased cost and damage of subsequent casts


  • Nether Blade's level up tooltip now correctly states the increased mana cost
  • Riftwalk can no longer be cast while rooted


  • Attack range increased to 125 from 120
  • Magic resistance gained per level increased to 1.25 from 0


  • Netherblade has been redesigned
    • Passive - The mana drain component removed and replaced with a flat 4 / 8 / 12 / 16 / 20 mana restore on hit. This effect returns triple the mana against champions
    • Active - Kassadin gains 7 / 15 / 25 / 38 / 50 armor penetration for 5 seconds. 15 second cooldown. 30 / 40 / 50 / 60 / 70 mana cost. Activating this ability counts as a spell cast for the purposes of Force Pulse
  • Null Sphere projectile speed incresaed to 1,150 from 900
  • Void Stone (Passive)
    • The attack speed effect has been changed so that it stacks and renews instead of replaces on spell impact. This change will result in Kassadin gaining significantly more attack speed, and keeping it for a longer duration on average.
    • Duration lowered to 4 seconds from 5 seconds


  • Void Stone now applies an additive attack speed boost, rather than multiplicative


  • Force Pulse ability power ratio reduced to 0.8 from 1.0


  • Riftwalk mana cost reduced from 110 to 100
  • Force Pulse charge number requirement increased from 4 to 6


  • Null Sphere ability power ratio reduced from 0.8 to 0.7
  • Armor per level reduced from 3.5 to 3.2
  • Force Pulse now gains charges whenever any nearby champion casts a spell
  • Sounds
    • Reduced volume of Null Sphere and added volume/pitch randomization
    • Decreased the volume and radius of Force Pull Can Cast sound
    • Increased the volume and added volume/pitch randomization to Riftwalk


  • Riftwalk
    • Increased the mana cost form 75 to 110
    • Increased the cooldown from 6 / 4.5 / 3 to 6 / 5 / 4
    • Increased the doubling time from 7 to 8

 Kassadin released


  • 2014
  • 2013

Additional Content

Champion Information

Related Lore

Journal of Justice