Good patterns
- Uses spells to shape space, punish predictable movement or control an approach.
- Threatens reachable priority targets through burst, mobility or an unusual angle.
Game patch 26.20Data Dragon 16.20.1
Reference patch 16.20.1
Kassadin
the Void Walker
Kassadin is a burst-focused champion who looks for a reachable priority target and a route back out. This overview keeps the explanation practical and leaves patch-sensitive numbers to Riot's structured data and the current in-game tooltip.
Usual roleMid◆ClassAssassin · Mage
8DifficultyHigh · 8/10
◎Basic attacksMeleeMelee basic attacks · 150 range.
◈Damage profileMostly magic damageMost normal kit pressure is magic. Magic resistance may help, but control, penetration and true damage still matter.
#Reference patch16.20.1
Strengths and limits
What Kassadin does well, and what can go wrong
These are kit-level patterns, not a promise that every lane or matchup plays the same way.
Limits to respect
- Important pressure falls while key spells are unavailable or miss their intended area.
- A failed commitment can leave no clean exit and little value until cooldowns return.
- Basic attacks require close access, so enemy range, slows and displacement can deny a clean trade.
Riot ally tips
Use these while learning the championKassadin has multiple item paths; he can go caster via Mana and Ability Power or anti-caster with Cooldown Reduction and Magic Resist.
Kassadin's ultimate has many uses and is on a shorter cooldown than most, use it often.
Try to get the Ancient Golem buff to counteract Riftwalk's increasing Mana cost.
Riot opponent tips
What an opponent is told to watch forKassadin deals mostly magic damage. If he's doing well consider buying magic resist items like Mercury's Treads and Banshee's Veil.
Each time Kassadin consecutively uses Riftwalk, he pays more and more mana. Keep this in mind as you chase him.
It takes 6 spell casts for Kassadin's slow, Force Pulse, to become castable. If he levels up that ability, judiciously use your own skills while laning against him.
Practical champion reading
How to read Kassadin in a real fight
Use these patterns to ask better questions before choosing an item, target or commitment. They describe the kit, not a guaranteed result.
Primarily magic pressure
Magic resistance can reduce the broad spell profile, but positioning and cooldown tracking still decide whether the important abilities connect.
One short window carries much of the threat
Track the key setup and highest-impact cooldown. A missed or blocked opening can create a safer window before the full rotation returns.
Needs close access for basic attacks
Range, slows, displacement and terrain can deny the clean contact this champion wants. Plan the route in as carefully as the damage after arrival.
Threaten a reachable priority target
A clean angle matters more than attacking the nearest unit immediately. Keep an exit, reset or follow-up route in mind before committing.
Identify the exact movement restriction
Tenacity can shorten only eligible control. Displacements, airborne effects and repeated slows need their own positioning, blocking or movement answer.
Check whether recovery changes the fight
Anti-heal or anti-shielding is situational. Buy it only when the effect is materially protecting targets and your champion can apply the answer reliably.
Mana and cooldowns both matter
A spell being available does not mean the complete sequence is sustainable. Watch the resource bar as well as the setup and escape cooldowns.
Defensive item reference
What can help against Kassadin?
Start with the threat that is actually affecting the match. These are conditional comparisons, not an automatic counter build.
DEFENSIVE BOOTS
Mercury's Treads usually fit better
Magic resistance addresses the broad damage profile, while Tenacity can shorten reducible control.
Choose Plated Steelcaps instead only when physical basic attacks from this champion or the rest of the team are the larger repeated threat.Normal Draft and Ranked role map
Where Kassadin fits on Summoner's Rift
Each lane is assessed separately. Open a role to reach its queue-specific build and matchup preparation.
TopUnestablished route
Historical reference. Recommendation review pending. Kassadin is normally played Mid and does not currently have a reviewed Top route. Top usually needs independent laning, durable trading or reliable side-lane pressure. Treat this as a deliberate experiment, not a standard recommendation.
JungleUnestablished route
Historical reference. Recommendation review pending. Kassadin is normally played Mid and does not currently have a reviewed Jungle route. Jungle usually needs repeatable monster clear, safe pathing and objective control without lane income. Treat this as a deliberate experiment, not a standard recommendation.
MidPrimary role
Historical reference. Recommendation review pending. Kassadin has an established central-lane plan with access to waves, both sides of the river and meaningful pressure between objectives.
BotUnestablished route
Historical reference. Recommendation review pending. Kassadin is normally played Mid and does not currently have a reviewed Bot route. Bot usually needs dependable duo-lane scaling and sustained damage with shared early pressure. Treat this as a deliberate experiment, not a standard recommendation.
SupportUnestablished route
Historical reference. Recommendation review pending. Kassadin is normally played Mid and does not currently have a reviewed Support route. Support usually needs useful engage, peel or utility while operating on low gold income. Treat this as a deliberate experiment, not a standard recommendation.
Situational AP purchase
When should you buy anti-heal?
Buy healing reduction when enemy healing or regeneration is deciding fights and you can keep damaging the relevant target. Grievous Wounds reduces healing; it does not reduce shields, magic damage or crowd control.
Start with the component
Oblivion Orb can provide healing reduction without immediately paying for a completed Morellonomicon. Fit the component around your core damage, mana and survival needs; check the current queue's item tooltip.
Finish when it fits the fight
Complete Morellonomicon when its stats and slot efficiency suit your build. Do not treat it as a mandatory first item just because your champion deals magic damage.
Coordinate coverage
Multiple Grievous Wounds sources do not add their percentages together. Another reliable applier may cover the same target, but you may still need your own source for a separate fight or target.
Repeated spell damage and damage over time can maintain coverage more reliably than a single hit. Match the purchase to your actual spell access, enemy sustain and the teammates who can apply the debuff.
Will the fight last long enough?
If you die before dealing damage, you apply no healing reduction. If your target dies before healing, there is little healing to prevent. The debuff applies on qualifying damage immediately; it does not need to build up. It remains briefly after your last hit, so teammates can benefit even after you disengage.
Only healing during the active debuff counts. For example, 40% reduction prevents 80 of a 200-point heal, or 400 of a 1,000-point heal, before other modifiers. Compare that with the damage, penetration or survival you delayed; neither example guarantees a kill. Healing after the debuff expires is unaffected.
See the Oblivion Orb and Morellonomicon references for current effects and queue availability. These are situational decisions, not a measured best-build claim.
Kit reference
Kassadin abilities
Ability names, descriptions and numeric fields come from Riot Data Dragon. Practical reads are independently written; the current in-game tooltip remains authoritative.
Abilities Data Dragon 16.20.1Cooldown / Cost / Range Data Dragon 16.20.1
P
Passive
Void Stone
What it doesKassadin takes reduced magic damage and ignores unit collision.
Practical readVoid Stone is an automatic part of the kit involving damage. Track when its condition is active instead of treating every fight the same way.
Q
Q ability
Null Sphere
What it doesKassadin fires an orb of void energy at a target, dealing damage and interrupting channels. The excess energy forms around himself, granting a temporary shield that absorbs magic damage.
Practical readNull Sphere is a ranged cast involving protection or sustain and damage. Respect its line or target area, and avoid spending it when the opponent can simply step away before the important exchange.
Cooldown9/8.5/8/7.5/7 secCost60/65/70/75/80Listed range650 units
Cast commitment
This cast has a wind-up, charge or channel. Movement, interruption or a changing target state can matter before the effect completes.
Protection
The protection or sustain is part of the cast's value. Compare its timing with incoming damage rather than reading only the offensive effect.
W
W ability
Nether Blade
What it doesPassive: Kassadin's basic attacks deal bonus magic damage. Active: Kassadin's next basic attack deals significant bonus magic damage and restores Mana.
Practical readNether Blade contributes basic-attack interaction and damage. Its value changes with cooldown, range and target access; recognise the setup before moving into its effective area.
Cooldown7 secCost1
E
E ability
Force Pulse
What it doesKassadin draws energy from spells cast in his vicinity. Upon charging up, Kassadin can use Force Pulse to damage and slow enemies in a cone in front of him.
Practical readForce Pulse contributes a slowing effect and damage. Its value changes with cooldown, range and target access; recognise the setup before moving into its effective area.
Cooldown21/20/19/18/17 secCost60/65/70/75/80Listed range400 units
R
Ultimate
Riftwalk
What it doesKassadin teleports to a nearby location dealing damage to nearby enemy units. Multiple Riftwalks in a short period of time cost additional Mana but also deal additional damage.
Practical readRiftwalk contributes damage. Its value changes with cooldown, range and target access; recognise the setup before moving into its effective area.
Cooldown5/3.5/2 secCost40Listed range500 units
Movement
The cast changes position or access. Account for where the champion finishes, not only where the ability begins.
Levels 1–18
Kassadin · Health / Mana · Abilities
Base values exclude items, runes, temporary buffs and mode-specific modifiers. Cooldowns are the listed base cooldown before ability haste.
Cooldown Data Dragon 16.20.1
Basic abilityNull Sphere
Can receive its first point from level 1. Later ranks normally become available at levels 3, 5, 7 and 9.
Rank 19 secRank 28.5 secRank 38 secRank 47.5 secRank 57 sec
Basic abilityNether Blade
Can receive its first point from level 1. Later ranks normally become available at levels 3, 5, 7 and 9.
All ranks7 sec
Basic abilityForce Pulse
Can receive its first point from level 1. Later ranks normally become available at levels 3, 5, 7 and 9.
Rank 121 secRank 220 secRank 319 secRank 418 secRank 517 sec
UltimateRiftwalk
First rank becomes available at level 6; later ranks normally become available at levels 11 and 16.
Rank 15 secRank 23.5 secRank 32 sec
Open every levelHealth and mana from level 1 to 18
| Level | Health | Mana | Ability milestone |
|---|---|---|---|
| 1 | 646 | 400 Mana | Choose the first basic ability |
| 2 | 727 | 463 Mana | Add another basic ability or rank |
| 3 | 813 | 528 Mana | Add another basic ability or rank |
| 4 | 902 | 597 Mana | Spend one ability point |
| 5 | 995 | 669 Mana | Spend one ability point |
| 6 | 1,092 | 744 Mana | First ultimate rank normally available |
| 7 | 1,193 | 822 Mana | Spend one ability point |
| 8 | 1,299 | 902 Mana | Spend one ability point |
| 9 | 1,408 | 986 Mana | Spend one ability point |
| 10 | 1,521 | 1,073 Mana | Spend one ability point |
| 11 | 1,638 | 1,163 Mana | Second ultimate rank normally available |
| 12 | 1,758 | 1,257 Mana | Spend one ability point |
| 13 | 1,883 | 1,353 Mana | Spend one ability point |
| 14 | 2,012 | 1,452 Mana | Spend one ability point |
| 15 | 2,145 | 1,554 Mana | Spend one ability point |
| 16 | 2,282 | 1,659 Mana | Final ultimate rank normally available |
| 17 | 2,422 | 1,768 Mana | Spend one ability point |
| 18 | 2,567 | 1,879 Mana | Spend one ability point |
Choose the next question
Turn the profile into a pre-game plan
Choose a queue-aware build, compare a lane opponent, or return to the full champion library.