Champions

LIVEPatch 26.19Summoner’s Rift

Champions · ID 141

Kayn

the Shadow Reaper

Abilities

Select forms, weapons or follow-up abilities. Empowered and evolved effects also appear in the ability descriptions.

Form / weapon

Stats for ability calculations

Enter your current stats. Verified formulas show both the result and scaling; missing inputs leave the formula visible. Fields marked "in-game value" use a value supplied from the game, not a derived calculation. Damage is before mitigation.

Attack damageBonus attack damageBonus health

PThe Darkin Scythe

Kayn the Shadow Assassin fights Rhaast the Darkin Slayer for control. One will win, the other will die.

Damaging ranged champions charges the Shadow Assassin, and damaging melee champions charges the Darkin Slayer. At full charge, Kayn can permanently transform at his fountain.

Shadow Assassin: After entering combat Kayn's Attacks and Abilities deal an additional 20%（(20–40 (Lv1–18))%） damage dealt magic damage for 3 seconds. This only occurs if Kayn has been out of combat for 8 seconds or used Umbral Trespass.

Darkin Slayer: Kayn heals for (25 + 0.005 × Bonus health)% of physical damage dealt to champions.

4 minutes after reaching full charge on either form, Kayn can transform into either, even if it is not at full charge. The timer is reduced by 5 seconds when gaining charge in the non-full form. Kayn gains Homeguard after transforming.

QReaping Slash

Kayn dashes then spins his scythe, dealing (75 + 85% Bonus attack damage) physical damage to enemies he passes through, then deals the damage again to nearby enemies.

Darkin Slayer: Instead deal 65% Attack damage plus (6 + 0.035 × Bonus attack damage)% max Health physical damage.

Cooldown7 sCost40Range350

View source description

Kayn dashes then spins his scythe, dealing {{ totaldamage }} physical damage to enemies he passes through, then deals the damage again to nearby enemies. Darkin Slayer: Instead deal {{ darkinflatdamage }} plus {{ darkinpercentdamage }} max Health physical damage.{{ spellmodifierdescriptionappend }}

WBlade's Reach

Kayn swipes his scythe upward, dealing (85 + 110% Bonus attack damage) physical damage and Slowing enemies hit by -0.9%, decaying over 1.5 seconds.

Shadow Assassin: Kayn can move while using this Ability and increases its range.

Darkin Slayer: Additionally Knocks Up enemies hit for 1 second.

Cooldown13 sCost40Range700

View source description

Kayn swipes his scythe upward, dealing {{ totaldamage }} physical damage and Slowing enemies hit by {{ e3 }}%, decaying over {{ e5 }} seconds. Shadow Assassin: Kayn can move while using this Ability and increases its range. Darkin Slayer: Additionally Knocks Up enemies hit for {{ e2 }} second.{{ spellmodifierdescriptionappend }}

EShadow Step

Kayn gains 40% Move Speed, becomes Ghosted, and can move through Terrain for 7 seconds. When he first enters terrain, he restores (90 + 45% Bonus attack damage) Health.

Being Immobilized and spending more than 1.5 consecutive seconds outside of Terrain ends this Ability early.

Shadow Assassin: Gain 70% Move Speed, Slow immunity, and reduce the Cooldown to 10 seconds.

Cooldown21 sCost90Range400

View source description

Kayn gains {{ e1 }}% Move Speed, becomes Ghosted, and can move through Terrain for {{ e2 }} seconds. When he first enters terrain, he restores {{ totalhealing }} Health. Being Immobilized and spending more than {{ e3 }} consecutive seconds outside of Terrain ends this Ability early. Shadow Assassin: Gain {{ e5 }}% Move Speed, Slow immunity, and reduce the Cooldown to {{ assassincdreduction }} seconds.{{ spellmodifierdescriptionappend }}

RUmbral Trespass

Passive: Champions damaged by Kayn are marked for 3.15 seconds.

Kayn infests a marked enemy, becoming Untargetable. After 2.5 seconds or after Recasting, Kayn bursts out, dealing (150 + 150% Bonus attack damage) physical damage to the enemy.

Shadow Assassin: Increases this Ability's range, the distance Kayn exits, and refreshes The Darkin Scythe's Cooldown on exit.

Darkin Slayer: Instead deals (15 + 0.1 × Bonus attack damage)% max Health physical damage and restores (11.25 + 0.075 × Bonus attack damage)% Health (75% damage amount).

Cooldown120 sCost100Range550

View source description

Passive: Champions damaged by Kayn are marked for 3.15 seconds. Kayn infests a marked enemy, becoming Untargetable. After {{ infestduration }} seconds or after Recasting, Kayn bursts out, dealing {{ damage }} physical damage to the enemy. Shadow Assassin: Increases this Ability's range, the distance Kayn exits, and refreshes The Darkin Scythe's Cooldown on exit. Darkin Slayer: Instead deals {{ slayerdamage }} max Health physical damage and restores {{ healvalue }} Health ({{ slayerhealpercent*100 }}% damage amount).{{ spellmodifierdescriptionappend }}

Updates, sources & excluded items

Displayed data version: 16.19.1 · Patch 26.19

Last verified source check: Sep 28, 2026, 2:55 PM JST
Last successful scheduled run: No verified record
Displayed source capture: Sep 27, 2026, 3:12 PM JST

Latest attempt: No changes · Sep 28, 2026, 2:55 PM JST

Sources are checked every 6 hours, or every 3 hours on Wednesdays and Thursdays (JST). Changed sources or compiler code trigger regeneration and validation before applying. Start times may be delayed.

This page uses a pinned Data Dragon snapshot. It is not a verification of every in-game interaction or hotfix.

Stats and stacks calculate the state you enter. Nine outputs that cannot be derived from the source require in-game values. Special copied or possessed recasts and transfer restrictions are outside full simulation coverage.

Excluded from the catalog: 91

This catalog covers normal Summoner’s Rift. Excluded does not mean removed from the game. The classification and its source are listed below.

Mosstomper Seedling (1105) — Other game mode
Evidence 1
Gustwalker Hatchling (1106) — Other game mode
Evidence 1
Scorchclaw Pup (1107) — Other game mode
Evidence 1
Fortification (1501) — Internal record
Evidence 1
Reinforced Armor (1502) — Internal record
Evidence 1
Warden's Eye (1503) — Internal record
Evidence 1
Reinforced Armor (1505) — Internal record
Evidence 1
Reinforced Armor (1506) — Internal record
Evidence 1
Overcharged (1507) — Internal record
Evidence 1
Anti-tower Socks (1508) — Internal record
Evidence 1
Gusto (1509) — Internal record
Evidence 1
Phreakish Gusto (1510) — Internal record
Evidence 1
Super Mech Armor (1511) — Internal record
Evidence 1
Super Mech Power Field (1512) — Internal record
Evidence 1
Turret Plating (1515) — Internal record
Evidence 1
Structure Bounty (1516) — Internal record
Evidence 1
Structure Bounty (1517) — Internal record
Evidence 1
Structure Bounty (1518) — Internal record
Evidence 1
Structure Bounty (1519) — Internal record
Evidence 1
OvererchargedHA (1520) — Internal record
Evidence 1
Fortification (1521) — Internal record
Evidence 1
Tower Power-Up (1522) — Internal record
Evidence 1
Overcharged (1523) — Internal record
Evidence 1
Overgrowth (1524) — Internal record
Evidence 1
Recall (2001) — Internal record
Evidence 1
Disabled Recall (2007) — Internal record
Evidence 1
Corrupting Potion (2033) — Confirmed removed
Evidence 1 Evidence 2
Guardian's Horn (2051) — Other game mode
Evidence 1
Poro-Snax (2052) — Other game mode
Evidence 1
Cappa Juice (2141) — Other game mode
Evidence 1 Evidence 2
Minion Dematerializer (2403) — Confirmed removed
Evidence 1 Evidence 2
Trailblazer (3002) — Confirmed removed
Evidence 1 Evidence 2
Symbiotic Soles (3010) — Confirmed removed
Evidence 1 Evidence 2
Chemtech Putrifier (3011) — Confirmed removed
Evidence 1 Evidence 2
Synchronized Souls (3013) — Confirmed removed
Evidence 1 Evidence 2
Guardian's Orb (3112) — Other game mode
Evidence 1
Mobility Boots (3117) — Confirmed removed
Evidence 1 Evidence 2
Forever Forward (3176) — Confirmed removed
Evidence 1 Evidence 2
Guardian's Blade (3177) — Other game mode
Evidence 1
Guardian's Hammer (3184) — Other game mode
Evidence 1
Leeching Leer (4635) — Confirmed removed
Evidence 1 Evidence 2
Night Harvester (4636) — Confirmed removed
Evidence 1 Evidence 2
Demonic Embrace (4637) — Confirmed removed
Evidence 1 Evidence 2
Stirring Wardstone (4641) — Confirmed removed
Evidence 1 Evidence 2
Prowler's Claw (6693) — Confirmed removed
Evidence 1 Evidence 2
Opportunity (6701) — Confirmed removed
Evidence 1 Evidence 2
Gangplank Placeholder (7050) — Internal record
Evidence 1
Anathema's Chains (8001) — Confirmed removed
Evidence 1 Evidence 2
Shurelya's Battlesong (322065) — Other game mode · Swiftplay · Related ID: 2065
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Whispering Circlet (322526) — Other game mode · Swiftplay · Related ID: 2526
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Diadem of Songs (322530) — Other game mode · Swiftplay · Related ID: 2530
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Trailblazer (323002) — Other game mode · Swiftplay · Related ID: 3002
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Archangel's Staff (323003) — Other game mode · Swiftplay · Related ID: 3003
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Manamune (323004) — Other game mode · Swiftplay · Related ID: 3004
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Seraph's Embrace (323040) — Other game mode · Swiftplay · Related ID: 3040
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Muramana (323042) — Other game mode · Swiftplay · Related ID: 3042
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Zeke's Convergence (323050) — Other game mode · Swiftplay · Related ID: 3050
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Tear of the Goddess (323070) — Other game mode · Swiftplay · Related ID: 3070
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Thornmail (323075) — Other game mode · Swiftplay · Related ID: 3075
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Redemption (323107) — Other game mode · Swiftplay · Related ID: 3107
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Knight's Vow (323109) — Other game mode · Swiftplay · Related ID: 3109
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Frozen Heart (323110) — Other game mode · Swiftplay · Related ID: 3110
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Winter's Approach (323119) — Other game mode · Swiftplay · Related ID: 3119
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Fimbulwinter (323121) — Other game mode · Swiftplay · Related ID: 3121
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Locket of the Iron Solari (323190) — Other game mode · Swiftplay · Related ID: 3190
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Mikael's Blessing (323222) — Other game mode · Swiftplay · Related ID: 3222
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Ardent Censer (323504) — Other game mode · Swiftplay · Related ID: 3504
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Imperial Mandate (324005) — Other game mode · Swiftplay · Related ID: 4005
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Staff of Flowing Water (326616) — Other game mode · Swiftplay · Related ID: 6616
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Moonstone Renewer (326617) — Other game mode · Swiftplay · Related ID: 6617
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Echoes of Helia (326620) — Other game mode · Swiftplay · Related ID: 6620
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Dawncore (326621) — Other game mode · Swiftplay · Related ID: 6621
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Rod of Ages (326657) — Other game mode · Swiftplay · Related ID: 6657
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Abyssal Mask (328020) — Other game mode · Swiftplay · Related ID: 8020
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Atma's Reckoning (663039) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Demon King's Crown (663056) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Shield of Molten Stone (663058) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Cloak of Starry Night (663059) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Sword of the Divine (663060) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Veigar's Talisman of Ascension (663064) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Hextech Gunblade (663146) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Zephyr (663172) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Gargoyle Stoneplate (663193) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Sword of Blossoming Dawn (664011) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
The Golden Spatula (664403) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Crown of the Shattered Queen (664644) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Gambler's Blade (667101) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Cruelty (667109) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Flesheater (667112) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
The Collector (667666) — Other game mode · Doom Bots
Evidence 1 Evidence 2 Evidence 3 Evidence 4
Penetrating Bullets (771500) — Internal record
Evidence 1

Content language: English

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