Cassiopeia

the Serpent's Embrace

Abilities

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

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.

Ability power

PSerpentine Grace

Cassiopeia increases the effectiveness of all Move Speed bonuses by 5%（(Lv1–20: 5–39.2)%）.

QNoxious Blast

Cassiopeia blasts noxious gas, Poisoning enemies and dealing (65 + 75% Ability power) magic damage over 3 seconds. Hitting a champion grants Cassiopeia 30% Move Speed decaying over 3 seconds.

Cooldown3.5 sCost50Range850

View source description

Cassiopeia blasts noxious gas, Poisoning enemies and dealing {{ tooltiptotaldamage }} magic damage over {{ poisonduration }} seconds. Hitting a champion grants Cassiopeia {{ champhitmsbonus }}% Move Speed decaying over {{ champhitmsduration }} seconds.{{ spellmodifierdescriptionappend }}

WMiasma

Cassiopeia spews venom, leaving toxic clouds for 5 seconds. Enemies in the clouds take (20 + 10% Ability power) magic damage per second, are Poisoned, Grounded, and Slowed by 40%.

Cooldown24 sCost70Range700

View source description

Cassiopeia spews venom, leaving toxic clouds for {{ cloudduration }} seconds. Enemies in the clouds take {{ damagepersecond }} magic damage per second, are Poisoned, Grounded, and Slowed by {{ slowpercent }}%.{{ spellmodifierdescriptionappend }}

ETwin Fang

Cassiopeia launches deadly fangs, dealing (Lv1–20: 50–128.2344 + 20% Ability power) magic damage. If the enemy is Poisoned, they take an additional (20 + 45% Ability power) magic damage and Cassiopeia restores 10% Ability power Health, reduced to 2.5% Ability power Health against lane minions and small monsters.

If this kills the target, Cassiopeia restores 45 Mana.

Cooldown0.75 sCost45Range700

View source description

Cassiopeia launches deadly fangs, dealing {{ basicdamage }} magic damage. If the enemy is Poisoned, they take an additional {{ bonuspoisoneddamage }} magic damage and Cassiopeia restores {{ healcalc }} Health, reduced to {{ healcalcminion }} Health against lane minions and small monsters. If this kills the target, Cassiopeia restores {{ cost }} Mana. {{ spellmodifierdescriptionappend }}

RPetrifying Gaze

Cassiopeia unleashes a petrifying gaze, dealing (125 + 75% Ability power) magic damage and Stunning enemies facing her for 2 seconds. Enemies facing away are Slowed by 40% decaying over the same duration instead.

Cooldown120 sCost100Range825

View source description

Cassiopeia unleashes a petrifying gaze, dealing {{ rdamage }} magic damage and Stunning enemies facing her for {{ rccduration }} seconds. Enemies facing away are Slowed by {{ rslowpercent }}% decaying over the same duration instead.{{ 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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