Cassiopeia - The Serpent's Embrace

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The Serpent's Embrace
Real Name: Cassiopeia du Couteau
Region: Noxus.png Noxus
Role: Mage.png Mage
Release: 12/14/2010
Cost: 4800IP 880RP
Resource: Mana
Health: 506 (+75)
HP Regen: 5.69 (+0.5)
Mana: 334 (+63)
Mana Regen: 8.36 (+0.75)
Move Speed: 328

Attack Damage: 52.376 (+3.2)
Attack Speed: 0.647 (+1.68%)
Range: 550
Armor: 22.2 (+4)
Magic Resist: 30 (+0.5)


Overview   Match History    

Cassiopeia, The Serpent's Embrace is a Ranged AP Carry who specializes in doing high sustain magic damage. Her Noxious Blast and Miasma abilities place a damage over time effect on the enemy. While the enemy is poisoned her third ability Twin Fang has close to no cool down allowing her to spam it. She has one of the highest sustain damage per second of any caster. Due to her nature of spamming spells she has a reliance on Ancient Golem buff which makes her found often in solo middle lane.

Champion Spotlight


Lore: Cassiopeia is a terrifying creature - half woman, half snake - whose slightest glance brings death. The youngest daughter of one of Noxus's most influential families, she was once a beautiful and cunning temptress capable of manipulating the hardest heart. Transformed by the venom of an ancient Shuriman tomb guardian, she continues to serve Noxian interests as she always has, just in a more... visceral way.

“There is no antidote for me.”

- Cassiopeia, the Serpent's Embrace


PassiveSerpentine Grace
INNATE : Cassiopeia gains 4 movement speed per level. Cassiopeia cannot purchase Boots items.

QNoxious Blast
ACTIVE : After a brief delay, Cassiopeia blasts a small target area with an explosion of poison. All targets hit are poisoned and dealt magic damage over 3 seconds. Cassiopeia is granted a movement speed boost for 3 seconds if she hits a champion with this spell.
TOTAL MAGIC DAMAGE : 75 / 120 / 165 / 210 / 255 (+70% ABILITY POWER)
MOVEMENT SPEED BONUS : 30 / 35 / 40 / 45 / 50% decaying over the duration
COST : 60 / 65 / 70 / 75 / 80 mana
COOLDOWN : 3.5 seconds
RANGE : 750

ACTIVE : Cassiopeia spews venom in an arc in front of her, leaving toxic clouds for a few seconds. Enemies in the cloud are continually poisoned, slowing and Grounding them, prohibiting the use of movement abilities.
MAGIC DAMAGE PER SECOND : 20 / 35 / 50 / 65 / 80 (+15% ABILITY POWER)
SLOW : 40 / 50 / 60 / 70 / 80% decaying over the duration
COST : 70 mana
COOLDOWN : 22 / 20 / 18 / 16 / 14 seconds
RADIUS OF AoE : 550-800

ETwin Fang
ACTIVE : Cassiopeia fires fangs at an enemy, dealing magic damage and applying a stacking debuff that amplifies further poison damage by 20%. Stacks twice for a maximum of 40% amplification. If her target is poisoned, Twin Fang's cooldown is reduced to 0.5 seconds. If the target is Poisoned, Twin Fang deals an additional 10/30/50/70/90 (+50% ABILITY POWER) damage and also heals Cassiopeia for 5/10/15/20/25.

If Twin Fang kills the target, refunds its mana cost plus 1.5% of her maximum mana.

MAGIC DAMAGE : 52-120 (at levels 1-18) (+10% ABILITY POWER)
COST : 60 / 65 / 70 / 75 / 80 mana
COOLDOWN : 0.9 seconds
RANGE : 700

RPetrifying Gaze
ACTIVE : Cassiopeia deals magic damage to all enemies in a cone in front of her. Enemies facing her when damaged are stunned for 2 seconds, while enemies facing away are slowed by 60% for the same duration.
MAGIC DAMAGE : 150 / 250 / 350 (+50% ABILITY POWER)
COST : 100 mana
COOLDOWN : 120 / 100 / 80 seconds
RANGE : 825

Competitive Usage

In Premier Tournaments
Event Bans Picks Wins Losses Win % Picked/Banned in % of Games
CS EU logo.png 2014 EU CS Summer Playoffs 0 1 0 1 0 5.3
LCSlogo small.png 2014 NA LCS Spring Round Robin 0 1 0 1 0 0.9
RpPoints.png Season 3 World Championship 0 1 1 0 100 1.5
LPL.png Tencent LPL 2013 Summer 0 1 0 1 0 1.2
LCSlogo small.png EU LCS - Spring Season 1 2 1 1 50 2.7

Patch History

Patch Notes 7.18

E bonus against poisoned targets shifted from base damage into ratio.
Quote.png Twin Fang’s high base damage is allowing Cassiopeia to dip into defensive itemization while still pumping out glass-cannon-level damage in the early-to-mid game. If Cass wants to melt face, she should have to (literally) pay for it. Unquote.png

TwinFang.jpg E - Twin Fang

  • BONUS DAMAGE VS POISONED TARGETS: 15/40/65/90/115 ⇒10/30/50/70/90
  • BONUS RATIO VS POISONED TARGETS: 0.4 ability power ⇒ 0.5 ability power

Patch Notes 7.17

    • Fixed a bug where—when playing with a skin—Cassiopeia’s portrait would revert to her base portrait while dead

Patch Notes 7.16

Mana per level increased. E base damage down, AP ratio increased.
Quote.png Cassiopeia is known and picked for her ability to control her lane very well during early levels. We’re okay with her having some early kill pressure, but opting into the level 1 non-empowered “E-spam” strategy shouldn’t automatically win the lane. Unquote.png

Base stats

  • BASE MANA: 375 ⇒ 334
  • MANA GROWTH STAT: 60 ⇒ 63

TwinFang.jpg E - Twin Fang

  • DAMAGE VS POISONED TARGETS: 10/40/70/100/130 (+0.35 ability power) ⇒ 15/40/65/90/115 (+0.4 ability power)

Patch Notes 7.15

    • Cassiopeia now correctly plays her spell effort voiceover

Patch Notes 7.10

For real thissssssssss time.


  • NO HOVER SNAKES: Cassiopeia’s tail now follows her realistically as she moves and turns

Patch Notes 7.9

Quote.png With Aegis of the Legion's old aura out of the game, squishy champions who were relying on it to give them enough magic resist find themselves a bit on the burstable side. Unquote.png
  • HOORAY: Champions who previously gained no magic resist per level now gain 0.5 per level
  • AFFECTED CHAMPIONS: Ahri, Anivia, Annie, Ashe, Aurelion Sol, Azir, Bard, Brand, Caitlyn, Cassiopeia, Corki, Draven, Elise, Ezreal, Fiddlesticks, Gnar, Graves, Heimerdinger, Janna, Jayce, Jhin, Jinx, Kalista, Karma, Karthus, Kassadin, Kayle, Kennen, Kindred, Kog’Maw, LeBlanc, Lissandra, Lucian, Lulu, Lux, Malzahar, Miss Fortune, Morgana, Nami, Nidalee, Orianna, Quinn, Rakan, Ryze, Sivir, Sona, Soraka, Swain, Syndra, Taliyah, Teemo, Thresh, Tristana, Twisted Fate, Twitch, Urgot, Varus, Vayne, Veigar, Vel’Koz, Viktor, Vladimir, Xayah, Xerath, Yasuo, Ziggs, Zilean, Zyra

Patch Notes 7.5

    • Casting Cassiopeia's E - Twin Fang now respects Stop and Hold commands for her movement queueing

Patch Notes 7.4

Cassiopeia is now slick. Fixed a Flash + Ult bug.
  • General
    • NO HOVER SNAKES: Cassiopeia’s tail now follows her realistically as she moves and turns
  • Bugfixes
    • DIZZY SNAKE: Flashing during R - Petrifying Gaze’s cast time no longer resets the direction the cone fires in. It now consistently fires in the direction Cassiopeia faced before Flashing. This addresses a bug that sometimes caused Petrifying Gaze’s visuals to not line up with the actual effect.

Patch Notes 6.22

  • Bugfix
    • Cassiopeia now properly plays VO lines when placing wards

Patch Notes 6.19

W cast range reduced. E healing down.
Quote.png We’ve had this conversation a few times since mid-season, but to restate one of our beliefs: late-game characters like Cassiopeia need to have windows of interaction in the early game so opponents have a fair chance of winning. As Cass players learned to play around their bootless immobility, those windows have gradually closed. With finer mastery over their combat ranges, Cassiopeia players are now controlling too much of the battlefield from too far a distance, all the while sustaining through the damage opponents do manage to land. We’re heightening the risks Cassiopeia needs to take in lane to re-open those windows of interaction necessary to justify her late-game hyperscaling. Unquote.png

DeadlyCadence.jpg Passive - Serpentine Grace

  • AN UNNECESSARY PATCH NOTE: Cassiopeia still can’t wear boots. We thought you’d like to know.

Miasma.jpg W - Miasma

  • CAST RANGE: 900 ⇒ 800

TwinFang.jpg E - Twin Fang

  • HEALING ON POISONED TARGETS: 5/10/15/20/25 ⇒ 5-22 (at levels 1-18)

Patch Notes 6.11

  • Cassiopeia’s Q - Noxious Blast range indicator has been extended to match its cast range
  • Champions standing in Cassiopeia’s W - Miasma can no longer dash using the second cast of ARAM’s Mark / Dash
  • POISONOUS CLARITY: “Poisoned” particle’s size has been increased
Miasma.jpg W - Miasma
  • COOLDOWN: 22/20/18/16/14 seconds ⇒ 18/17/16/15/14 seconds
  • MINIMUM RANGE: 550 ⇒ 500
  • MAXIMUM RANGE: 800 ⇒ 900
  • BRINGING IT BACK: No longer stops upon hitting terrain

Patch Notes 6.10

Q and W ranges up. W cooldown decreased.
Quote.png One of the larger Midseason mage updates, Cassiopeia’s strengths as an immobilizing controller have been muted by a rather weak release state. Low ranges across her poisons appear to be the culprit, as Cassi quite literally lives or dies on her ability to access Noxious Blast’s burst of speed (or Miasma’s grounding). Add in some bonus usability to her poisons and Cassiopeia will see herself actually able to play her keep-away kite game without being overrun. Unquote.png

NoxiousBlast.jpg Q - Noxious Blast

  • RANGE: 750 ⇒ 850
  • SAVOR THE MOMENT: Noxious Blast’s movement speed bonus takes longer to decay
  • POISONOUS CLARITY: “Poisoned” particle’s size has been increased

Miasma.jpg W - Miasma

  • COOLDOWN: 22/20/18/16/14 seconds ⇒ 18/17/16/15/14 seconds
  • MINIMUM RANGE: 550 ⇒ 500
  • MAXIMUM RANGE: 800 ⇒ 900
  • BRINGING IT BACK: No longer stops upon hitting terrain

Patch Notes 6.9

True to her half-snake nature, Cassiopeia bears twin identities of “poison mage” and “lightning-fast viper strikes.” However, the high-input gameplay of Twin Fang has left Cassiopeia wanting for greater impact in her poisons, instead viewing them as a gating condition for her combo damage.
Rather than giving her more damaging poisons (Singed has that market cornered), we’ve sharpened Cassiopeia’s poison fantasy by linking Miasma to another snake fantasy: immobilization. The new Miasma lets Cassiopeia weaponize her own immobility by bringing opponents to her level. By limiting the ability of champions to leave her kill zone, Cassiopeia dictates the ranges of an engagement, keeping foes at a distance where she can wail on them safely. Should her opponents play around Miasma, however, Cassiopeia loses that control and faces swift punishment from the champions she sought to keep at bay.
  • General
    • BASE MOVEMENT SPEED: 335 ⇒ 328
    • SMALL SCALE ADJUSTMENTS: Several of Cassiopeia’s other base stats have been slightly adjusted
    • ICONS: Cassiopeia has all-new ability icons
  • UPDATED DeadlyCadence.jpg Passive - Serpentine Grace
    • SNAKES DON’T NEED BOOTS: Cassiopeia gains 4 movement speed per level. Cassiopeia cannot purchase Boots items.
  • NoxiousBlast.jpg Q - Noxious Blast
    • COST: 40/50/60/70/80 mana ⇒ 60/65/70/75/80 mana
    • COOLDOWN: 4 seconds ⇒ 3.5 seconds
    • DAMAGE: 75/115/155/195/235 ⇒ 75/120/165/210/255
    • RATIO: 0.45 ability power ⇒ 0.7 ability power
    • CAST RANGE: 850 ⇒ 750
    • BONUS MOVEMENT SPEED ON HIT: 20% ⇒ 30/35/40/45/50%, decaying over the duration
  • UPDATED Miasma.jpg W - Miasma
    Cassiopeia spews venom in an arc in front of her, leaving toxic clouds for a few seconds. Enemies in the cloud are continually poisoned, slowing and Grounding them, prohibiting the use of movement abilities.
    • COST: 70 mana
    • COOLDOWN: 22/20/18/16/14 seconds
    • DURATION: 5 seconds
    • DAMAGE: 20/35/50/65/80 per second
    • RATIO: 0.15 ability power per second
    • SLOW: 40/50/60/70/80%, decaying over the duration
    • RANGE: 550-800
    • CLOUD RADIUS: 160
  • TwinFang.jpg E - Twin Fang
    • COST: 50/60/70/80/90 mana ⇒ 60/65/70/75/80 mana
    • COOLDOWN: 5 seconds ⇒ 0.9 seconds
    • DAMAGE: 55/80/105/130/155 ⇒ 52-120 (at levels 1-18)
    • RATIO: 0.55 ability power ⇒ 0.1 ability power
    • REMOVED COOLDOWN RESET: No longer reduces the cooldown to 0.5 seconds upon hitting a poisoned target
    • REMOVED MANA POSITIVE: No longer refunds an additional 1.5% of Cassiopeia’s maximum mana on kill (still refunds 100% of the cost)
    • NEW SNAKE BITE: If the target is Poisoned, Twin Fang deals an additional 10/40/70/100/130 (+0.35 ability power) damage
    • NEW HEAL: If the target is Poisoned, Twin Fang also heals Cassiopeia for 5/10/15/20/25
    • HEAL RATIO: 0.1 ability power
  • PetrifyingGaze.jpg R - Petrifying Gaze
    • COOLDOWN: 120/110/100 seconds ⇒ 120/100/80 seconds
    • SLOW: 60% on targets facing away ⇒ 40% on targets facing away

Patch Notes 6.2

  • Similar to Ryze, Cassiopeia now retains her previous movement or attack command after E - Twin Fang's cast finishes

Patch Notes 5.18

  • Cassiopeia's W - Miasma is no longer sometimes invisible to the enemy team

Patch Notes 5.10
"These are two changes aimed at two different things, so we'll explain. First, while we did intend for late-game Cass to be an unstoppable force of a half-snake, the scaling heal on Twin Fang makes her borderline unkillable for some team compositions (particularly given her zone control). Second, when we were looking for ways to trim power on Cass, we saw that her champion update came right before our big refactor of the mana regeneration stat of the 2015 season (with most champions ending up with less mana regen in general). Given that these original numbers were tuned around competing mid-laners of the time (and higher baseline mana regeneration expectations like Athene's Unholy Grail), we decided to modernize accordingly. Cassi's still going to hit like a truck in the lategame - we just wanted to give more windows of opportunity for opponents to take advantage."

  • DeadlyCadence.jpg Passive - Aspect of the Serpent
    • PASSIVE BONUS At 100 stacks, Twin Fang heals for 6/8/10/12/14/16+0.1 ability power ⇒ +0.06 ability power
  • TwinFang.jpg E - Twin Fang
    • MANA REFUND If Twin Fang kills the target, it refunds its mana cost plus 3% of Cassiopeia's maximum mana ⇒ 1.5% of Cassiopeia's maximum mana

Patch Notes 5.9

  • VFX for Cassiopeia's R - Petrifying Gaze have been adjusted to match the area of effect

Patch Notes 5.6
Cassiopeia gets less AP when combined with %AP amplifying effects
"Last patch we modified how the first Dragon buff interacts with Rabadon's Deathcap (from multiplicative to additive, with an expected ~1-2% ability power change), but failed to document the larger hit to Cassiopeia, who was tripling (quadrupling?) down on it with her passive, Dragon buff, masteries, and Rabadon's Deathcap. We're documenting it now and realize this is late game Cassi nerf, but we're watching how this shakes out first."

  • LATE GAME CASSI NERF: Dragon buff and Rabadon's Deathcap now interact additively rather than multiplicatively. When these two ability power % modifications (and masteries) interact with Cassiopeia passive, they now give roughly ~12% less bonus ability power at late, late game.

Patch Notes 5.2

'Q and E have higher mana costs.'
Quote.png "As a lane bully, one wrong move against Cassiopeia can lose you a ton of HP and send you ducking for cover beneath your tower (or just packing your bags and going home). While it's not impossible to fight back, Aspect of the Serpent's healing just reinforces this non-stop lane bully tactic without much in terms of tradeoffs (thanks to Twin Fang's mana recovery). Increasing Cass's mana costs on Q and E should make it more of a calculated decision to harass or sustain, giving savvy opponents more time to formulate a counter-attack (or at least walk back to lane)." Unquote.png
  • NoxiousBlast.jpg Q - Noxious Blast
    • COST: 40/45/50/55/60 mana ⇒ 40/50/60/70/80 mana
  • TwinFang.jpg E - Twin Fang
    • COST: 35/45/55/65/75 mana ⇒ 50/60/70/80/90 mana
    • CLARITY!: Twin Fang's tooltip now always displays the amount of mana it will restore

Patch Notes 4.21
Aspect of the Serpent now gains stacks over time and every second an enemy champion is poisoned (rather than on poisoned unit kill or when using Twin Fangs on an enemy champ). Twin Fang now adds a debuff that amplifies poison damage on the target.
"Cassi's recent update definitely gave her the late-game we intended, but at two great costs: her early-game strength, and her identity as a 'Poison Mage.' We're trying to smooth out a bit of Cassiopeia's power here with some early buffs alongside some guaranteed scaling on her passive so that she can hit her early-mid-lategame fantasy (that is now a word) at the appropriate times. In short, we're looking to reach a middle ground between the update and her original feel of killing you slowly with venoms. Just quicker. (And with more venoms)."

  • DeadlyCadence.jpg Passive - Aspect of the Serpent
    • STACK CITY: Cassiopeia builds a stack of Aspect of the Serpent on every poisoned unit kill or on Twin Fang cast on enemy champion ⇒ once every 6 seconds (10 times per minute) and for every second that an enemy champion is poisoned.
    • IT'S A BUFF WE PROMISE: Cassiopeia gains special bonuses at 75/200/400 stacks ⇒ 100/250/500 stacks. The new breakpoints will be hit sooner than the old ones based on the new stacking mechanics (above).
  • NoxiousBlast.jpg Q - Noxious Blast
    • EVERYTHING IS NORMAL: Fixed a bug where Noxious Blast's delay wasn't actually normalized (it was hitting anywhere between 0.25 seconds and 0.5 seconds). Now has a flat 0.4 second delay.
    • MOVEMENT SPEED BONUS: 10/15/20/25/30% bonus movement speed ⇒ 20% bonus movement speed at all ranks
  • TwinFang.jpg E - Twin Fang
    • NEW LOOK AT THIS SYNERGY: Twin Fang now adds a debuff on the target that amplifies further poison damage by +20% for 5 seconds. This debuff stacks up to 2 times (capping at +40% poison damage).
    • COST: 30/45/60/75/90 mana ⇒ 35/45/55/65/75 mana
    • RATIO: 0.4/0.45/0.5/0.55/0.6 ability power ⇒ 0.55 ability power at all ranks

Patch Notes 4.17
Some small buffs to Cass's mana, Q's damage scales better with AP, and E's resetting its cooldowns correctly.
"We know Cass isn't doing great on the live environment, but we also want to make sure we don't react too quickly as players are learning a champion and then that champion goes on to demolish everyone (*cough* Kassadin *cough*). Still, we can give Cass a little bump as we watch her being picked up. This might be a conversation we'll revisit next patch!"

  • General
    • BASE MANA: 300 ⇒ 330
    • MANA PER LEVEL: +50 ⇒ +60
  • NoxiousBlast.jpg Q - Noxious Blast
    • ABILITY POWER RATIO: 0.35 ⇒ 0.45
  • TwinFang.jpg E - Twin Fang
    • 28.6% MORE FIXED Twin Fang now correctly resets its cooldown to 0.7 seconds ⇒ 0.5 seconds, as indicated by the tooltip

Patch Notes 3.12
Context: The cost of Cassiopeia's Petrifying Gaze is too damn high. To remedy this, we've reduced its mana cost at all levels to bring it more in line with other ultimate abilities.

  • Petrifying Gaze
    • Mana cost reduced to 100 (from 120/160/200)

Patch Notes 3.07

  • Twin Fang
    • Now counts as a single target spell for the sake of items like Rylai's Crystal Scepter.

Patch Notes

  • Base Movement Speed increased by 25.

Patch Notes

  • Updated art assets

Patch Notes

  • Fixed a bug where Miasma's slow was not stacking with many other slows in the game
  • Noxious Blast ability power ratio reduced to 0.8 from 0.9
  • Twin Fang damage reduced to 50 / 85 / 120 / 155 / 190 from 60 / 95 / 130 / 165 / 200

Patch Notes

  • Miasma now gives persistent vision in the area where cast

Patch Notes

  • Twin Fang cast animation sped up
  • Petrifying Gaze
    • Cast animation sped up
    • Cast range increased to 850 from 700 (effect now roughly matches the particle)
    • Damage increased to 200 / 325 / 450 from 150 / 275 / 400
    • Cooldown reduction with rank is now reflected in the levelup tooltip
    • More accurately targets enemies that move in/out of the area during the cast time

Patch Notes

  • Updated tooltips

Patch Notes

  • Twin Fang range increased to 700 form 675

Patch Notes

  • Base movement speed increased to 310 from 305
  • Noxious Blast movement speed buff increased to 3 seconds from 2
  • Twin Fang ability power ratio increased to 0.55 from 0.45
  • Petrifying Gaze
    • Slow increased to 60% at all levels from 40 / 50 / 60%
    • Cooldown changed to 130 / 120 / 110 seconds from 120 at all levels

Other Contents


  • Classic Cassiopeia
  • Desperada Cassiopeia
  • Siren Cassiopeia
  • Mythic Cassiopeia
  • Jade Fang Cassiopeia
  • Eternum Cassiopeia

  • Classic Cassiopeia
  • Classic Cassiopeia
  • Desperada Cassiopeia
  • Siren Cassiopeia

  • Desperada Cassiopeia

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