Senna (League of Legends)

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Senna

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 Past versions

Senna
the Redeemer
Release date	2019-11-10
Last changed	V14.16
Class(es)	Marksman Enchanter
Legacy	Support Marksman
Position(s)	Bottom Support
Resource	Mana
Range type	Ranged
Adaptive type	Physical
Store price	3150 | 790
Crafting	+ 1890
Ratings
Damage 2 Toughness 1 Control 2 Mobility 1 Utility 3
Style
Difficulty
Champion Spotlight
Senna Champion Spotlight

Senna is a champion in League of Legends.

Base statisticsEdit
Health 530+89
Health 530+89
Mana 350+45
Mana 350+45
Health regen. (per 5s) 3.5+0.55
Health regen. (per 5s) 3.5+0.55
Mana regen. (per 5s) 11.5+0.7
Mana regen. (per 5s) 11.5+0.7
Armor 28+4.7
Armor 28+4.7
Attack damage 50+0
Attack damage 50+0
Magic resist. 30+1.3
Magic resist. 30+1.3
Crit. damage 175%
Crit. damage 175%
Move. speed 330
Move. speed 330
Attack range 600
Attack range 600
Attack speed
Base AS 0.625
Base AS 0.625
Attack windup 31.25% (mod. 0.6)
Attack windup 31.25% (mod. 0.6)
AS ratio 0.4
AS ratio 0.4
Bonus AS +2%
Bonus AS +2%
Missile speed Non-projectile
Missile speed Non-projectile
Unit radius
Gameplay radius 65
Gameplay radius 65
Selection radius 115
Selection radius 115
Pathing radius 35
Pathing radius 35
Acq. radius 800
Acq. radius 800
Special statistics
Damage Dealt -6%
Damage Dealt -6%
Damage Received +5%
Damage Received +5%
Damage Dealt +0%
Damage Dealt +0%
Damage Received +0%
Damage Received +0%
Damage Dealt +5%
Damage Dealt +5%
Damage Received -10%
Damage Received -10%
Damage Dealt +0%
Damage Dealt +0%
Damage Received +0%
Damage Received +0%
Damage Dealt +10%
Damage Dealt +10%
Damage Received +0%
Damage Received +0%
Healing +20%
Healing +20%
Damage Dealt +0%
Damage Dealt +0%
Damage Received +0%
Damage Received +0%

Abilities

Edit

Basic Attack

Basic Attack
ATTACK RANGE:	600
SPEED:	N/A

Basic Attack: Senna blasts the target with her relic cannon that uses a non-projectile beam, dealing 100% AD physical damage and applying on-hit and on-attack effects.

Senna has an attack ratio of 0.4, meaning she only gains「 + 0.4 attack speed per  100% bonus attack speed. 」「 64% of the attack speed she would gain if her attack speed ratio was the same as her base attack speed. 」

Additionally, Senna's base attack windup is reduced「 to 31.25% − 21.875% (based on level), 」「 by 0% − 30% (based on level), 」but is only reduced by 60% of the expected value given attack speed bonuses.

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Info

Targeting input	Unit
Target out-of-range override	Walk in range of the target
Damage type
Type	Basic damage
Type	Basic damage
Sub-type	Physical
Sub-type	Physical
Counters
Parries	Blocked
Parries	Blocked
Projectile	Not Blocked
Projectile	Not Blocked

• At level 18, only with the per level bonus attack speed, Senna will have 0.761 attack speed, and will take 0.33 seconds to perform an attack compared to 0.528 seconds at level 1.

Edit

Absolution

Absolution
TARGET IMMUNITY:	6 / 5 / 4 (based on level)
EFFECT RADIUS:	2000

Innate - Weakened Soul: Senna's basic attacks on-hit and ability hits against enemy champions apply a stack of Mist for 4 seconds, modified to 0.75 seconds if Senna starts winding up a basic attack on them, and limited to once per target per cast. Subsequent hits will collect Mist and deal bonus physical damage equal to 1% − 10% (based on level) of target's current health, rendering the target immune to further Mist infliction for a few seconds. This damage applies  life steal at 100% effectiveness.

Enemies that die near Senna may spawn a Mist Wraith from their corpse. A Mist Wraith lasts 8 seconds and Senna can basic attack or hit it with Piercing Darkness or Dawning Shadow to kill them instantly, granting her 8 and collecting their Mist.

• Enemy champions and large monsters will spawn a Mist Wraith.
• Epic monsters will spawn 2 Mist Wraiths.
• Minions and lesser monsters that Senna kills have a 8.4% chance to spawn a Mist Wraith.
• Large minions that Senna does not kill will spawn a Mist Wraith, while lesser minions and lesser monsters that Senna does not kill have a 28% chance to spawn.
  • Lesser minions executed by an allied champion's Quest item have a 8.4% chance to spawn a Mist Wraith.

Mist: For each stack of Mist, Senna gains  0.75 bonus attack damage. For every 20 stacks, she also gains  20 bonus attack range and  8% critical strike chance. Additionally, every 1% critical strike chance in excess of 100% is converted into 0.35%  life steal.

Innate - Relic Cannon: Senna's basic attacks on-hit deal 20% AD bonus physical damage and grant her 10 / 15 / 20% (based on level) of the target's movement speed as  bonus movement speed for 0.5 seconds. This damage applies  life steal at 100% effectiveness.

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Info

Targeting input	Passive
Counters
Spell shield	Not Blocked
Spell shield	Not Blocked
Parries	See Notes
Parries	See Notes

• Despite Senna dealing 1 damage to Mist Wraiths, attacking them will calculate the attack's damage (including critical strike modifiers) and any on-hit effects for the purposes of  life steal and drain effects.
• Relic Cannon is only applied if the attack deals more than 0 damage.
  • Hence, it is not applied if the target is invulnerable or Senna's basic attack's  attack damage is reduced to 0 or below.
• Dealing 0 damage is valid for marking and collecting Mist from champions, but dealing no damage at all is not.
  • Hence, Senna can mark and collect from invulnerable enemies.
  • Dodge prevents marking and collecting a Mist via Senna's basic attacks and Piercing Darkness.
  • PENDING FOR TEST:: Mist interaction with block and blind.
• Nunu & Willump spawn a wraith each.
• Enemies will not see newly spawned wraiths while Senna is not visible.
• A wraith can be hit by Cosmic Binding and it will interact with it the same way minions or monsters interact with Cosmic Binding but it will not take damage.
• Mist Wraith has a spawn animation, but is targetable immediately.
• Mist Wraith grants a small amount of sight around itself.
• Runaan's Hurricane secondary bolts will ignore Mist Wraiths.
• Attacking a Mist Wraith will not consume energized stacks, but you can benefit from the range increase of Rapid Firecannon when collecting wraiths.
• Critical strike chance in excess of 100% is converted into negative critical strike chance for the life steal scaling.
• Excluding the range increase and the bonus shielding on Dawning Shadow, one stack of Mist is worth approximately 44.55 ( +8 from Mist Wraith pickup), 32.8125 if the critical chance is converted to life steal. The bonuses have a gross value of 46.25 ( 32.8125 with life steal).
  •  0.75 AD is worth 26.25‬.
  •  0.5% critical strike chance is worth 20. Absolution reduces its efficiency by 8.5%, making the value 18.3.
    •  0.175% life steal is worth ≈ 6.5625.
• The bonus on-hit damage does not apply an additional stack of Black Cleaver's Carve to offset Senna's low attack speed.^(bug)

Map-Specific Differences

One for All differences ^edit

• Wraiths are not shared.
• Weakened Soul debuff application is individually tracked and does not interact among multiple users.

Arena differences ^edit

• New Effect: Gains 7.5 Mist stacks per round.

Video

Edit

Piercing Darkness

Piercing Darkness
COST:	70 / 80 / 90 / 100 / 110 Mana
COOLDOWN:	15
CAST TIME:	0.4-0.25
TARGET RANGE:	600 - 1100
RANGE:	1300
WIDTH:	100 / 280

Active: Senna fires a spectral laser in the direction of the target unit, healing herself and allied champions hit, and dealing physical damage to enemies hit in a thinner line. Enemies hit are slowed by 15% (+ 15% per 100 bonus AD) (+ 10% per 100 AP) for a duration. The damage against champions applies  life steal at 100% effectiveness.

Healing: 40 / 55 / 70 / 85 / 100 (+ 40% bonus AD) (+ 60% AP) Physical Damage: 30 / 60 / 90 / 120 / 150 (+ 40% bonus AD) Slow Duration: 1 / 1.25 / 1.5 / 1.75 / 2 seconds

Upon being hit, enemy turrets, wards, jungle plants, Mist Wraiths and any other attack-interactive units are considered basic attacked once, while champions and turrets* are applied on-hit effects at 100% effectiveness.

Piercing Darkness'  current cooldown is reduced by 1 second on-hit.

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Info

Targeting input	Unit
Target out-of-range override	Walk in range of the target
Damage type
Type	Area damage
Type	Area damage
Sub-type	Physical
Sub-type	Physical
Counters
Spell shield	See Notes
Spell shield	See Notes
Parries	Missing
Parries	Missing
Projectile	Not Blocked
Projectile	Not Blocked

• Piercing Darkness also applies most on-attack effects to one enemy champion struck, and ocassionally to two.^(note)
  • Hail of Blades will spend a stack on hitting a champion with Piercing Darkness but only if Hail of Blades was activated first by an auto-attack.
• Piercing Darkness' cast time is always 80% of the caster's attack windup time.
  • Because Senna's windup percent scales down with levels but her windup time also only scales with 60% attack speed, the precise numbers get complicated quickly.
  • At base attack speed and level 1, Senna's attack windup is 0.5 seconds.
  • Reducing Senna's attack speed via attack speed reductions also increases Piercing Darkness' cast time by 60% of the fraction.
  • Piercing Darkness' cast time reduction per level via her own windup-per-level-reduction mirrors Lucian's Piercing Light's cast time values.

• Senna can generally target anything that is not either explicitly untargetable or herself.
  • Valid targets include anything that can be targeted by a basic attack from someone.
• Piercing Darkness will attempt to lead the target if it is moving but does not adjust further during cast time (enemies can dodge the laser if they change their position by a sufficient amount during the cast time).
  • It leads by (up-to?) 80 units.
• On-hit effects are applied in order of struck units' spawn IDs. This matters for effects that are consumed on-hit (e.g. Spellblade), which are applied to the target with the lowest Spawn ID.
  • "Spawn ID" is an unofficial abbreviation to describe the spawn order for all units at the beginning of games, below are some examples.
  • If Senna targets an enemy champion but hits at least one more enemy champion simultaneously, Press the Attack's first stack will be applied to that target. If no champion was targeted, it will default to the champion with the lowest Spawn ID out of the ones struck by the ability. Whether the effect stacks up on a champion or not when multiple enemy champions are stuck also depends on Spawn ID.
  • If Piercing Darkness struck an enemy champion and turret simultaneously, with Rapid Firecannon fully charged, the passive effect will most likely proc on the turret since towers are often spawned before champions.
• For on-attack effects, they are also applied in order of struck units' spawn IDs. However, there are some specific on-attack effects that will apply to both the target of Piercing Darkness and the target with the lowest Spawn ID if the two unit is not identical. ^(note) Confirmed cases:
  • Energized effects are stacked 2 stacks
  • Spectral Waltz are granted 2 stacks
  • PENDING FOR TEST:
• Spell shield will not prevent on-hit effects from being applied.
• PENDING FOR TEST:: Piercing Darkness interaction with dodging, blocking, and blinding effects.

Video

Edit

Last Embrace

Last Embrace
COST:	50 / 55 / 60 / 65 / 70 Mana
COOLDOWN:	11
CAST TIME:	0.25
TARGET RANGE:	1300
EFFECT RADIUS:	280
WIDTH:	140
SPEED:	1200

Active: Senna throws a globule of Black Mist in the target direction that deals physical damage to the first enemy hit and attaches to them for 1 second.

Physical Damage: 70 / 115 / 160 / 205 / 250 (+ 70% bonus AD)

After the duration or when the target dies, the Black Mist spreads out of the target, rooting them and surrounding enemies for a few seconds.

Root Duration: 1.25 / 1.5 / 1.75 / 2 / 2.25 seconds

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Info

Targeting input	Direction
Damage type
Type	Spell damage
Type	Spell damage
Sub-type	Physical
Sub-type	Physical
Counters
Spell shield	Blocked
Spell shield	Blocked
Projectile	Blocked
Projectile	Blocked

• Last Embrace will not root the primary target if they are untargetable.
• This ability will cast from wherever the caster is at the end of the cast time.

Video

Edit

Curse of the Black Mist

Curse of the Black Mist
COST:	70 Mana
COOLDOWN:	26 / 24.5 / 23 / 21.5 / 20
CAST TIME:	1
EFFECT RADIUS:	400
Detection Radius:	400

Active: Senna surrounds herself with an aura of mist and gains camouflage for a duration. If Senna breaks the camouflage, she regains it after 1.75 seconds without performing actions that break stealth.

Effect Duration: 6 / 6.5 / 7 / 7.5 / 8 seconds

Allied champions who enter the mist gain Wraith Form for a duration equal to the aura's remaining duration.

Wraith Form: Gain camouflage. Enemies will have obscured vision of camouflaged Wraiths moving outside of the mist. Wraith Form can be regained if lost by breaking the camouflage after 1.75 seconds without performing actions that break stealth. Wraith Form ends immediately upon Senna's death.

Senna and allies camouflaged by Curse of the Black Mist also gain  20% (+ 5% per 100 AP) bonus movement speed.

▶️   "Shadows catch the fallen..."

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Info

Targeting input	Auto

• Senna can move while casting Curse of the Black Mist.
• Allies affected by the Curse of the Blast Mist aura receive a buff called Cloak of Mist.
• Obscured units appear as Wraiths, hence the name. The wraith model does not distinguish which champion is obscured.
  • On the mini-map, obscured champions will be displayed as wraith icons instead of champion icons to the enemy team.
• In-game, the 'Cloak of Mist' buff grants camouflage and the 'Wraith Form' buff obscures the unit and grants movement speed. However, 'Cloak of Mist' has the unspecified effect of negating the obscuring effects of 'Wraith Form' (i.e. the unit is not a wraith while inside the mist); the unit has the bonus movement speed even when they are not a wraith (e.g. inside the mist or an enemy is nearby); and 'Wraith Form' also grants the functionality of camouflage (i.e. the unit is treated as a camouflaged unit with regards to True Sight, Control Wards, and enemy champions).
  • Given this overly complex interaction between the two buffs granted as well as the overlapping effects, it is easier to describe the effects as a single buff that is modified in specific circumstances rather than trying to establish a new game mechanic.
  • Senna likewise has her aura buff and the 'Wraith Form' buff, but her 'Wraith Form' does not share gameplay functionality with other allies benefiting from Wraith Form. For Senna, the appearance of being a wraith is a form-swap while camouflaged (similar to Evelynn's Demon Shade). Senna will remain in her wraith form when she is detected so long as the camouflage effect isn't broken, and her wraith's appearance is very distinct from other wraiths.
• Allied champions who enter the mist and have stealth of their own will still gain the Wraith Form buff but they will not grant obscured vision of themselves to the enemy while out of the mist nor will they appear as a Wraith.
  • Allies who have their own camouflage and also have Wraith Form will be revealed to enemies from their stealth's detection range, not Wraith Form's.
• If Senna gains invisibility while camouflaged by Curse of the Black Mist, the visual effects of her aura will be hidden while she is invisible.
• Curse of the Black Mist will not activate if Senna enters resurrection during the cast time.
• Wraith Form will not be granted to allies that are in a zombie state or are channeling. It will be granted to allies even if they are untargetable.
• Using a basic attack breaks the stealth at the start of the attack windup.
  • The stealth regain timer is refreshed from basic attacks at the start of their attack windup.

Video

Edit

Dawning Shadow

Dawning Shadow
COST:	100 Mana
COOLDOWN:	140 / 120 / 100
CAST TIME:	1
TARGET RANGE:	Global
WIDTH:	320 / 2400
SPEED:	20000

Active: Senna fires two waves of spectral light in the target direction, granting sight of the area briefly along the path. The center wave deals physical damage to enemy champions hit and reveals them for 3 seconds, as well as hits all Mist Wraiths.

Physical Damage: 250 / 400 / 550 (+ 115% bonus AD) (+ 70% AP)

The broad wave grants a shield to Senna and allied champions hit for 3 seconds.

Shield Strength: 120 / 160 / 200 (+ 50% AP) (+ 1.5 per Mist collected)

▶️   "No shadow without light!"

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• Tips & Tricks
• Video

Info

Targeting input	Direction
Damage type
Type	Area damage
Type	Area damage
Sub-type	Physical
Sub-type	Physical
Counters
Spell shield	Blocked
Spell shield	Blocked
Projectile	Blocked
Projectile	Blocked

• This ability will cast from wherever the caster is at the start of the cast time.
• Senna reveals herself during the cast time.

Tips & Tricks

• The broad wave is a singular projectile that can be destroyed.

Video

Pets

Mist Wraith
Bounty
Gold	8
Exp	0
CS
Statistics
Health	1
Incoming damage modifier 1 from Senna's basic attacks, Piercing Darkness, and Dawning Shadow
Mov. speed	Static

Control type	Autonomous
Target type	Minion
Protection	Only Senna herself can target and interact with the Mist Wraith.
Abilities Wraith The Mist Wraith is considered an enemy unit, but targetable to Senna only with her basic attacks and abilities. Wandering The Mist Wraith, after being spawned, disappears after 8 seconds.

Champion skins

This article section only contains champion skins. For all associated collection items, see Senna (Collection).

Original

View in 3D

975

10.11.2019

Cursed from childhood to be haunted by the supernatural Black Mist, Senna joined a sacred order known as the Sentinels of Light, and fiercely fought back—only to be killed, her soul imprisoned in a lantern by the cruel wraith Thresh. But refusing to lose hope, within the lantern Senna learned to use the Mist, and reemerged to new life, forever changed. Now wielding darkness along with light, Senna seeks to end the Black Mist by turning it against itself—with every blast of her relic weapon, redeeming the souls lost within.

Cynthia Kaye McWilliams

Bo 'chenbowow' Chen

Loot eligible

True Damage

View in 3D

1350

10.11.2019

Senna rose to fame with her stunning vocal range and iconic sense of style, but when a shady adversary from her past imprisoned her in a restrictive record deal that took away her creative independence, she vanished from the spotlight. After years of living in the shadows, she now emerges as the lead singer of True Damage with her mind set on defining her legacy on her own terms.

Cynthia Kaye McWilliams

Jennifer Wuestling

True Damage

Loot eligible

Additional/unique quotes

New SFX/VFX

New Animations/Recall

Chromas

True Damage Senna Chromas

Amethyst

Catseye

Citrine

Freestyle

Pearl

Ruby

Sapphire

Prestige True Damage

View in 3D

Special

04.02.2020

Having topped the charts once more, Senna finds herself in the familiar space of fame and celebrity. Between cosmetics deals and fashion shows, she offers a clear message to fans and haters alike: Don't call it comeback. Senna's been here for years.

Cynthia Kaye McWilliams

Esben Lash Rasmussen

True Damage

Loot eligible

Additional/unique quotes

New SFX/VFX

New Animations/Recall

This skin is a variant of True Damage. Store variants are discounted for multiple purchases.

High Noon

View in 3D

1820

18.06.2020

Once the greatest gunslinger on the continent, Senna's life would have ended when her heart was torn out by the devil—save for the intervention of a higher authority. Mysteriously resurrected with the heart of an angel and a demonic steed, she has returned to the west to restore the balance of Heaven and Hell... however she sees fit.

Cynthia Kaye McWilliams

Kelly Aleshire

High Noon

Loot eligible

New voiceover

New SFX/VFX

New Animations/Recall

Chromas

High Noon Senna Chromas

Citrine

Emerald

Mythic

Rose Quartz

Ruby

Tanzanite

PROJECT

View in 3D

1350

27.05.2021

A PROJECT volunteer who supposedly died during the elevation of her consciousness, Senna's mind was decoupled from the physical world and escaped into cyberspace, becoming a digital ghost. Inhabiting a body of her own design as Mordekaiser assumed control of the City, she is one of the few who understands the true threat of his ever-expanding directives.

Cynthia Kaye McWilliams

West Studio

PROJECT

Loot eligible

Voice filter

New SFX/VFX

New Animations/Recall

Chromas

PROJECT: Senna Chromas

Amethyst

Catseye

Obsidian

Pearl

Peridot

Reckoning

Rose Quartz

Ruby

Sapphire

Lunar Eclipse

View in 3D

1350

28.04.2022

An ancient knight long thought dead, freed from the Eclipse Cathedral's catacombs as Kayle began to stir from her ancient slumber. Senna now aids her knighthood against the new threat of the Coven, saving whoever she can from the resurrected Old Gods… though she remains ever vigilant, as the sun-eater's return is now inevitable.

Cynthia Kaye McWilliams

Augusto Quirino, West Studio

Eclipse

Loot eligible

Voice filter

New SFX/VFX

New Animations/Recall

Chromas

Lunar Eclipse Senna Chromas

Citrine

Emerald

Pearl

Rose Quartz

Ruby

Sapphire

Tanzanite

Turquoise

Prestige Lunar Eclipse

View in 3D

Special

28.04.2022

Burning up the runway in a look inspired by an ancient order of magical knights, Senna brings a cold, but determined energy to the Gala proceedings. Evil beware — these looks can kill... and kill again.

Cynthia Kaye McWilliams

Julia Yurtsev

Eclipse

Loot eligible

Voice filter

New SFX/VFX

New Animations/Recall

This skin is a variant of Lunar Eclipse. Store variants are discounted for multiple purchases.

Bewitching

View in 3D

1350

20.10.2022

When she was just a young witch, a warlock bound Senna's soul to a tome of spells, hoping to rid himself of her rising power. But her time spent disembodied only made her stronger. While others party, the overly serious Senna searches for ghouls and ghosts, planning to send them to the grave... again.

Cynthia Kaye McWilliams

Huyy Nugyen, West Studio

Bewitching

Loot eligible

Legacy

New SFX/VFX

New Animations/Recall

Chromas

Bewitching Senna Chromas

Catseye

Emerald

Obsidian

Pearl

Rose Quartz

Ruby

Sapphire

Turquoise

Star Guardian

View in 3D

1350

20.07.2023

Years spent battling the darkness alone has strengthened Senna's resolve, but it also hardened her heart. After all, when you're a Star Guardian, you know losing loved ones is inevitable. Still, she'll keep fighting now, harder than ever. Reuniting her new friend Xayah with her evil ex-boyfriend is a powerful motivator.

Cynthia Kaye McWilliams

Mingchen Shen, West Studio

Star Guardian Season 4

Loot eligible

New SFX/VFX

New Animations/Recall

Chromas

Star Guardian Senna Chromas

Catseye

Emerald

Obsidian

Pearl

Rainbow

Ruby

Sapphire

Tanzanite

Winterblessed

View in 3D

1820

06.12.2023

Senna woke in the dreamlike embrace of the Aurora. Clad in regal dress she didn't recognize, she had no memory of how she got there, nor could she remember anything else, save for flashes of warmth: a love, lost in shadow. "Who am I?" she wondered.

Cynthia Kaye McWilliams

Pandart Studio

Winterblessed

Loot eligible

New voiceover

New SFX/VFX

New Animations/Recall

Chromas

Winterblessed Senna Chromas

Catseye

Rainbow

Rose Quartz

Ruby

Tanzanite

Wreathguard

Patch history

For the expanded patch notes, see here.

V14.17

• Piercing Darkness
  • Base heal reduced to 40 / 55 / 70 / 85 / 100 from 40 / 60 / 80 / 100 / 120.
  • Heal AP ratio reduced to 60% AP from 80% AP.
• Dawning Shadow
  • Shield AP ratio reduced to 50% AP from 70% AP.

V14.16

• Stats
  • Attack speed growth reduced to 2% from 4%.
• Absolution
  • Critical strike chance per 20 stacks reduced to 8% from 10%.
• Piercing Darkness
  • Base heal increased to 40 / 60 / 80 / 100 / 120 from 40 / 50 / 60 / 70 / 80.
  • Heal AP ratio increased to 80% AP from 40% AP.
  • Heal bonus AD ratio increased to 40% bonus AD from 30%.
  • Removed: Heal no longer scales with 1.6 per 1 lethality.
  • Slow AP ratio increased to 10% per 100 AP from 6%.
  • Slow bonus AD ratio increased to 15% per 100 bonus AD from 10%.
• Last Embrace
  • Root duration increased to 1.25 / 1.5 / 1.75 / 2 / 2.25 seconds from 1 / 1.25 / 1.5 / 1.75 / 2.
• Curse of the Black Mist
  • Bug Fix: VFX no longer repeatedly plays in spectator mode.
• Dawning Shadow
  • Base shield increased to 120 / 160 / 200 from 100 / 150 / 200.
  • Shield AP ratio increased to 70% AP from 40% AP.

V14.7

• Absolution
  • Mist Wrath spawn rate on minions she kills increased to 8.4% from 2.8%.
  • Bug Fix: Mist Wrath spawn rate on minions killed by an ally Support item user no longer uses the incorrect chance of 28%, and has now been corrected to have a chance of 8.4%.

V14.6

• Absolution
  • Mist Wrath spawn rate on minions she kills reduced to 2.7% from 8.3%.

V14.5

• Piercing Darkness
  • Damage bonus AD ratio reduced to 40% bonus AD from 50%.

V14.1

• Absolution
  • Undocumented: Mist Wrath spawn rate from minions killed by an ally Support item user increased to 28% from 4.166%.

V13.24

• High Noon Senna
  • Bug Fix: Now properly plays the transition animation for exiting her Homeguard run animation.
• PROJECT: Senna
  • Dawning Shadow
    • Bug Fix: VFX is no longer cut off from elevation change when cast from lower ground.

V13.22

• Piercing Darkness
  • Base damage reduced to 30 / 60 / 90 / 120 / 150 from 30 / 65 / 100 / 135 / 170.
  • Base heal reduced to 40 / 50 / 60 / 70 / 80 from 40 / 55 / 70 / 85 / 100.

V13.18

• Basic Attack
  • Critical strike damage increased to 100% from 91.5%.
• Last Embrace
  • New Effect: Area of effect spread now applies a stack of Mist to champions hit.

V13.4

• Stats
  • Attack speed ratio increased to 0.4 from 0.3.
• Dawning Shadow
  • Base damage increased to 250 / 400 / 550 from 250 / 375 / 500.
  • Bonus AD ratio increased to 115% bonus AD from 100%.
  • Cooldown reduced to 140 / 120 / 100 from 160 / 140 / 120.
• Dawning Shadow
  • Bug Fix: PROJECT Senna's gun no longer disappears while casting the ability.

V13.3

• Last Embrace
  • Bug Fix: Missile is now fired from Senna's location at the end of the cast time again as intended.

V13.1b

• Stats
  • Mana regeneration growth increased to 0.7 from 0.4.

V12.23

• Last Embrace
  • Undocumented: Missile is now fired at cast time start location rather than at the end location.

V12.12 - June 30th Hotfix

• Stats
  • Base health reduced to 530 from 560.
• Piercing Darkness
  • Base damage changed to 30 / 65 / 100 / 135 / 170 from 40 / 70 / 100 / 130 / 160.
• Last Embrace
  • Root duration reduced to 1 / 1.25 / 1.5 / 1.75 / 2 seconds from 1.25 / 1.5 / 1.75 / 2 / 2.25.

V12.11

• Absolution
  • Mist Wraith spawn rate on minions she kills increased to 8.3% from 2.7%.
• Piercing Darkness
  • Base slow reduced to 15% from 20%.
  • Slow duration reduced to 1 / 1.25 / 1.5 / 1.75 / 2 seconds from 2 at all ranks.

V12.10 - May 25th Hotfix

• Stats
  • Base health reduced to 560 from 590.
• Absolution
  • Damage health ratio reduced to 1% − 10% (based on level) of target's current health from 1% − 16% (based on level).

V12.10

• Stats
  • Base health increased to 590 from 520.
  • Health growth increased to 89 from 75.
  • Armor growth increased to 4.7 from 3.5.
  • Magic resistance growth increased to 1.3 from 0.5.
• Piercing Darkness
  • Base heal reduced to 40 / 55 / 70 / 85 / 100 from 40 / 60 / 80 / 100 / 120.
  • Heal bonus AD ratio reduced to 30% bonus AD from 40%.
• Dawning Shadow
  • Base shield reduced to 100 / 150 / 200 from 120 / 160 / 200.

V12.4

• Dawning Shadow
  • Bug Fix: No longer changes direction if the ability is cast while the cursor is hovering the champion's portrait in the HUD.

V12.3

• Absolution
  • Mist Wraith spawn rate on minions she kills reduced to 2.7% from 10%.

V12.2

• Piercing Darkness
  • New Effect: Now slows enemies hit by 20% (+ 10% per 100 bonus AD) (+ 6% per 100 AP) for 2 seconds.

V11.20

• Piercing Darkness
  • Bug Fix: Fixed a bug where it did not grant Press the Attack stacks.

V11.17

• Absolution
  • Critical strike damage reduction reduced to 8.5% from 14%.
    • Critical strike damage increased to 160.125% from 150.5%.
  • Mist Wraith spawn rate on minions she kills increased to 10% from 4.166%.

V11.15

• True Damage Senna
  • Bug Fix: Unique skin voice lines have been restored.

V13.7

• General
  • Adjusted splash artwork for PROJECT: Senna.

V11.11

• Absolution
  • Bonus attack range per 20 stacks reduced to 20 from 25.
• Piercing Darkness
  • New Effect: Heal now scales with 1.6 per 1 lethality.
• Curse of the Black Mist
  • New Effect: Bonus movement speed now scales with 5% per 100 AP.
• Dawning Shadow
  • Damage AP ratio increased to 70% AP from 50% AP.

V11.5

• Absolution
  • New Effect: Can now only grant a maximum of 100% critical strike chance.
    • Excess critical strike chance is still converted into life steal.

V11.2

• Stats
  • Attack speed ratio increased to 0.3 from 0.2.
• Absolution
  • Mist Wraith spawn rate on minions she doesn't kill increased to 28% from 22%.
  • Mist Wraith gold increased to 8 from 3.
• Piercing Darkness
  • Heal AP ratio increased to 40% AP from 25% AP.
  • Damage bonus AD ratio increased to 50% bonus AD from 40%.
  • Bug Fix: Now properly grants a stack of Kraken Slayer's Bring It Down when hitting enemy champions and turrets.

V10.23

• Absolution
  • Critical strike damage reduction reduced 14% from 35%.
    • Critical strike damage increased to 150.5% from 130%.
  • Critical strike chance per 20 stacks reduced to 10% from 15%.
• Dawning Shadow
  • New Effect: Can now collect Mist Wraiths.

V10.19

• Absolution
  • Mist Wraith spawn rate on minion and lesser monster kills reduced to 4.166% from 8.33%.

V10.12

• General
  • Bug Fix: Her critical strike attacks no longer have longer windup time than her standard attacks.
• Absolution
  • Mist Wraith spawn rate on minion kills increased to 8.33% from 1.67%.

V10.11

• Absolution
  • New Effect: Stats can now be pinged.

V10.8

• Absolution
  • Mist Wraith spawn rate on minions she doesn't kill reduced to 22% from 25%.

V10.6

• Absolution
  • Bonus attack damage per stack reduced to 0.75 from 1.
  • On target cooldown increased to 6 / 5 / 4 (based on level) seconds from 4 at all levels.

V10.3

• Absolution
  • Mist Wraith spawn rate on minions Senna doesn't kill increased to 25% from 20%.
  • Mist Wraith spawn rate on large minion kills reduced to 1.67% from 100%.
  • New Effect: Minions executed by allies with Spoils of War now only have a 1.67% chance to spawn Mist Wraiths.
• Curse of the Black Mist
  • Bug Fix: Allies no longer briefly become invisible if she dies while active.

V9.24

• General
  • Recommended items updated.
• Stats
  • Health growth reduced to 75 from 85.
• Absolution
  • Mist Wraith spawn rate on minion kills reduced to 1.67% from 5.55%.
  • Removed: Champion clones no longer spawn Mist Wraiths.
  • Bug Fix: Allied Bard's Cosmic Binding's can no longer damage Mist Wraiths.
• Piercing Darkness
  • Base damage reduced to 40 / 70 / 100 / 130 / 160 from 50 / 80 / 110 / 140 / 170.
  • Damage AD ratio reduced to 40% bonus AD from 50%.
• Last Embrace
  • Root duration reduced to 1.25 / 1.5 / 1.75 / 2 / 2.25 seconds from 1.45 / 1.65 / 1.85 / 2.05 / 2.25.
• Dawning Shadow
  • Damage AP ratio increased to 50% AP from 40% AP.

V9.23

• Absolution
  • Removed: No longer changes the Spellthief's Edge item-line to grant adaptive force instead of  ability power.
  • ARAM Only: Stacks per collection of Mist reduced to 1 from 2.
• True Damage Senna
  • Loading screen border is now uniquely colored per True Damage skin.

V9.22 - Added

• Absolution (Innate)
  • Innate - Weakened Soul: Senna's basic attacks and abilities on enemy champions apply Mist for 4 seconds. Senna's next attack collects the Mist and deals 1% − 16% (based on level) of target's current health bonus physical damage. The same target cannot be collected more than once every 4 seconds.
  • Enemy champions, large minions and large monsters that die near Senna spawn a Mist Wraith for 8 seconds. Epic monsters spawn 2 Mist Wraiths instead. Small minions and lesser monsters have a 20% chance to spawn Mist Wraiths, reduced to 5.5% chance on those that Senna kills. Senna can basic attack a Mist Wraith to destroy it, gaining 3 and collecting its Mist.
  • Absolution: Each stack of Mist grants Senna  1 bonus attack damage. For every 20 stacks, Senna also gains  25 bonus range and  15% critical strike chance. Upon exceeding 100% critical strike chance, Senna converts 35% of the excess into  life steal. Additionally, Spellthief's Edge item-line grants adaptive force instead of  ability power.
  • Relic Cannon: Senna does not gain  attack damage through growth, her basic attack wind-up is only reduced by 0.6% per  1% bonus attack speed, and her critical strikes deal only (30% + 16.25%) AD bonus physical damage, but her basic attacks deal 20% AD bonus physical damage and grant her 10 / 15 / 20% (based on level) of the target's movement speed as  bonus movement speed for 0.5 seconds.
  • ARAM-Specific Change: Gain 2 stacks per collection of Mist instead of 1.
• Piercing Darkness (Q)
  • Active: After a brief delay, Senna fires a spectral laser in the direction of the target unit, healing herself and allied champions in a line for 40 / 60 / 80 / 100 / 120 (+ 40% bonus AD) (+ 25% AP), and dealing 50 / 80 / 110 / 140 / 170 (+ 50% bonus AD) physical damage to non-ward enemies hit in a thinner line. Enemy champions take on-hit effects.
  • Mist Wraiths struck by the beam are collected for Senna.
  • Basic attacks reduce Piercing Darkness'  cooldown by 1 second.
  • Mana Cost: 70 / 80 / 90 / 100 / 110.
  • Cooldown: 15 seconds.
  • Target Range: Senna's attack range.
  • Effect Radius: 1300.
  • Width: 130 / 260.
• Last Embrace (W)
  • Active: Senna throws a globule of Black Mist in the target direction, dealing 70 / 115 / 160 / 205 / 250 (+ 70% bonus AD) physical damage and sticking onto the first enemy hit.
  • After a 1 second delay or when the target dies, the Black Mist spreads out of the target, rooting them and nearby enemies for 1.45 / 1.65 / 1.85 / 2.05 / 2.25 seconds.
  • Mana Cost: 50 / 55 / 60 / 65 / 70.
  • Cooldown: 11 seconds.
  • Target Range: 1175.
  • Detection Radius: 400.
  • Speed: 1200.
• Curse of the Black Mist (E)
  • Active: Senna surrounds herself with an aura of mist for 6 / 6.5 / 7 / 7.5 / 8 seconds. The mist grants camouflage to Senna and allied champions inside, as well as a Wraith Form that lasts for the remaining duration. Senna's basic attacks and abilities will briefly break her out of camouflage.
  • Wraith Form: Gain  20% bonus movement speed and appear as an obscured wraith to enemies beyond 150 units. Performing a basic attack or casting an ability removes Wraith Form, which cannot be regained for 2 seconds.
  • Mana Cost: 70.
  • Cooldown: 26 / 24.5 / 23 / 21.5 / 20 seconds.
  • Cast Time: 1 second.
  • Effect Radius: 400.
• Dawning Shadow (R)
  • Active: Senna fires two beams of spectral light in the target direction, one granting sight in a broad area, the other dealing 250 / 375 / 500 (+ 100% bonus AD) (+ 40% AP) physical damage to enemy champions hit and afflicting them with Mist.
  • Senna and allied champions caught in any part of the area are shielded for 120 / 160 / 200 (+ 40% AP) (+ 1.5 per Mist collected) for 3 seconds.
  • Mana Cost: 100.
  • Cooldown: 160 / 140 / 120 seconds.
  • Cast Time: 1.3 seconds.
  • Target Range: Global.
  • Width: 320 / 2400.
  • Speed: 20000.

Trivia

• Senna is one of 15 champions that have an ability that infinitely stacks an effect: Aurelion Sol,  Bard,  Bel'Veth,  Cho'Gath,  Draven,  Kindred,  Nasus,  Shyvana,  Sion,  Smolder,  Swain,  Sylas,  Thresh, and  Veigar.
  • In Senna's case, Absolution infinitely stacks her attack damage, range, lifesteal and the shield of Dawning Shadow.
• Senna is an example of a champion that was present in the lore before they were developed into a playable champion: appearing as a recurring character in Lucian's story since his release. Another example is Lissandra, who appeared in the Journal of Justice.
  • She is also part of the alternative universes of High Noon and PROJECT without having any belonging skins before her release.
• Senna is the second champion that cannot increase a stat through leveling up, after Thresh and his armor. In her case, it is attack damage because of her passive, Absolution.
• If Senna and Thresh are played on opposing teams, a quest will trigger. This in-game quest consists in one killing the other to earn the opposing champion's stack of souls.
• Senna has among one of the longest attack frames in game, at 0.5 seconds, while most champions are between 0.2 and 0.3 seconds.
• Her name comes from Arabic سناء Sanāʼ "brightness, sublimity", from root s-n-y (> Sin "moon" & seneh "burning bush").

See also

League of Legends Wiki | Champions