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Prophet of an Elder God
STATIC COOLDOWN: 20 − 12 (based on level)
Prophet of an Elder God

Innate: Periodically, Illaoi spawns a Tentacle on a nearby impassable terrain if no other Tentacles are nearby. Tentacles fully spawn after a 2 second delay and are Playful untargetable in the meantime.

Tentacles deal 10 − 180 (based on level) (+ 120% AD) (+ 40% AP) Attack damage physical damage to all enemies struck when commanded to attack by her abilities. Each Tentacle also Heal power heals Illaoi for 5% missing health if it hits at least one enemy Champion icon champion. See Pet Details for more details.

  • Tentacles do not spawn in the Nexus Obelisk's attack range and on ally invulnerable Turret icon structures.
  • Impassable terrain also includes player-made terrain and terrain that is passable by a team but not by the other, for example base gates.
  • The Tentacle will continue its spawn animation and be able to start an attack, after the animation ends, even if Illaoi or a Vessel are not nearby.
  • If Illaoi uses Harsh Lesson Harsh Lesson during Tentacles' spawn animation, they won't attack but the SFX of the attack will still be heard.
    • If this happens, after the Tentacle finishes its spawn animation, it will be unable to start an attack for its remaining attack SFX.

Tentacle Smash
WIDTH: 210
COST: 40 / 45 / 50 / 55 / 60 Mana
COOLDOWN: 10 / 9 / 8 / 7 / 6

Passive: Tentacles deal increased damage.

Damage Increase:
10 / 15 / 20 / 25 / 30%
Tentacle Smash

Active: Illaoi slams her idol into the ground, summoning a Tentacle that slams down in the target direction, dealing physical damage before disappearing.

  • Getting Airborne icon displaced during the cast time will not change the indicator on the ground, but it will change the damaged area, while still being directed towards the previous pointed location.
  • If Illaoi is not Sight icon visible, the slam will be seen but it will not be heard.

Harsh Lesson
COST: 30 Mana
Harsh Lesson

Active: Illaoi's next basic attack within 6 seconds gains Range icon 225 bonus range and causes her to Dash leap to her target if they're beyond her normal basic attack range.

The attack deals bonus physical damage, with a minimum threshold, and capped at 300 against non-champions, and commands all Tentacles in range to attack her target. The minimum bonus damage can also be applied against Turret icon turrets.

Bonus Physical Damage:
3 / 3.5 / 4 / 4.5 / 5% (+ 2% per 100 AD) of target's maximum health

Minimum Physical Damage:
20 / 30 / 40 / 50 / 60

Harsh Lesson Bladework resets Illaoi's basic attack timer.

Harsh Lesson can be activated during Illaoi's other abilities, other than while Test of Spirit pulling a Spirit.

  • Since the attack applies both on-hit effects and spell effects it will trigger Muramana item Muramana twice.
  • The bonus damage doesn't apply  lifesteal Heal power healing but it does apply Spell vamp icon spell vamp.
  • Harsh Lesson is made of two different abilities which are decided by Illaoi's range to the target, being either Melee role melee or within Dash dash range.
  • The close range ability:
    • Is an Excessive Force 2 unstoppable basic attack.
    • Can be used while Grounded icon grounded or Root icon rooted. If Illaoi attack commands and then casts Harsh Lesson, she will use the close range Harsh Lesson even if the target is beyond her melee range.
    • Starting the attack before triggering Guardian Angel item Guardian Angel's passive and hitting while she's in it will not cause the Tentacles to slam.
    • Starting the attack before the target becomes Playful untargetable will still cause the Tentacles to slam the target.
    • Does trigger Hail of Blades rune Hail of Blades.
    • Triggers Kircheis Shard item Energized effects on-hit.
    • Using it at the same time with Ravenous Hydra item Ravenous Hydra will perform an unusual dunk.
    • If the empowered attack duration ends during the attack animation, the attack won't be empowered.
  • The dash range ability:
    • Is not unstoppable, meaning that effects can interrupt it during the dash and put it cooldown. Flash Flash and Zhonya's Hourglass item Zhonya's Hourglass cannot be used during the dash.
    • Cannot be used while Grounded icon grounded or Root icon rooted.
    • Starting the attack before the target becomes Playful untargetable will not make Tentacles slam.
    • Does not trigger Hail of Blades rune Hail of Blades.
    • Triggers Kircheis Shard item Energized effects during the jump.
    • Having enough attack speed will perform an unusual dunk.
    • Having increased size will increase the range of her Harsh Lesson but the indicator range will not change.
    • If the empowered attack duration ends during the dash, the buff will linger until the attack has finished.
  • Spell Shield Spell shields will block the bonus damage but will not prevent the Tentacle slam, unless a dash range Harsh Lesson has been used, in which case the bonus damage is not blocked but the spell shield is still consumed.
  • Parries (Counter Strike Counter Strike, Spirit's Refuge Spirit's Refuge, Blinding Dart Blinding Dart) will block the damage and will not trigger Prophet of an Elder God Tentacle slams, with the exception of:
    • Spirit's Refuge Spirit's Refuge when using a close range Harsh Lesson, which triggers Prophet of an Elder God Tentacle slams.
    • Blinding Dart Blinding Dart when using a dash range Harsh Lesson, which triggers Prophet of an Elder God Tentacle slams.
  • If the target dies at the moment Harsh Lesson hits the target, it will be consumed and put on cooldown, without making Tentacles slam.
  • The Tentacle attacking because of Harsh Lesson is considered to be part of it, and thus will not grant additional stacks of Conqueror rune Conqueror, Electrocute rune Electrocute, Phase Rush rune Phase Rush and Tribute.
  • Using it together with Dead Man's Plate item Dead Man's Plate will grant an additional stack of Conqueror rune Conqueror.
  • Harsh Lesson's bonus damage applies before Blade of the Ruined King item Blade of the Ruined King's damage.
  • Harsh Lesson triggers Bone Plating rune Bone Plating and one of its plates with the same attack.
  • Attack moving while charging Hexflash Hexflash will delay the attack.

Test of Spirit
WIDTH: 100
SPEED: 1900
COST: 35 / 40 / 45 / 50 / 55 Mana
COOLDOWN: 16 / 15 / 14 / 13 / 12
Test of Spirit

Active: Illaoi fires a projectile in the target direction, stopping at the first enemy hit. If the enemy is a Champion icon champion, their Spirit is pulled in front of Illaoi over 0.75 seconds. The target is Focused Resolve tethered to the Spirit for 7 seconds, and is True Sight icon revealed while the tether remains.

The Spirit has the target's Health icon current health, Armor icon armor and Magic resistance icon magic resist, and redirects a portion of the pre-mitigation damage received to the tethered champion.

Damage Transmission:
25 / 30 / 35 / 40 / 45% (+ 8% per 100 AD)

When the Spirit is killed or the target moves too far away, the tether is severed, marking the target as a Vessel for 10 seconds, Sight icon revealing the area around them for a few seconds, and Slow icon slowing them by 80% for 1.5 seconds once the tether returns back to them.
Each Tentacle autonomously attacks the closest Vessel or Spirit once every 5.5 / 4.5 / 3.5 (based on level) seconds.


Vessel: Enemies made a Vessel spawn a Tentacle near themselves every 5 / 4 / 3 (based on level) seconds. Tentacles can spawn exceptionally closer to each other than when spawned by Illaoi.

Vessels can dispel the Malefic Visions debuff by Damage rating taking down Illaoi.

  • Spirits are classified as Command Hallucinate clones:
    • Spirits can only be targeted by Illaoi's team and neutral monsters. The Spirit's allies cannot target it.
    • Spirits take 50% damage from turrets and do not cause turrets to Ohmwrecker item Warm Up their attacks.
    • Spirits cannot be Heal power healed or Hybrid resistances icon shielded (Summon Aery rune Summon Aery excluded).
    • The Spirit levels up when the Vessel does. Doing so will increase the Spirit's health, armor, and magic resist, and additionally extend its lifetime by 1 second.
    • Killing the Spirit awards Gold 25 and Experience icon 44.
  • Redirected damage is calculated by taking the pre-mitigation damage, applying Test of Spirit's damage modifier, and then capping it to the Spirit's current health. This damage will then be affected by damage modifiers (resistances and other effects) of the Vessel.
    • If the Spirit's damage modifier is lower than Test of Spirit's, it will cause a reduction in total redirected damage, else it will cause an increase.
    • If the Spirit's damage modifier is lower than the Vessel's, it will cause an increase in total redirected damage, else it will cause a decrease.
    • Illaoi needs 937.5 / 875 / 812.5 / 750 / 687.5 total AD to reach 100% redirected damage. As per above, the damage is still dependent on the Spirit's and Vessel's damage modifiers and may not always be able to deal 100% of the target's current health as total redirected damage.
    • The damage displayed as being received by the Spirit is not representative of the damage redirected to the Vessel, as the combat text shown adjacent to the Spirit uses the Spirit's resistances.
  • Spell Shield Spell shields may only prevent the initial spirit grab and the slow upon becoming a Vessel. Spell shields will not prevent becoming a Vessel or Tentacles from attacking.
  • The spirit pull is not considered a Stun icon crowd control effect and will not be blocked by Cc-immune icon crowd control immunity, with the exception of Morgana OriginalSquare Morgana's Black Shield Black Shield.
  • If the target becomes a Vessel within range of a dormant Tentacle, that Tentacle will skip its first attack.
  • The tentacle model of the first cast is connected to Illaoi's body and will stop moving when Illaoi does (e.g Stasis icon stasis, Sleep icon sleep, Airborne icon airborne). However, the projectile will not, and will be able to hit enemies away from its model position. It will also not be seen by enemies if Illaoi is not Sight icon visible, but it will be heard if the tentacle passes through their vision.
  • Using Flash Flash during the cast time will change Illaoi's position but the tentacle will still be directed towards the previous pointed location.
  • Grabbing the Spirit of a champion that has their resource bar white (i.e Flow resource Flow) will make the Spirit's lifetime (the white bar below the lifebar) disappear.
  • Grabbing the Spirit of a target that is Ambush 2 camouflaged while they are being revealed by a Control Ward item Control Ward will make the Spirit also invisible.
  • Only Illaoi can see who's been Vesseled, with their model covered in watery effects. The Vessel itself will instead have its screen covered in watery effects.
  • The Vessel status effect is a debuff that doesn't persist through death.
  • If the enemy champion is Revival icon resurrecting when the conditions for becoming a Vessel are met, then they will not revive as a Vessel.
  • Runes consider the Spirit as a champion for their effects and stat-tracking.
    • Predator rune Predator only reflects double bonus damage, not taking into account actual damage done to the Spirit (e.g if Predator rune Predator would deal 60 bonus damage, what would get reflected is 120 damage).
  • Transferred damage will apply on-damage effects, such as Black Cleaver item The Black Cleaver, Morellonomicon item Morellonomicon, Executioner's Calling item Executioner's Calling, Aspect of the Dragon buff Aspect of the Dragon burn damage and the healing from Death's Dance item Death's Dance or Hextech Gunblade item Hextech Gunblade.
    • Transferred damage will not doubly apply on-hit or on-spell effects versus the target (e.g. Liandry's Torment item Liandry's Torment, Phase Rush rune Phase Rush stacks). These effects are only applied versus the Spirit.
    • Attacking the Vessel and its Spirit simultaneously will only apply one Black Cleaver item The Black Cleaver to the Vessel.
  • Once the Spirit vanishes, whether defeated or not, Illaoi will get Phage item Rage's full movement speed bonus and 1 creep score in-game (not included in the post-game counter).
  • The Spirit is immune to Stasis icon stasis (i.e. Bard OriginalSquare Bard's Tempered Fate Tempered Fate).
  • Fiora OriginalSquare Fiora's Riposte Riposte can be used to prevent becoming a Vessel if used before the Spirit is killed or while leaving the tether's range.
  • Sion OriginalSquare Sion's Spirit cannot be spawned during Glory in Death Glory in Death. Spirits created before Sion's Omen of Death zombie state will remain active.

Leap of Faith
COST: 100 Mana
COOLDOWN: 120 / 95 / 70
Leap of Faith

Active: Illaoi leaps into the air Unstoppable icon unstoppably before slamming her idol into the ground, dealing physical damage to nearby enemies. For each enemy champion hit, a Tentacle is summoned for 8 seconds (up to a maximum of 6 summons).

Physical Damage:
150 / 250 / 350 (+ 50% bonus AD)

For the duration, Harsh Lesson Harsh Lesson's Cooldown reduction icon cooldown is halved, all Tentacles awakened by Illaoi are Playful untargetable, will not show their hitboxes, nor go dormant, and will take half the amount of time to make an attack.

"There are kind and gentle gods. Mine isn't one of those."

  • Flash Flash can be used during the cast time, with the ability being used at the new location.
  • Command Hallucinate Clones also count as champions for the summoning of the Prophet of an Elder God Tentacle.
  • Illaoi spawns the Prophet of an Elder God Tentacle 725 range away from her, unless there's a natural wall blocking the way making the Tentacle spawn on it, based on:
    • The direction she's facing.
      • She will always face at the nearest Sight icon visible enemy champion, in Leap of Faith's range, the instant she leaps.
      • If there's no enemy champion nearby, she faces in the direction of the cursor.
      • Flash Flashing mid-animation will change the spawning direction to where the cursor is pointed, regardless of the nearest enemy champion.
    • How many champions she hits.
      • 1+ champions: one Prophet of an Elder God Tentacle at 0 degrees.
      • 2+ champions: one Prophet of an Elder God Tentacle at 60 degrees.
      • 3+ champions: one Prophet of an Elder God Tentacle at 300 degrees.
      • 4+ champions: one Prophet of an Elder God Tentacle at 120 degrees.
      • 5+ champions: one Prophet of an Elder God Tentacle at 240 degrees.
      • 6+ champions: one Prophet of an Elder God Tentacle at 180 degrees.
    • If there are no walls nearby, spawning the last Prophet of an Elder God Tentacle will form a perfect hexagon.
  • Spell Shield Spell shields will block the ability's damage but will not prevent Tentacles from spawning.
  • Going into Stasis icon stasis (i.e - by Revival icon resurrection) during the leap will not stop the ability from dealing damage or spawning Tentacles.
  • Using Harsh Lesson Harsh Lesson after Illaoi drops down will command Tentacles to instantly attack, regardless if they were already attacking. Their old attack will keep on going and will hit while the second attack is on its animation attack.
  • Using Harsh Lesson Harsh Lesson an instant before Leap of Faith's buff finishes will delay the Tentacle's attack.


Control type The Prophet of an Elder God Tentacle is commanded to attack each time a target in its range gets hit by Harsh Lesson Harsh Lesson.

The Tentacle is also able to periodically automatically attack the closest Vessel Spirit or Vessel in its range.

Its attacks get queued up if it receives more than one attack command. The queued attacks will always have 1 attack speed, even if affected by Leap of Faith Leap of Faith's buff.

If a Tentacle is destroyed while attacking, the Tentacle will first finish its attack and then die, without being able to queue up other commands.

Tentacles can receive attack commands 0.25 seconds after dying, and are able to queue up other commands during the timeframe.

Tentacles commanded to attack because of a Vessel Vessel have an agro range based on the target's Range model edge, while those commanded to attack by Harsh Lesson Harsh Lesson have an agro range based on the target's Range center center.

Target type Ward (can be Teleport teleported to).
On-hit effects Hits through Counter Strike Counter Strike.
Spell effects Applies spell effects as an area of effect ability.

Tentacles that hit the same target within 0.5 seconds of each other deal 50% less damage than the previous Tentacle, up to a cap of 75% less damage than the first.



The Tentacle damages all non-structure enemies it hits along its length, Heal power healing Illaoi for 5% missing health if it hits one or more enemy champions. Healing stacks multiplicatively if more Tentacles attack at the same time, calculated by this formula: (maximum health − current health) × (1 − 0.95n), with 'n' the number of Tentacle hits.


The Tentacle alerts Illaoi whenever it takes damage.


The Tentacle becomes dormant if Illaoi or a Vessel are not around, disabling its ability to start attacks and disappearing after 30 seconds of dormancy. The Tentacle instantly reactivates if Illaoi or a Vessel move back in range.


The Tentacle enrages for 8 seconds after Leap of Faith Leap of Faith has been cast, becoming untargetable, unable to show its hitbox, unable to go dormant and taking half the amount of time to make an attack.


All Tentacles around 1000 range of an enemy champion are Sight icon revealed through the fog of war and remain revealed once first seen.
When about to Tentacle Smash slam it Sight icon reveals the targeted spot to allies.
The Tentacle grants Sight icon sight of nearby Control Ward item Control Wards.


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