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Cthulhu Guide

2 3 6,176
by The6thEspada updated September 11, 2021

Smite God: Cthulhu

Build Guide Discussion 5 More Guides
Tap Mouse over an item or ability icon for detailed info

Build Summary


Build Item Sentinel's Gift Sentinel's Gift
Build Item Glowing Emerald Glowing Emerald
Build Item Healing Potion Healing Potion
Build Item Mana Potion Mana Potion
Build Item Heavenly Wings Heavenly Wings


Build Item Sentinel's Embrace Sentinel's Embrace
Build Item Gauntlet of Thebes Gauntlet of Thebes
Build Item Pridwen Pridwen
Build Item Sovereignty Sovereignty
Build Item Shogun's Kusari Shogun's Kusari
Build Item Mantle of Discord Mantle of Discord
Build Item Belt of Frenzy Belt of Frenzy

Cthulhu's Skill Order

Sanity Break / Sever

1 X Y
Sanity Break / Sever
3 8 11 12 15

The Mire / Devastate

2 A B
The Mire / Devastate
1 4 6 7 10

Rushing Terror / Transfuse

3 B A
Rushing Terror / Transfuse
2 14 16 18

Descend Into Madness

4 Y X
Descend Into Madness
5 9 13 17 20
Sanity Break / Sever
3 8 11 12 15

Sanity Break / Sever

1 X
Sanity Break: Cthulhu sends out a terrifying blast of energy, dealing damage to all enemies hit and reducing their Attack Speed. Enemies hit by this ability also do reduced damage to Cthulhu for 6s.
This ability applies 1 stack of Torment, 2 if the enemy hit is facing Cthulhu or Fears them instead if they are afflicted with Insanity. Successfully consuming Insanity permanently increases the base mitigation of this ability.

Ability Type: Cone, Fear, Damage
Damage: 100 / 150 / 200 / 250 / 300 (+40% of your Magical Power)
Attack Speed Slow: 20 / 22.5 / 25 / 27.5 / 30% for 3s
Fear Duration: 1.5s
Damage Mitigation: 20% + 0.5% (Max 30%)
Cost: 60
Cooldown: 10s

Sever (Ultimate Form): Cthulhu swipes down at the ground beneath him, creating 3 large projectiles. These projectiles damage enemies and apply a stacking Protection Reduction debuff. This ability does not proc item effects.

Ability Type: Line, Debuff, Damage
Damage: 100 / 140 / 180 / 220 / 260 (+25% of your Magical Power)
Protection Reduction: 4% stacking up to 4 times
Debuff Duration: 5s
Cost: 0
Cooldown: 1s
The Mire / Devastate
1 4 6 7 10

The Mire / Devastate

2 A
The Mire: Cthulhu summons a portal creating a slowing field of eldritch mire at the target location. While Cthulhu channels, The Mire continues to grow as the portal fires out two masses of corruption that hit and damage all enemies in the field.

The first shot also Slows enemies while the second Roots them, both hits applying 1 stack of Torment. Cancelling the ability early stops The Mire from growing or the portal from firing additional shots.

Ability Type: Circle, Crowd Control, Damage
Damage per shot: 60 / 105 / 150 / 195 / 240 (+30% of your Magical Power)
Slow: 10%
Corruption Slow: 35%
Corruption Slow/Root Duration: 1s
Mire Duration: 3s after ability cancel/end
Cost: 50 / 55 / 60 / 65 / 70
Cooldown: 18 / 17 / 16 / 15 / 14s

Devastate (Ultimate Form): Cthulhu fires a devastating blast of psychic energy that damages and knocks up enemies.

Ability Type: Circle, Knockup, Damage
Damage: 140 / 175 / 210 / 245 / 280 (+20% of your Magical Power)
Cost: 60 / 65 / 70 / 75 / 80
Cooldown: 5s
Rushing Terror / Transfuse
2 14 16 18

Rushing Terror / Transfuse

3 B
Rushing Terror: Cthulhu creates two twisting projectiles at his sides as he unfurls his wings and charges forwards, damaging, stunning and knocking away enemies hit. The projectiles follow at a slightly slower pace but travel further, damaging enemies as well. Enemies hit by Cthulhu or the projectiles gain 1 stack of Torment.

Ability Type: Dash, Knockback, Damage
Damage: 70 / 110 / 150 / 190 / 230 (+30% of your Magical Power)
Stun Duration: 0.4s
Projectile Damage: 40 / 70 / 100 / 130 / 160 (+20% of your Magical Power)
Cost: 60 / 65 / 70 / 75 / 80
Cooldown: 16s

Transfuse (Ultimate Form): Cthulhu transfuses his own life force into the area around him giving Allies Health, Movement Speed and Power. Enemies are also hit, taking more damage the closer they are to Cthulhu. This ability damages Cthulhu for 4% of his Maximum Health. If Cthulhu is below 20% Health, this ability does not damage Cthulhu but all Ally effects are reduced by 50%.

Ability Type: Circle, Heal, Damage
Damage: 120 / 140 / 160 / 180 / 200 (+20% of your Magical Power)
Ally Healing: 5 / 6 / 7 / 8 / 9% Max Health
Power: 20 / 25 / 30 / 35 / 40
Movement Speed: 20%
Duration: 3s
Cost: 70
Cooldown: 6s
Descend Into Madness
5 9 13 17 20

Descend Into Madness

4 Y
Cthulhu reveals his true form as he plunges the battlefield into R’lyeh while any enemies caught nearby are damaged.

In this form Cthulhu gains increased Health, becomes immune to Crowd Control and gains access to new abilities. Enemies near Cthulhu gain stacks of Torment, increasing in pace if they are facing him. Enemies also suffer the debuff effects of Sanity Break, causing them to deal less damage to Cthulhu.

Ability Type: Circle, Buff, Damage
Damage: 160 / 205 / 250 / 295 / 340 (+50% of your Magical Power)
Max Health: 20%
Duration: 10 / 11 / 12 / 13 / 14s
Debuff Radius: 50
Cost: 100
Cooldown: 120s

*NOTE* Cthulhu cannot use relics while in his ultimate form.

Extended Build


Build Item Ethereal Staff Ethereal Staff
Build Item Witchblade Witchblade
Build Item Spirit Robe Spirit Robe
Build Item Hide of the Urchin Hide of the Urchin
Build Item Pestilence Pestilence
Build Item Oni Hunter's Garb Oni Hunter's Garb
Build Item Emperor's Armor Emperor's Armor
Build Item Lotus Sickle Lotus Sickle
Build Item Mail of Renewal Mail of Renewal
Build Item Magi's Cloak Magi's Cloak
Build Item Midgardian Mail Midgardian Mail
Build Item Stone of Binding Stone of Binding
Build Item Runic Shield Runic Shield
Build Item Void Stone Void Stone
Build Item Talisman of Energy Talisman of Energy
Build Item Winged Blade Winged Blade
Build Item Heartward Amulet Heartward Amulet
Build Item Spectral Armor Spectral Armor
Build Item Relic Dagger Relic Dagger

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Collapse All Comments

Big_mowi4011 | September 10, 2021 6:36pm
U can't build void shield on magical gods.
The6thEspada | September 10, 2021 6:51pm
The6thEspada | September 9, 2021 3:13pm
I would like help optimizing the build.
Branmuffin17 (391) | September 9, 2021 3:49pm
Hey Espada,

Okay, so you're going for a support build. First thing to point out, Cthulhu isn't probably the best choice for Supp even though he's a Guardian. His normal role is Solo. With that out of the way, he's not terrible in Supp, and so if you're going for that, then here are my comments:
  • Your start is fine, though I'd probably pick up a couple more potions.

  • Thebes and Sov are good standard supp items. You can obviously have some flexibility with something like Sov, where you could prioritize Pridwen if you wanted immediately after Thebes.

  • Situationally you could consider Stone of Binding early for aggression if you're very comfortable playing him. You'd sell it late.

  • While Bulwark of Hope got a nice buff, it's not really a Supp item. I'd consider it more of a Solo item. With Supp, you are usually well-served by going with team-based or counter consider something like Shogun's Kusari for your magical prots. Also, it would be something I'd get AFTER Prid, because you want some CDR by that point of the build.

  • Ethereal Staff is more of a situational item that you'd get for bruiser function. While the health steal is great, again you want to consider counter items. It's fine if you want to put it in your example build, but you should have an additional item list for situational items that you might use in place of Bulwark and E-Staff.

  • I don't recommend Sentinel's Boon for your upgrade. I'd just stick with the tried-and-true Sentinel's Embrace.

  • Depending on your relic choices (which you don't mention at all), you might also consider items like Relic Dagger, counter items like Witchblade or Spectral Armor, or CDR+Prot items like Mantle of Discord.
Hope this helps.
The6thEspada | September 9, 2021 4:36pm
Thanks, I'll try to fix it.
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League of Legends Build Guide Author The6thEspada
Cthulhu Guide
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