Resource Codex of Power Legendary Aspects - Diablo 4

List of Resource Codex of Power & Legendary Aspects

The Codex of Power is a collection of all Legendary Aspects that were unlocked by completing specific dungeons for the first time.

Resource: Helm, Amulet(Power increased by 50%), Ring.

Aspect Name	Class	Category	Aspect Power	Dungeon	Region	Location
Aspect of the Umbral	All classes: Barbarian, Druid, Necromancer, Rogue, Sorceress	Resource	Restore 1 of your Primary Resource when you Crowd Control an enemy.	Champion's Demise	Dry Steppes	Unlocked by completing dungeon Champion's Demise in Dry Steppes
Aspect of Echoing Fury	Barbarian	Resource	Your Shout Skills generate 2.0 Fury per second while active.	-	Kehjistan	Progress Campaign in Kehjistan to unlock
Aspect of the Relentless Armsmaster	Barbarian	Resource	Gain 20% increased Fury Generation while all damage bonuses from the Walking Arsenal Key Passive are active.	Calibel's Mine	Scosglen	Unlocked by completing dungeon Calibel's Mine in Scosglen
Slaking Aspect	Barbarian	Resource	Lucky Hit: You have up to a 30% chance to gain 20 Fury when Rend deals direct damage to at least one Bleeding enemy.	Maulwood	Fractured Peaks	Unlocked by completing dungeon Maulwood in Fractured Peaks
Aspect of Unrelenting Fury	Barbarian	Resource	Killing an enemy with a Core Skill refunds 10.0% of its base Fury cost. Can only happen once per Skill cast.	Hallowed Ossuary	Fractured Peaks	Unlocked by completing dungeon Hallowed Ossuary in Fractured Peaks
Aspect of the Changeling's Debt	Druid	Resource	Damaging a Poisoned enemy with a Werebear Skill will instantly deal 120% of the Poisoning damage and consume the Poisoning.	Conclave	Kehjistan	Unlocked by completing dungeon Conclave in Kehjistan
Mangled Aspect	Druid	Resource	When you are struck as a Werebear you have a 20% chance to gain 1 Spirit.	Immortal Emanation	Fractured Peaks	Unlocked by completing dungeon Immortal Emanation in Fractured Peaks
Aspect of the Unsatiated	Druid	Resource	After killing an enemy with Shred, your next Werewolf Skill generates 20% more Spirit and deals 20% increased damage.	Tormented Ruins	Fractured Peaks	Unlocked by completing dungeon Tormented Ruins in Fractured Peaks
Aspect of the Calm Breeze	Druid	Resource	Lucky Hit: Wind Shear has up to a 5% chance to fully restore your Spirit.	Grinning Labyrinth	Dry Steppes	Unlocked by completing dungeon Grinning Labyrinth in Dry Steppes
Fastblood Aspect	Necromancer	Resource	Blood Orbs reduce your Ultimate Cooldown by 0.5 seconds. Blood Orbs Heal you for 15% of your Maximum Life when picked up.	-	Hawezar	Progress Campaign in Hawezar to unlock
Flesh-Rending Aspect	Necromancer	Resource	After Decompose spawns a Corpse, gain 10 Essence.	Nostrava Deepwood	Fractured Peaks	Unlocked by completing dungeon Nostrava Deepwood in Fractured Peaks
Hulking Aspect	Necromancer	Resource	Your Golem has a 10% chance to reduce its active Cooldown by 2 seconds and a 5% chance to spawn a Corpse each time it damages an enemy with its normal attack.	Sepulcher of The Forswom	Kehjistan	Unlocked by completing dungeon Sepulcher of The Forswom in Kehjistan
Aspect of Potent Blood	Necromancer	Resource	While at full Life, Blood Orbs grant 10 Essence. Blood Orbs Heal you for 15% of your Maximum Life when picked up.	Betrayer's Row	Dry Steppes	Unlocked by completing dungeon Betrayer's Row in Dry Steppes
Requiem Aspect	Necromancer	Resource	You gain 3.0 maximum Essence per active Minion.	-	Scosglen	Progress Campaign in Scosglen to unlock
Aspect of Torment	Necromancer	Resource	Critical Strikes with Bone Skills increase your Essence Regeneration by 20% for 4 seconds.	Black Asylum	Fractured Peaks	Unlocked by completing dungeon Black Asylum in Fractured Peaks
Energizing Aspect	Rogue	Resource	Damaging an Elite enemy with a Basic Skill generates 5 Energy.	-	Fractured Peaks	Progress Campaign in Fractured Peaks to unlock
Ravenous Aspect	Rogue	Resource	Killing a Vulnerable enemy grants you 50% increased Energy Regeneration for 4 seconds.	Shifting City	Dry Steppes	Unlocked by completing dungeon Shifting City in Dry Steppes
Aspect of Efficiency	Sorceress	Resource	Casting a Basic Skill reduces the Mana cost of your next Core Skill by 10%.	Domhainne Tunnels	Scosglen	Unlocked by completing dungeon Domhainne Tunnels in Scosglen
Incendiary Aspect	Sorceress	Resource	Lucky Hit: Burning Damage has up to a 5% chance to restore 10 Mana.	Tomb of the Saints	Kehjistan	Unlocked by completing dungeon Tomb of the Saints in Kehjistan
Prodigy's Aspect	Sorceress	Resource	Using a Cooldown restores 15 Mana.	-	Hawezar	Progress Campaign in Hawezar to unlock
Recharging Aspect	Sorceress	Resource	Each time Chain Lightning bounces off you, gain 4 Mana.	-	Fractured Peaks	Progress Campaign in Fractured Peaks to unlock

Legendary Aspects can be imprinted on Rare and Legendary items at the Occultist. After imprinting:

Rare items turn into Legendaries with the affixes that were previously on that item, plus the newly added Legendary Power.
Legendaries have their existing Legendary Power overwritten with the new one.

Codex of Power Aspects can be applied indefinitely. Regularly extracted Legendary Aspects are consumed when they are imprinted onto an item. An item can only be imbued once!

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Legendary Aspects Category

Legendary Aspects can only be imprinted onto specific item slots which are determined by the category of the Legendary Aspect itself. Each Legendary Aspect belongs to a specific category, including Defensive, Offensive, Resource, Utility, or Mobility and in some cases the item slot you choose for a Legendary Aspect can also increase the imprinted Legendary Power on the item

	Defensive	Offensive	Resource	Utility	Mobility
1H Weapon	-	✅	-	-	-
2H Weapon (Power increased by 100%)	-	✅	-	-	-
Off-Hand	✅	-	-	-	-
Helm	✅	-	✅	✅	-
Chest	✅	-	-	✅	-
Pants	✅	-	-	-	-
Boots	-	-	-	✅	✅
Gloves	-	✅	-	✅	-
Amulet (Power increased by 50%)	✅	✅	✅	✅	✅
Ring	-	✅	✅	-	-

Limitations

You have an opportunity to go and basically override the existing legendary power on this and put in the new power they've just collected to the Codex of Power. So in this way, players get this deterministic way to kind of collect a series of these legendary powers that are out there in the game for them to find. But it's not all of them.

You can only find some of the legendary powers overall in the game. There are over 120 dungeons in the game. So this represents like a lot of really exciting and interesting things for you to collect as you're going through these areas.
Also, you don't just find legendary powers for your class. You'll find legendary powers for all of the class as you go. And some ones that can work in multiple classes as. And then we think this is really cool because every time you find an aspect that you can put in your Codex of Power, this is now available to all characters in that realm.
But another limitation for the Codex of Power, in addition to not actually having the ability to collect all of legendary powers again, there's many, many more for you to find as you're playing through Diablo IV those powers also are always rolled at the lowest level of power possible. So it is always better for you to go find a legendary item that has the power that you're interested in, and then you could choose to use that item directly or extract the power from that item into an aspect crystal. Then go in and print into your own item of your choosing.