Necromancer Codex of Power - Diablo 4

List of Necromancer 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.

Aspect Name	Class	Category	Aspect Power	Dungeon	Region	Location
Blighted Aspect	Necromancer	Offensive	You deal 50% increased damage for 6 seconds after the Shadowblight Key Passive damages enemies 10 times.	-	Hawezar	Progress Campaign in Hawezar to unlock
Blood-bathed Aspect	Necromancer	Offensive	Blood Surge's nova echoes again after a short delay, dealing 70% less damage.	-	Fractured Peaks	Progress Campaign in Fractured Peaks to unlock
Blood Seeker's Aspect	Necromancer	Offensive	Blood Lance deals 15% increased damage to its primary target per lanced target.	Mercy's Reach	Fractured Peaks	Unlocked by completing dungeon Mercy's Reach in Fractured Peaks
Aspect of Bursting Bones	Necromancer	Offensive	When a segment of Bone Prison is destroyed or expired, it deals 3 damage in an area around itself.	Path of the Blind	Dry Steppes	Unlocked by completing dungeon Path of the Blind in Dry Steppes
Aspect of Grasping Veins	Necromancer	Offensive	Gain 10% increased Critical Strike Chance for 6 seconds when you cast Corpse Tendrils. You deal 30% bonus Critical Strike Damage to enemies damaged by Corpse Tendrils.	Corrupted Grotto	Kehjistan	Unlocked by completing dungeon Corrupted Grotto in Kehjistan
Aspect of the Damned	Necromancer	Offensive	You deal 30% increased Shadow Damage to enemies afflicted by both Decrepify and Iron Maiden.	Uldur's Cave	Kehjistan	Unlocked by completing dungeon Uldur's Cave in Kehjistan
Aspect of Empowering Reaper	Necromancer	Offensive	Critical Strikes from Sever have a 10% chance to spawn a pool of Blight under th target that deals 20% bonus damage. This effect can only happen once every 3 seconds.	Flooded Depths	Scosglen	Unlocked by completing dungeon Flooded Depths in Scosglen
Aspect of Plunging Darkness	Necromancer	Offensive	Bone Prison spawns a pool of Blight that deals 50% bonus damage over 6 seconds.	Rimescar Cavern	Fractured Peaks	Unlocked by completing dungeon Rimescar Cavern in Fractured Peaks
Aspect of Reanimation	Necromancer	Offensive	Your Skeletons gain increased damage while alive, up to 20% after 10 seconds.	-	Scosglen	Progress Campaign in Scosglen to unlock
Sacrificial Aspect	Necromancer	Offensive	Your Sacrifice bonuses are increased by 15%.	Ruins of Eridu	Hawezar	Unlocked by completing dungeon Ruins of Eridu in Hawezar
Splintering Aspect	Necromancer	Offensive	Bone Spear's primary attack makes enemies hit beyond the first Vulnerable for 1.5 seconds. Bone Shards from Bone Spear deal 50% bonus damage to Vulnerable enemies and pierce them.	-	Dry Steppes	Progress Campaign in Dry Steppes to unlock
Aspect of Swelling Curse	Necromancer	Offensive	Bone Spirit deals increased damage based on distance traveled, up to 15%.	Hive	Scosglen	Unlocked by completing dungeon Hive in Scosglen
Unyielding Commander's Aspect	Necromancer	Offensive	While Army of the Dead is active, your Minions gain 70% Attack Speed and take 90% reduced damage.	Faceless Shrine	Hawezar	Unlocked by completing dungeon Faceless Shrine in Hawezar
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
Torturous Aspect	Necromancer	Utility	Enemies afflicted by your Iron Maiden have a 15% chance to be Stunned for 1 second when they deal direct damage.	-	Kehjistan	Progress Campaign in Kehjistan 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.