Diablo 4 is set to release on 6 June 2023 (2nd June for Early Access), and we are excited to see what new and powerful features will be coming with the game. One new feature, in particular, is the Codex of Power and its alignment with Legendary Aspects in Diablo 4.
So in this guide, we're going to break down everything you need to know about the Codex of Power and the Legendary Aspects that come with it in Diablo 4. We'll also touch on some of its limitations and how its best used in the game.
Update on 24 March 2023: We've updated this article with the latest Diablo 4 Codex of Power information so you know everything about Legendary Aspects and how to use them. Test it out in the Diablo 4 Open Beta!
Learn about the Diablo 4 Open Beta update and the issues/troubles players can expect when it kicks off on 24 March at 09:00 PST.
Diablo 4 Codex Of Power & Legendary Aspects Explained
Simply put, the Codex of Power is an item in Diablo 4 that stores a collection of Legendary Aspects that you collect as you play through dungeons in the game. It can also store Legendary Aspects extracted from certain pieces of gear thanks to the "Aspect Extraction" ability of the Occultist, as we've detailed in our Occultist guide here.
Once you have your Codex of Power chocked to the brim with Legendary Aspects, you can take it to the Occultist and have them imprint these Aspects on Rare and Legendary pieces of gear. Rare items turn into Legendaries with the affixes that were previously on that item, plus the newly added Legendary Power, while Legendaries have their existing Legendary Affix overwritten with the new one.
Something to note is that when you collect a Legendary Aspect, you can imprint it onto gear items indefinitely. But if you extract an Aspect, it's immediately consumed when you imprint it, meaning it's only usable once. Also, while the Codex of Power is a great way to reroll your Aspects and target specific builds for your characters, it does come with a few drawbacks, namely:
- Not All Legendary Aspects: The Codex of Power does not contain every single Aspect of every single Legendary in the game as you fight through the game's dungeons. This means that you need to do some grinding to defeat armies of demons and find some Legendaries the old-fashioned way.
- Lowest Roll Imprint: When an Aspect from the Codex of Power is imprinted, it does so with the lowest roll possible for that item. So if you wanted to imprint "Thorns damage done deals a [20-40]% chance to deal damage to all opponents around," it would automatically Imprint 20% probability. So it will always imprint the lowest roll for the Aspect.
And that's everything you need to know about the Codex of Power and Legendary Aspects in Diablo 4. Be sure to think carefully about your Aspects and which pieces of gear they'll go best with to give you the best chances of success in Diablo 4.
For more Diablo 4, be sure to check out our dedicated section or some of our Guides & Tutorials just below:
Diablo 4 Class Builds - Best Barbarian Build | | Best Necromancer Build | Best Sorcerer Build | Best Druid Build | Best Rogue Build | All Classes Tier List | Best Class For Beginners | Build Calculator |
Class Mechanics: Sorcerer Enchantment System | Barbarian Arsenal | Rogue Specialization | Necromancer Book of the Dead | Druid Specialization |
Items - Healing Vial | Item Slot Types | Transmogs/Wardrobe | Salvage Items | Durability & Repair | Trading Items | All Unique Items & Stats | Set Items | Item Quality/Rarity Levels | Elixirs | Butcher's Cleaver |
Features: Beginners Guide | Impressions From Beta |
Quests: Ritual Tower Key | Forgive Me Side Quest | Traveler's Prayer Side Quest | Secret Of The Spring Riddle | Raising Spirits Side Quest |
General D4 Guides: Legendary & Gold Farming | Town Portal | Inventory Size | Stash Size | Beat Lilith's Lament | Beat Den Mother Boss | Beat Lord Avitus Boss | Beat Blood Bishop Boss | Reset Dungeons | Gathering Legions Guide | The Butcher Boss | Leave Dungeons | All Stronghold Locations |
Diablo 4 Tech Guides - Ray Tracing Support | Couch Co-Op | Server Regions | PC Requirements & File Size | Diablo 4 Servers Down? | Connection Issues Fix | Crashing Issues Fix | Unable To Install or Patch | Low FPS Fix | Error Code 34202 Fix | Disable Fog & Glare | Stuck in Queue Fix | Console Issues | PC Issues | Enable & Disable Chat Bubbles | Hit Max Level Fast | Best PC Settings High FPS | Error Code 395002 Fix | Error Code 316719 Fix | D4 on Steam Deck |
Crafting/Vendors - Jeweler | Gambling & Obols | Occultist | Alchemist | Blacksmith | | Monster Parts | Skins | Ore | Plants |
Legendary Aspects - Codex of Power | Sorcerer Legendary Powers | Barbarian Legendary Powers | Rogue Legendary Powers | Necromancer Legendary Powers | Druid Legendary Powers
Activities - Strongholds | Nightmare Dungeons | Silent Chests | Altars of Lilith |
Story & Lore - Campaign Length | Who is Lilith? | Who is Inarius | Deckard Cain | Secret Cow Level |
Zones - Fractured Peaks Overview | Scosglen | Kehjistan | Dry Steppes | Hawezar | All Waypoint Locations |
Mounts - Temptation Mount | Diablo 4 Class Dismount Mechanics | Unlock & Customize |
Seasons - Battle Pass Price | Diablo 4 Season Duration |
Gameplay Systems - Armor System | Clans | Primary Stats & Effects | Shrines & Buffs | Renown & Reputation | Max Level & Paragon Cap | World Tier Difficulty Levels | Followers/Mercenaries |
World Bosses - Ashava | Avarice | Wandering Death | Beat Ashava | Ashava Spawn Location |
Diablo 4 Misc - Statue of Inarius Price & Specs | Wolf Pack Cosmetic | Codes | Diablo 4 Free-to-Play? | Mother's Inked Title | Collector's Edition | How To Respec | Stagger Mechanic | Patch Notes | Asmongold Diablo 4 Beta Thoughts |
Diablo 4 PvP - Coming soon!
Our section keeps growing, so check for new guides daily! Don't forget to pick up one of the Diablo 4 Editions and join the fight to save Sanctuary soon.