The Codex of Power is the source of every Legendary Aspect in Diablo 4. This guide covers how to unlock all 200+ aspects.
How Codex Works
- Complete specific dungeons to unlock aspects
- Aspects become available for imprinting on gear
- Imprinting cost: Aspect + Forgotten Soul + Veiled Crystal
Must-Unlock Aspects
| Aspect | Dungeon | Priority |
|---|---|---|
| Glacial Fissure | Blind Burrows | S (Sorcerer) |
| Convergence | Champion's Demise | S (Rogue) |
| Umbral | Sepulcher of the Forsworn | S (Necro) |
| Ancestral Force | Caldera Gate | S (Barbarian) |
| Vasily's Prayer | Endless Gates | S (Druid) |
| Wing of the Eagle | Sepulcher of the Forsworn | S (Spiritborn) |
| Conceited | Dark Ravine | A (general) |
Imprinting Strategy
Always imprint S-tier aspects on Ancestral gear with the right slot. Use Codex recipes for guaranteed rolls.
Cost to Imprint
| Slot | Cost |
|---|---|
| 1H Weapon | 5 Forgotten Soul + 1 Veiled Crystal |
| 2H Weapon | 7 Forgotten Soul + 2 Veiled Crystal |
| Helm | 3 Forgotten Soul + 1 Veiled Crystal |
| Chest | 5 Forgotten Soul + 2 Veiled Crystal |
| Pants | 4 Forgotten Soul + 1 Veiled Crystal |
Tier Placement
| Aspect Tier | Imprint Priority |
|---|---|
| S | Imprint first |
| A | Imprint second |
| B | Situational |
Pros and Cons
Pros
- Free aspects for life
- No RNG after unlock
Cons
- Need Forgotten Souls
- Many dungeons to clear
FAQ
Q: How to unlock Codex aspect?
A: Complete the dungeon's Tier 25+ for guaranteed unlock.
Q: Forgotten Soul farming?
A: Helltide chests + Tree of Whispers caches.
Q: Can I lose Codex aspect?
A: No, unlocked aspects are permanent.
Q: First aspect to unlock?
A: Glacial Fissure for Sorcerer or Ancestral Force for Barbarian.
Q: Codex aspect vs imprinted?
A: Same effect. Codex saves the aspect for re-imprinting.
Q: Aspect tier list?
A: See our Mythic Uniques Tier List.
Q: How many aspects total?
A: 200+ aspects in Season 6, with more added each season.
Related Guides
Last updated for Season 6 (2026-09-28).