Ethereal Key Charge
“Used to open obscured chests. Earned by completing events and magic-mirror challenges and by defeating enemies that are veteran rank or higher. Disappears when leaving a map.
— In-game description
Ethereal Key Charge is an effect required to open Small, Medium, and Large Obscured Chests that appear around an area after completing its Magic Mirror challenge. It is unlocked upon training the 
Secrets Unearthed mastery.
Gaining charges[edit]
| Method | Type |  |
Notes |
|---|---|---|---|
| Events | Dynamic event | 5 | Including Rift Hunting events and  Hero challenges.
|
| Champion events | 10 | Some champion events only give the standard amount. [verification requested] | |
| Legendary events | 15 | ||
| Enemies | Veteran | 1 | Only enemies rewarding  experience will give charges. For example, elites during hero challenges or rift events will not give additional charges. |
| Elite | 2 | ||
| Champion | 3 | ||
| Legendary | 4 | ||
| Masteries | Magic Mirror challenge | 5 | Requires  Prosperity Unending.
|
| Entering Castoran maps | 5 (+3) |
Requires  Lingering Magic; additional charges with  Obscured Riches.
Once per day upon entering each map. |
Other activities such as adventures, hearts, and jumping puzzles do not reward any charges.
Meta events and mini-dungeons[edit]
Because meta events and mini-dungeons consist of multiple enemies and dynamic events, they provide a large amount of charges. It is recommended to spend the brief downtime between events to open nearby chests as the charges will otherwise cap out during most chains.
[Group Event] Hammerhart Rumble! (80) — 23 charges total
- Captain Jessica Hammerhart — 4 charges
- First Mate Jimmy Hammerhart — 4 charges
- Event completion — 15 charges
- Secrets of the Weald — 28+ charges
[Group Event] Destroy the northern Inquest excavator (80), eastern, or southern — 8+ charges
- Additional charges from veterans and elites
- Champion Mark IX Centurion Golem — 3 charges
- Event completion — 5 charges
- [Group Event] Subdue Gwyllian, Seneschal of the Forest (80) — 20+ charges
- Additional charges from Veteran enemies
[Group Event] Defeat Biomancer Plezzi (80), Golemancer Graxx, or Saboteur Dribb — 5 charges- Event completion — 15 charges
- Gwyllian does not give additional legendary charges.
- The Basilica Vaults — 35+ charges total
- Pre-events:
Help Explorer Dhexx decipher the relics (10) — 5+ charges
- Spawns a couple veterans
- Event completion — 5 charges
- Survive the trap room (80) — 5 charges
[Group Event] Defeat the ancient defenses and gather their power for Isgarren (80) — 7-8 charges
- Elite/champion — 2/3 charges
- Event completion — 5 charges
- [Group Event] Gather the loose magic for Isgarren (80) — 5 charges
[Group Event] Defeat the champion enchanted weapon (80) — 13 charges
- Champion — 3 charges
- Event completion — 10 charges
- Despite being a meta event, it does not refresh Lingering Magic.
- Pre-events:
- Shackles of the Ancients — 67+ charges total
- Capture and hold chambers — 8+ charges
- Spawns additional veterans and elites
- Repairing conduits — 5 charges
- [Group Event] Defeat Kela's minions and destroy the All Seer's chains (80) — 8 charges
- Only one of the champions counts[verification requested]
- The All Seer — 46 charges total
[Group Event] Release souls from the feretory (80) — 15 charges
- The avatars do not give additional legendary charges.
- [Group Event] Defeat the enhanced creature to sever the chain (80) — 8 charges
- Capture and hold chambers — 8+ charges
- The Temple of Abnegation — 23++ charges total
- Multiple elites giving additional charges.
- Despite being a meta event, it does not refresh Lingering Magic.
Using charges[edit]
| Chest Type | Without mastery |  Efficient Magic
|
|---|---|---|
| Small Obscured Chest | 3 | 2 |
| Medium Obscured Chest | 6 | 4 |
| Large Obscured Chest | 15 | 10 |
With all masteries trained, the following number of charges are needed to open all chests:
- Shipwreck Strand — 152 charges total
- Small — 36 chests — 72 charges
- Medium — 10 chests — 40 charges
- Large — 4 chests — 40 charges
- Starlit Weald — 160 charges total
- Small — 36 chests — 72 charges
- Medium — 12 chests — 48 charges
- Large — 4 chests — 40 charges
- Eternity's Garden — 142 charges total
- Small — 32 chests — 64 charges
- Medium — 12 chests — 48 charges
- Large — 3 chests — 30 charges
Notes[edit]
- Other chests such as Aetherlocation Treasures, Long-Lost Keepsake Boxes, and Seer Storage Chests do not require charges to open.
- Trying to open a chest with fewer charges than than required will show the following System Message: You need X ethereal key charges to open this.
- Charges are removed upon changing maps in any way, such as entering a story instance or joining another instance.
