Mystical Key Crimson Desert Quest Guide
Equip the Hernandian Attire, get into Hernand Castle, find the locked room, and step through the Abyss Gate.
What Is Mystical Key in Crimson Desert
Mystical Key is a Main Quest in Crimson Desert's Chapter 1 that unlocks after all three post-Mysterious Man quests are done: True Wisdom in Kindness, Actions Speak Louder than Words, and Heart Beyond Borders. Kliff uses the Engraved Key to open an Abyss Gate hidden inside Hernand Castle.
Mystical Key Quest Objectives
- 01 Examine the Engraved Key
- 02 Go to Hernand Castle
- 03 Find the room the key opens
- 04 Go through the shining gate
Full Walkthrough
01 Examine the Engraved Key
Open your inventory and examine the Engraved Key from the True Wisdom in Kindness quest. This triggers the objective to head to Hernand Castle.
02 Go to Hernand Castle
Make sure the Hernandian Attire is equipped before approaching the gate. The guards will check you and let you through without issue. If you're wearing the wrong outfit, you'll repeat the whole refusal scene, so just put it on first.
Inside, pass through the training yard and Contribution Shop, then go through the inner castle gate. Enter the main building and take the staircase immediately to your right. At the top, walk into the next room, which opens into a big hallway with nobles milling about. That unlocks the next objective.
03 Find the Room the Key Opens
In the big hallway, you'll overhear a maid mention that a certain door is always locked. That's the Alchemist's Chamber on your left. Open it and go inside.
04 Go Through the Shining Gate
Open the glowing chest in front of the desk to get the Faded Abyss Artifact. The Abyss Gate will then appear next to the shelves behind the desk. Interact with it to step through and end the quest.
Tips and Notes
All four preceding quests are required before this one unlocks: Mysterious Man, True Wisdom in Kindness, Actions Speak Louder than Words, and Heart Beyond Borders. If Mystical Key hasn't appeared yet, check that all four are completed.