Key of Agartha

The Key of Agartha is Lux's Legendary reward for clearing the Sacred Dungeon's Flower of Death quest. It grants controlled travel to the hidden Kingdom of Agartha and contains a small fragment of the Core of Elysium.

History

Sacred Dungeon reward

Lux receives the key alongside Agarthan reputation after completing the Sacred Dungeon quest. The key is immediately identified as soulbound, but its destination initially puzzles him because Agartha is absent from the ordinary geography he learned from Vera. Its description also delays practical use until Lux reaches Initiate Rank, making the reward a promise of later access rather than an instant escape from his current circumstances. (Chapter 297)

Opening the way to Agartha

Lux eventually activates the key from his mountain home and transports himself, Eiko, and Gaap to Agartha. When King Septimius later orders him to display it, the artifact repels the King's attempted touch with red lightning before returning to Lux. Septimius's examination identifies both its soulbound nature and the small piece of Elysium's Core within it, explaining why even Agartha's ruler treats the key as unusually powerful. (Chapters 829, 834–835)

Abilities and properties

• Once per week, instantly teleports its user to the Kingdom of Agartha. It cannot be activated until the owner reaches Initiate Rank. (Chapter 297)
• A second activation can return the traveler to the place of departure at any time, separating the return function from the weekly outward journey. (Chapter 297)
• Can transport companions alongside Lux, as demonstrated by Eiko and Gaap's arrival with him. The text does not establish a maximum passenger count. (Chapter 829)
• Is soulbound to Lux and resists another person's touch with red lightning; it also contains a small fragment of the Core of Elysium. (Chapters 834–835)

Ownership and custody