Theory of the Unbound
From Guild Wars 2 Wiki
— In-game description
- Talking to Kelvei, the Legendary Observer after completing Ad Infinitum II: Upper Bound.
- The item can be acquired only if the Ad Infinitum III: Unbound collection hasn't been unlocked and if the item is not in inventory.
- Multiple copies can be obtained.
- You must double-click (consume) it in order to unlock the collection.