Description
The Crystal Eye is a nonmagical 1-inch-diameter eyeball made of incandescent orange crystal. Despite being nonmagical, it serves as one of ten keys needed to open the vault of the beholder in area 44 of the Tomb of the Nine Gods.
Location
The Crystal Eye is found in area 33 (Chamber of Opposition) on Level 3: Vault of Reflection. It appears at the bottom of a magical font after a shadow duplicate drinks all the illusory soup from the font.
Acquisition
To obtain the Crystal Eye, characters must solve the chamber’s puzzle: their shadow duplicates must drink all the illusory soup from the font. Once this is accomplished, the crystal eye materializes at the bottom and can be easily removed.
If the eye is removed and later placed back in the font, it disappears and resets the illusory soup effect, allowing the puzzle to be solved again.
Purpose
The Crystal Eye is one of ten keys required to access the vault of the beholder (area 44), which is located on the same level of the tomb. Collecting all ten keys is necessary to progress through this section of the dungeon.