Eye of Rubiss
The Eye of Rubiss, originally localized as Rubiss Charm, is a key item in Dragon Quest II.
Location
The sacred artifact is acquired from the goddess Rubiss at the Rubiss Shrine. In order to receive the heroes must have gathered all 5 Sigils from around the world.
Usage
The Eye of Rubiss is used to reveal the true interior of Hargon's Castle. Without it, the heroes only see an illusion of Midenhall Castle. The heroes must use it each time they enter the castle.