A clean convex mirror that can be used to detect the appearance of Boss Monsters exists in the map. If the Boss Monster exists, its location will be indicated on the mini map during the active duration of this item.
The effect has a 10 minute duration, the effect is cancelled once the player leaves the map or logs out.
Lord of the Dead, boss monsters in the Bio Lab, Ktullanux, Memory of Thanatos and some other event MVP monsters can not be detected by using this item.