King's Key

The King's Key is an item that "unseals the land" of the Isle of Ruins in.

Location and Uses
Doylan's burial chamber contains his spirit ready to give a gift, which is the King's Key. The Key is used on the Northwest section of the Isle in a large golden pedestal near Bremeur's tomb. Upon using the key the pedestal and the sea level will lower and reveal more of the land, enabling Link to search for Max.