Azrei Island is part of Faeruns largest island complex, which has no name, concealed inside another layer of reality called the forbidden triangle. The triangular portal flips the sea when you enter its space. Like in Pirates of the Caribbean. The Island complex is a small fracture of another world, stuck in this one. The reason behind this phenomenon is a mysterious Man. He purposely created this merge between worlds with the help of a time crystal. Because his powers cannot last forever outside Faerun, his illusion of the captain that is taking the players toward the portal disappears in the middle of the journey.