To Catch a Fallen Angel

Publisher's blurb:

A long time ago, the angel Hasdiel broke Ilmater’s orders and warned the town of Oakhill of an impending attack. Although he saved many lives, Hasdiel was punished for his disobedience. His consciousness was divided among three magical items and hidden away on Toril, Mount Celestia and Avernus, the first layer of Hell. Only the mortals he loved so much could free Hasdiel by using a magical portal to retrieve the items and return his consciousness to his petrified body. Once each year, on the anniversary of his fall does the portal open for a few hours. Will you be able to return with all three items before the time has passed?