Oman Au Shrine is a Shrine from The Legend of Zelda: Breath of the Wild. It is located on the Great Plateau. The Sheikah Monk Oman Au offers the "Magnesis Trial" for a Spirit Orb and the Magnesis Rune ability for Link's Sheikah Slate. This Shrine, as well as the other three Shrines of the Great Plateau, must be completed before Link can obtain the Paraglider from the Old Man to be allowed to leave the Great Plateau. A Traveler's Bow can be found in a Treasure Chest.
The Shrine's trial is the "Magnesis Trial". Link will unlock the Magnesis Rune on his Sheikah Slate from a Guidance Stone in the Shrine. Like the other Shrines on the Great Plateau, the trial must be completed using the newly unlocked rune. Upon completion, the Sheikah Monk Oman Au will reward Link with a Spirit Orb.