The Mushroom Crown is an Armor piece found in Elden Ring, and is part of the Mushroom Armor Set, which contains Mushroom Crown, Mushroom Head, Mushroom Body, Mushroom Arms, and Mushroom Legs.

"Crown of Azur, primeval current sorcerer, set with a prominent blue-green glintstone. This crown replaced Azur's brain and skull altogether, and now, removed from his body, it is all but dead. What ...

The Leather Crown can be found in a small forest north of Moorth Ruins and east of the Church of the Crusade. Check out the map below for the exact location.