While you wear this helm and are inside Maddgoth's castle, on its roof, or in its courtyard, you have immunity to all damage. If the helm is taken from the castle, it turns to dust and is destroyed.
While you wear this helm and are inside Maddgoth's castle, on its roof, or in its courtyard, you have immunity to all damage. If the helm is taken from the castle, it turns to dust and is destroyed.
WDMM, p. 103