Summary: According to Azrael’s Commentary, Xandellum is a special alloy that is
“the hardest, toughest and most resilient material ever conceived by the mind of
God” (AZC — House of Shevas). Within the temple complex of the House of Shevas, there
is an exquisitely constructed vault which contains a special room called “The Keep
of the Seven Mysteries”. The door to this special room is made of Xandellum.