Robustium Steel

Robustium Steel is a type of metal that was once forged in the heart of the Forbidden Forest through Dolkeri magic. After the Red Night, King Gerald Lannister claimed the metal as his own and stowed all reserves in a lost keep.

Robustium Steel is recognizable by its tremendous strength and dark coloring. The metal is considered to be more valuable than gold because of its negative-magical properties that allow it to absorb magic.

Known Robustium Steel Items
White Keep, the home to the Royal Family, was built with stone, outlined in a thin coat of Robustium, and outlined in ice. The Robustium prevents the snow from being burned by elemental fire. Because the entity of the castle is outlined in robustium, it's impossible for magic to be preformed by all creatures and humans.

Seed Mask, members of Seed wear a mask made out of Robustium