Demand for the Silmarils

After the Robbing of Formenos, Morgoth and Ungoliant fled from Valinor to Middle Earth. Ungoliant grew lustful and hungered for the gems carried by Morgoth and demanded them. Morgoth continuously fed her the gems of Feanor but stopped when she demanded the Silmarils. In a rage she tied Morgoth to her webs and he cried out for help.

Morgoth had placed much of his power into Arda and was not the same. He called upon his Seven Balrog Chiefs to help him drive Ungoliant away. The Seven answered his call and together they drove Ungoliant out of Lammoth.

Morgoth would later regain some of his lost power by creating the magical Iron Crown with the Silmarils placed in it.