"The memory of the goddess of creation is the key to open the prison gate?" Even a person as steady as Y'zaks could not hide his astonishment. "So she 'deleted' her memory to permanently lock the prison?"
"Yes, exactly." Asurmen's voice was as flat as ever. "It was a last resort. You probably can't imagine how powerful and weird the Mad Lord is. In fact, it's almost impossible to completely eliminate it. The Mad Lord represents the origin of the universe and is the initial data of everything. It would be impossible to destroy the Mad Lord without also destroying the universe. So the goddess of creation could only strip its power and seal it permanently."
Lily impatiently asked, "Why would she want to leave a key in the first place when she knew she would go through all the trouble to delete it?"