Nameless Spirit:
Good job... Now to write down the spell...
....Light turns darkness away, and shines upon the hidden door. All obstacles will disappear and the path to truth will become clear...
Alright, it's done. Now, you and your friends go and meet the Imperial Tomb Guide near the entrance of the Imperial Tomb. He'll take you to Frintezza...
(Make sure the Command Channel Leader has Frintezza's Magic Force Field Removal Scroll when you meet the Imperial Tomb Guide.)