Now that you have seen the massive Ogran of the Ar'azi, I'll tell you what the mission is. The Savants believe they may be able to form wards and anti-spells against the Swo'gar Ogran if they have a few samples of their spiritual symbols. This will allow them to analyze their specific magical nature and theoretically lead to a constructed counter-spell. Seek out the altars they use for worship and recover some of their idols.