Unnatural Persistence
From Drunkapedia
Quest spell obtained from Gredaline Consulate along with Dark Flame and Arcane Restoration.
Obtained from various Virindi in the form of Obsidian Shards in the Gredaline Consulate. Diyas al-Yat in Zaikhal translates the shards and scrolls found on the Virindi, giving these spells in return.