Correction: Cornservant is only obtained after a series of unlinked quests. After hitting 100 and getting past Solution 9, you need to find the Cornservant NPC in each zone (including Tuli) and run the quest they have.
@@ThePhookas You're welcome! I didn't actually find it yet myself btw, but someone contributed the information to Gamerescape, a wiki I recommend checking for new stuff. :)