I found out a Sorcerer can frighten the Gnol and he gives you the seal piece. But don't try to fight him. He has a hidden HUGE axe, and of course you lose.
Went to Hummel's north location and tried to use float to get across the area where the bridge was out. Roehm declined the attempt. So I thought what if his magic was at least 200, so I managed that. Had him to make the attempt again and he promptly fell to his death.
A Sorcerer can break into houses and get loot. It can be traded to the guy standing by the store fronts.