You must kill Svarnos in the D-Block and return with his Cursed Collar. Svarnos can be found in the D-Block, just northwest of Baradin Hold.
Excellent work on the island capture, <class>. Now that we have claimed the island, we need to make these cellblocks useable for prisoners. D-Block has been especially hard to clear out. Unfortunately it has become overrun with demons of all sorts.
We have been able to thin out the demons but a large core hound has broken its way out of its cell and is wreaking havoc down there. I need you to kill him and bring back his collar.