Travel to Blackrock Mountain and use the Extra-Dimensional Ghost Revealer to find Bodley near Blackrock Spire.
The medallion contained Valthalak's soul? It's no surprise it was guarded by such a powerful curse.
Locating Bodley presents a bit of a problem. Last time I heard of him, he was preparing to venture back into Blackrock Spire. He was never heard of again.
Seek him out in Blackrock Mountain, though I'm afraid to say he's probably dead by now. I suggest taking the goblin's device with you, friend.
