Re: immortality. I was trying to think of a work-around that involves the dead man's chest being brought into the game with him, but there's no way Will would be carrying it around at his pull point. Given the options you recommend, it might still be too OP even under proper lock and key anyway. Unless the chest can magically be brought along with him despite him having no canon reason to be in possession of it, to spice things up, I can try option B. He'll just have to get creative to keep it safe.

Re: psychopomp. I don't anticipate hI'm even trying to use that ability here, but the "messing with the music" mechanic works fine by me.