Finding another Soul Mask is starting to sound too implausible. Making a new one is a little more plausible, but it's still quite a stretch. Also, "not hereditary" is a stretch if your first "victim" is the child of the Hero of Oakvale. Jack never exhibited the ability to jump from body to body without a mask, so he'd likely die with the Hero of Oakvale.

Keep trying, you're doing much better than most of these guys!  

squidproquo:

You are a murdering machine, sir.

Gradius1:

No more Jack threads.