[Peter / Dorian]
You'd be surprised. I was about to bother the witches from this vampire television show, but I prefer the sound of what you have to offer. As for the witch who created the portal, she's vanished.
There's not a rush, per se. The non-magical healers here estimated he's got over a year left. Cancer, don't know if you've got that in your world or not. I'm still willing to have a crack at it but it's not my expertise, either.