According to older topics I've read, the Enner has to be friendly to the town, or else it'll be killed easily. So the only way to have a resurrected Enner in the town this way, according to what I've seen, is to have a kamikaze dwarf in the cathedral attack you, explode a wand of resurrection near you and have the exploding wand resurrect the Enner. If the Enner is friendly to you, you will be attacked, so you can't keep the town friendly either way. In addition, Petrus will take a very long time to die from the Enner screams, and that only if he is very close (else he won't even get hurt).
If I wanted to sci-talk massively, what I'd do is get friendly with the evil gods. Nefas can summon you mistresses every three hours, who can get you up to 20 wisdom. After that, you can chat with angels, who are pretty fast. Note that I haven't done any of this, except for the chatting with angels part (and that only because I got lucky enough with cerumen and holy bananas to get my wisdom up that high in one game), so someone else might have to confirm whether this works.