Didn't try cloning yet, but one Enner Beast is hilarious enough. It took me some tries to get my unconscious 3 HP limbless friend to do what I wanted him to, but it worked in the end - throwing a banana peel at the guy pissed him off, and when he woke up, he was screaming at the top of his lungs.
And nobody cares. The "betrayed" team is neither considered your ally, or the city's enemy.
Basically, you have a limbless crawling Enner Beast killing off most of the population and nobody gives a damn. It's not as practical as it may sound, because unless you plan to kill off the whole city then, you still can't take any of the items, and Petrus and some of his more powerful friends are mostly unhurt.
Still, it's pretty hilarious (and well do-able outside of WM!):
Oh, and by the way, my character died killed by a frog's magic in the dark level. Is there any way to protect yourself from teleporting away your stuff? Grrrrrr.
Edit: You can clone corpses and resurrect several Enners. However, as someone once noted and tested, they kill each other with their screams. Still, if you carried the corpses far away from one another to various parts of the map, it may work...
(next logical step: try killing named baddies using Enner spawning... Elpuri+Enner on one level?)
Wizard mode, but still cool, no?