Which is confirmed to work up to at least seven times, with seven bodies on the same tile and seven ghosts around that tile. I didn't encounter it the 8th time because I deleted all bones .
If there is a random wilderness generated by > I think some tiles should be marked as 'containing a temple/dungeon', in the same way the other levels are marked. That way, you don't end up searching several levels of jungle before you find a dungeon.
The sword of chaos. A decent artifact weapon, but with a chance to explode/burn/acid/generally screw your oponent, and a chance it backfires and screws yourself. And chances of random effects, like the monster becomes friendly, or you get a random state, or you autopray to a random (known or unknown) god. I remember there being a curseblessed sword in a d&d campaign, and hell it was fun. "Shit! I'm backed into a corner by three greater demons! In a desperate attempt to save myself, I attack!" *rolls d100 = 50* "The demons sit down and invite you to debate the conflict. You convince them that you have done nothing wrong, and they depart"