I was in Ardhunqol, just killed the boss, and walked one level back up to see if there were any respawns to help level. I was surrounded by lots of bad things. I used the amulet that "destroys lots of stuff, including walls" and BAM crash to desktop. Not the simple LUA crash, this was like a memory overrun crash, perhaps too much damage and destruction recursion

I don't remember the amulet's name (I had to take a long walk to cool down after the game crashed

Don't worry, the game saved a few levels above. Lost a bit of time, but nothing too dramatic. The main reason I don't remember the name of the amulet is my last save happened before I got it. Coincidence? Maybe not

[EDIT: Funny, my save game was right before I picked up the amulet, and I just found it again. The name of the amulet is Spellblaze Echoes.]