Confused for a certain part...

I personally have yet to see any "Mangled Dungeon Passes" (exact name), and all the handicrafting recipes for passes clearly have "Mangled [Dungeon name] Dungeon Pass" as a crafting requirement. And, mangled passes for hard mode advanced dungeons drop from advanced mode dungeons, otherwise it would probably be impossible to get into hard mode advance dungeons to begin with.

AH, DONT TELL ME A SOLD A RARE MANGLED PASS FOR CHEAP!!!

but honestly, mines didnt have a dungeon name with the pass....or its possible I didnt look correctly since I do remember I was only able to craft Rabbie, Mirror and Phantasm.

I just got one today, it's clearly named [Mangled Rabbie Dungeon Pass].