Dargoth's Tower Level V - Spoilers
The magic mouth at 12n/9e needs the 'ten' to teleport you to the snare. The ten are: WATER, LIE, GOLD, SLAVE, HATE, ROOSTER, LARGE, EARLY, BARD, WOMEN. 
The 'Battlecry' is HAVOK. I seem to remember there being a clue about the dungeon that says: 'Cry Havok, and let slip the gods of war.' but I can't find it and can't really be bothered to look right now. :-) 

Dargoth's Tower Level V - The Death Snare
Make sure everyone in the party has an empty slot in his inventory. Go to the Stone Man and give him the battlecry. Then go to 5n/18e to open the magic door. 
