What is that door in that foggy area in the haunted cave, its by lord nightshade... I have passed into mushu but i STILL dont know what that doors for.... Anyone got any ideas? :-o
Ok I am a death student so I can give you the information about this quest, if you don't want spoilers about the quest stop reading this comment.
The quest is that Dwygrn (hope I spelled that right) tells you to capture a oni, then bring it to the Haunted Cave to this area. Then you throw the bottle on the ground and a wraith appears, saying that you have its respect or something like that.
Return to Dwygrn and he gives you Empower, that gives you three pips at the cost of 500 death damage dealt to you.