Mangar's Tower  

Spoilers, Level 4

There is a Vampire Lord in the coffin. If you don't feel up to killing one, then my advice would be to not open it. 
The sleeping Dragons will stay sleeping if you play music. 
The magic mouth gives you a "Thor Figurine" if you answer THOR to its question. 
The magic square at 20n/3e will change all of the walls into doors and vice versa. 

1 Welcome to Mangar's Crypt 
2 The shape of a skull is etched on the floor. 
3 A gust of wind blows through here... 
4 Tracks lead south down this corridor. 
D Two sleeping Red Dragons. 
M Magic Mouth 
C Coffin 
