Dragon?s lair 
To open the Dragon?s lair organize a party with members that are all at least level 14. 

Immortal Characters 
To create immortal characters (no aging): 
1. Create a character and age him/her until the first year they turn ''old''. Fighter/Wiz=60, Dwarf=100, Elf=200. 
2. Take the character out to battle and have him/her die. 
3. Let the character remain dead for 20 years. 
4. Take them to town and have the magician revive them. There should only be 10% chance. If it's not 10% you may have done something incorrectly. 
5. If the resurrect is successful, you should now have an immortal character. Just use rejuvenate to get them to the desired age.