“ If you want to add a 'supernatural' touch to your campaign, define the rules of magic and the universe. Make your players comfortable with those rules. Then your new supernatural creatures must then break those rules.”
“ One of the PC's falls in love with a woman who happens to be a necromancer...perhaps she/he is allied with a group working against the PCs?”
“ A society or country has a unique method of correction. Criminals are imprisoned in a dungeon with two options: Serve their time, or try to escape. Those who manage to escape alive, their crimes are forgiven early.”