“ A group of wizards who will give others temporary magical powers, but the price is high and those who can't pay or won't pay get very badly hurt or even killed.”
“ 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.”
“ Societies of beings who in some way reflect the dogmatic, superstitious, religious, idiotic, political, etc. views of large (or small) groups of people in real life.”