“ Believable magic, like ordinary physicis, operates according to some invariable laws that always result in some kind of cost or 'bounce back'. The grater the magic, the more it should cost the character physically, emotionally, and spiritually.”
“ A massive trebuchet constructed by the reigning tyrant, it can hurl the heaviest loads of any trebuchet to date and is the most destructive, non-magical weapon currently in existance. The Thought of Warwolf setting up on their lawn has quelled many a rebellion.”
“ Faerie foods with unusual effects. Like faerie sausages that turn the eaters into wiener dogs, faerie wines that make the drinker whiny, etc. There's a table in Palladium Fantasy RPG which has a table of ideas.”