“ is a lovely golden necklace that gradually transforms its wearer's skin into gold. Given enough time, this will prove fatal, but the wearer cannot remove the deadly jewelry without assistance. Some might be cruel and greedy enough to leave it on its victim...”
“ Another real world thing. White tea. Can only be picked two days a year, the two days before the flowers blossom. Could be a similiar plant that...is the deadliest poison known, cure known diseases or psychosis, or a potent herb that just tastes awesome.”
“ 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.”