“ A magical stave with two distinct uses. One end is a healing stick, which can heal some quite serious diseases, the other half can be used to inflict those diseases on other people.”
“ A small, primitive village has yet to discover fire, which is a good thing because there are highly flammable (but not otherwise dangerous) gasses in the air. The heroes, blissful in their ignorance, don't know that and think it a wonderful idea to show the locals open flame.”