Are your players running roughshod over your monsters and ransacking your dungeons? Are they disrespecting you as a Dungeon Keeper?
DungeonCo here to help, with the handy dandy Horn of Magic Power
The everful horn of a vengeful bull-like creature who wants it back…
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.