Some people are terrible liars. No matter the size of the falsehood, their manner and tone will infallibly expose them as the fraud they are. Malthis of Woodsman’s Dell was one of these people - until his brilliant mind concieved a solution…
Deep within the bowels of the perilous labyrinth, the fearless heroes come upon a grand, ornate chest. Eager for more plunder to line their pockets with, they heave up the lid - to find nothing. A red herring? Maybe not.
A certain country allows most civilians to carry weapons, but only if they are potentially deadly. Pepper sprays, stun guns/tasers, batons, and dart guns are banned. And if you kill someone and are not acquitted at trial, the punishment is to be hanged the day after you were found guilty. The message here is that if you want to go armed, you had better be prepared to risk killing someone and being executed unless it was clearly self defense.
When it comes to combat spells, again, only the highly dangerous can legally be cast with the same possible consequences if cast wrongly.