Quicken
First Post
I voted for option B before I read the full post. And now I think I should have voted A. The players do not get an outright warning. The GM never says "this guy seems so tough he'd kill you without breaking a sweat". However the GM may go to great lengths to describe obvious magical equipment, use of spellcraft (standing in the rain but bone dry) or best yet slaughter an NPC before the players can blink. Sometimes admittedly the clues are less obvious and one of the players inevitably say some smart arse comment and die horribly. Hopefully the rest of the party feel educated from the mistake of their companion