Player v. Character knowledge

[Mercule]

Thankfully they don't abuse that knowledge, but I like to throw them trolls with a vulnerability to sonic damage or variant lycanthrops with a vulnerability to gold once in a while.

I tried that once. Since the PCs were in a remote area, I made sure I included a gold sword somewhere on the premises. I described the castle library pretty non-challantly, including the golden sword along with the boar's heads, rare tomes, etc. The words were no more out of my mouth than one of the players said "Hey, I bet we need that sword to kill some sort of weird werewolf."

Grrr....

In retrospect, I should have changed the sword to bronze (upon closer inspection) and hidden the real version somewhere else.

 

[TuDogz]

I'll add my voice to the "use the MM as a compendium of general knowledge and let the encountered monsters vary from that chorus". My players have been at it for so long and since many of us switch off DMing the MM is well known by all. I don't expect people to make poor or dangerous decisions intentionally. I do still have one guy who complains when creatures have there abilities altered but he just makes me laugh.

 

[Mystery Man]

My players have been at it for so long and since many of us switch off DMing the MM is well known by all. I don't expect people to make poor or dangerous decisions intentionally.

I don't have a problem with using the knowledge gained from playing experience and knowing whats in the MM. It's pulling the book out and looking the monster up during the game that sets me off. I don't believe this will happen again though.

I do still have one guy who complains when creatures have there abilities altered but he just makes me laugh

It's all you can do really.