What are all the common skill checks or saving throw rolls that the GM makes in secret for the party? I would like list of all the secret rolls that the GM makes, that the party does not even know they are taking.
I know that passive spot checks can be rolled by either the GM or the players, but if the GM calls out, "make a spot check," the party will know something's up even if they roll low.
As an example:
Jordan Bane the Fighter steps into a room. To his left is a crossbow trap mounted on the wall, ready to fire if he trips the trip wire at his feet. The GM asks Jordan Bane's player to make a spot check; he rolls a 2 and gets a total of 3 after bonuses for his check. The player rolls his eyes and tells rest of party, "Hey guys, I am not going any further. Maybe the rogue should check this way, now."
Total meta-game but could have been avoided if the GM simply rolled the spot check behind the GM screen and said "P-twang! a steel bolt flies through the air and strikes Jordan Bane in the left shoulder as he enters the goblin kitchen!"
So what are all the checks the GM may make in secret?
I am aware that a similar question was asked in a previous post but it dose not provide a list of the all the checks that would or should be rolled by the GM to prevent Meta.