Surprise periodic checks

[evileeyore]

Originally Posted by trooper6

Also, if as a GM, you plan on having campers and people spending the night with all their gear make these rolls or suffer damage, then just tell your players ahead of time so they know to get the skill, and then it is no gotcha.

This is basically it. I make a "Must Have" list of skills that I hand out to the Players before chargen so they know what to expect and what the penalties for skipping those skills are.