D&D Playtester for WoTC since 2012
I want to drop a cryptex in my campaign, for those who ignore what it is, it's a portable vault used to hide secret messages, scroll etc. I'm not too sure on the method to open it. A Skill challenge seems like a natural fit, a serie of Intelligence (Investigation) checks where success unlock it and failure breaks the vial of vinegar and destoy the content? Or may be Thievery, since it's normally used for open lock? A mix of both? How would you go about it?