Flash Paper Trap CR 4
Type mechanical; Perception DC 22; Disable Device DC 21
Trigger touch; Reset none
Effect 3d6 fire damage and blinded for 1d4+1 rounds (DC 19 Reflex save for half damage and negate blindness); multiple targets (all targets in a 10-ft.-radius)
When a PC touches an item protected by the flash paper trap (in this case, a ledger), every piece of paper in the room spontaneously combusts in a huge flash of fire and light, including the wallpaper. All books, scrolls, journals, and the laker that were in the room are also destroyed.
It’s important to keep records of your activities, even criminal or underhanded ones. However, steps must be taken to insure that these records don’t fall into the wrong hands. The flash paper trap is employed by smugglers and bookkeepers alike to destroy their sensitive records rather than have them fall into the wrong hands.