This small organism is able to perfectly mimic a valuable item of a few pounds in weight. This item when placed in a dark, enclosed place assumes it's motile form and begins feeding. Looking like a tarry, black mess, the motile form will digest everything non-metallic in a backpack in one turn, everything else in two turns (Magic items may prove indigestible). After consuming everything in its enclosed space the false fortune will return to the shape of the item it had when found.
It will not attack, but if it encounters a living creature where it is feeding, it's digestive acids will do 1d6 damage a round.
Armor Class: 8 
Hit Dice: 1d4
Attacks: Attack (1d6)
Challenge Level/XP: A/5