This device exactly resembles a chime of opening.

When it is struck all creatures within 6" are immediately struck with ravenous hunger. Characters will tear into their rations, ignoring everything else, and even dropping everything they are holding in order to eat.

Creatures without food immediately available will rush to where the chime of hunger sounded and attack any creatures there in order to kill and eat them. 

All creatures must eat for at least 1 round, but they are then entitled to a saving throw vs. magic on each successive round until such is made, i.e. hunger is satisfied. 

Note: It is recommended that the chime of hunger operate as one of opening for several rounds of use before its curse be put into operation.