These kettle drums are unremarkable in appearance. 

If both of the pair are sounded, all creatures within 12", save for a "safe zone" of 2" radius from the drums, must make their saving throw versus magic or turn and move directly away from the sound for 1 full turn. Each turn thereafter, the panicked creatures may attempt to save versus magic again. 

Each failure brings another turn of movement away from the drums of panic. Movement is at fastest possible speed while fleeing in panic, and 3 rounds of rest are required for each 1 turn of fast movement after the saving throw is made. 

Creatures with Intelligence of 2 make saving throws at -2, those with 1 or less save at -4. Each drum is a hemisphere of about 1½-ft diameter.