Shrieking Medusa Head CR 4
Speed fly 40 ft. (perfect)
Melee bite +8 (1d4+4 plus petrifying bite)
Special Attacks scream
During Combat If there are multiple medusa heads present, on the first round of combat, one medusa heads screams while another bites the closest opponent. They alternate screaming to affect as many foes as possible while trying to turn foes to stone with their petrifying bites.
Morale Medusa heads fight until destroyed.
Once every 1d4 rounds, a shrieking medusa head can open its jaw and emit a bone-chilling scream. Each creature within 30 feet must make a DC 16 Will save or be shaken for 1d4 rounds. This is a sonic mind-affecting fear effect. Whether or not the save is successful, an affected creature is immune to the same head’s scream for 24 hours.
Pathfinder Adventure Path #44: Trial of the Beast. © 2011, Paizo Publishing, LLC; Author: Richard Pett.