The banshee scream caused all the hunters who didn't cover their ears in time to partially lose their hearing. Blood dripped through their ears and although no one was directly attacked, some of the hunters were completely disabled and couldn't move anymore. They couldn't tell what was wrong with their bodies, but they couldn't so much as stand up or walk without tripping.
According to the medics who studied their symptoms it was due to their middle ear being destroyed, but Luna suspected it wasn't so simple. It wasn't jut the vibration of the sound what caused the damage, but the flux that empowered the scream. As usual, her suspicions were confirmed when after the banshee vanished all the hunters affected by this strange condition suddenly became healthy again.
Luna noted this and added those details to her research which had gotten a long way from a hundred pages of 'maybes' to a healthy bestiary with specific descriptions of cryptids and their confirmed abilities.
