A small, silver whistle that trails luminous whisps when blown.
You can blow the whistle as an action, producing an unearthly shriek. This shriek has no effect on constructs and undead. All creatures within 30 feet, including yourself, that can hear it must make a DC 13 Constitution saving throw. On a failure, a creature drops to 0 hit points. On a success, a creature takes 10 (3d6) psychic damage.

The whistle can be used ten times. After the tenth time, it cracks and becomes useless.

Notes: Damage, Consumable