Sea Witch’s Amulet
At the end of every 24 hours, the amulet expends 1 charge per voice stored inside of it. When the amulet has no charges to expend, the stolen voice is released and returns to the target. You can use a bonus action to release a voice stored in the amulet. When the amulet has no voices stored in it and is soaked in sea water for 24 hours, it regains 1 charge.
Destroying the amulet releases any stolen voices stored inside and creates a brief piercing shriek in a 100-foot radius. Each creature in the area must make a DC 10 Constitution _saving throw_ or be _stunned_ until the start of its next turn.