Abyssal Whisper Amulet

This amulet is fashioned from a dark, shimmering gemstone set in a silver filigree. While wearing the Abyssal Whisper Amulet, you gain the ability to cast the spell 'Speak with Dead' once per long rest without expending a spell slot. Additionally, when you succeed on a Charisma (Persuasion) check against an undead creature, roll a d4 and add it to the total. When wearing the amulet, you have advantage on saving throws against being frightened by undead creatures. However, if you are reduced to 0 hit points, the amulet's magic is depleted until you finish a long rest.