Amulet of Undead Control

This amulet has a cord of silver and an encrusted black onyx in the shape of an Snake Eating itself with a Gleaming Gem in the shape of a skull. The Skull Gem glows the colour of the wielders magic or mana.

Control Undead. As an action, you can target one undead creature you can see within 30 feet of you. The target must make a Wisdom Saving Throw against your spell save DC. On a failed save, the target must obey your verbal commands for the next 24 hours, or until you use an action to end the spell.

An undead whose challenge rating is equal to or greater than half of your level is immune to this effect.