Befriend Undead

You speak in a terrible chatter that can only be understood by the undead, attempting to magically enthrall an undead within five feet of you. If the target can see or hear you, it must succeed on a Wisdom saving throw against your spell save DC or be charmed by you for 24 hours. If you or one of your companions harms the target, the spell ends. You can't use this feature on that creature again until you finish a long rest.