Spectral ears

Spectral ears was an alteration/necromancy spell that allowed the caster to gain an auditory link with an undead creature within a specified distance.

Effects
Upon casting the spell, the caster could hear any any sounds surrounding a target skeleton or zombie, as if they were standing in its place. It also allowed them to command that creature, with verbal orders up to four words in length.

If the creature left the range of spectral ears, a distance of 30' (9.1 m) or more, the connection was immediately lost. If the caster targeted an undead creature that was under the control of another being, any commands were completely disregarded.

Casting
This spell required verbal and somatic casting components, as well as the material component of a mummified ear.