Call undead

Call undead was a necromantic spell that allowed the caster to summon any nearby undead creature.

Effects
The caster was able to summon any undead within 100 yards (91 meters) in any direction, including above and below. Summoned undead outside of visual range of the caster were not able to automatically locate the caster.

Lesser undead within visual range would immediately move to the caster. Greater undead were not compelled by this spell.

The spell was effective through all non-magical barriers. It could not penetrate magical barriers, nor be used from one plane to another. The spell could be used to bring back any previously turned undead.

Components
In addition to verbal and somatic components, this spell required a piece of bone from any creature as a material component.