Invisible Stalker (spell)

Invisible Stalker is a conjuration level 6 spell that conjures an invisible stalker to the caster's aid.

This spell summons an invisible stalker from the elemental plane of Air. This 8 hit dice monster obeys and serves the spellcaster in performing whatever tasks are set before it, even if this means being sent to certain death. The creature remains under the casters control for 9 hours or until it is killed -- at which point it will return to its native plane, only slightly annoyed at having to serve a mortal.