conjuration 

Traditions arcane, occult

Cast [>>>] material, somatic, verbal

Range 60 feet

Duration sustained

You summon an unseen servant, which you can command as part of Sustaining the Spell. It serves you until its Hit Points are reduced to 0, at which point the spell ends, or until you stop Sustaining the Spell. The unseen servant gains the summoned trait.

Core Rulebook, page 380.