uncommon auditory enchantment mental 

Traditions arcane

Cast [>] verbal

Range 30 feet; Targets 1 creature

Duration varies

You stun the target with an arcane word of power. Once targeted, the target is then temporarily immune for 10 minutes. The effect of the spell depends on the target's level.

13th or Lower The target is stunned for 1d6 rounds.

14th–15th The target is stunned for 1 round.

16th or Higher The target is stunned 1.

Heightened (+1) The levels at which each outcome applies increase by 2.

Core Rulebook, page 359.