You cause the target creature's vocal chords to swell like those of a frog. The target must attempt a Fortitude save.
Critical Success The target is unaffected.
Success The target's voice becomes hoarse, and speaking becomes painful. Whenever it uses an action that has the auditory trait or attempts to Cast a Spell that doesn't have the subtle trait, it must succeed at a DC 5 flat or the action is lost. Once per round, the target can spend an Interact action to massage its throat, attempting a Fortitude save against your spell DC. On a success, the spell ends.
Failure As success, but using an action with the auditory trait also deals 2d10 mental damage to the target as the sound of its distorted voice grates on its ears.
Critical Failure As failure, but the damage for using an action with the auditory trait is doubled, and the target can't use an Interact action to attempt a Fortitude save to end the effect early.
Heightened (+1) The damage for using an action with the auditory trait increases by 1d10.
Traits
An action with this trait requires a degree of mental concentration and discipline.
A curse is an effect that places some long-term affliction on a creature. Curses are always magical and are typically the result of a spell or trap. Effects with this trait can be removed only by effects that specifically target curses.
You must physically manipulate an item or make gestures to use an action with this trait. Creatures without a suitable appendage can't perform actions with this trait. Manipulate actions often trigger reactions.
Effects that slightly alter a creature's form have the morph trait. Any Strikes specifically granted by a morph effect are magical. You can be affected by multiple morph spells at once, but if you morph the same body part more than once, the second morph effect attempts to counteract the first (in the same manner as two polymorph effects, described in that trait). Your morph effects might also end if you are polymorphed and the polymorph effect invalidates or overrides your morph effect. The GM determines which morph effects can be used together and which can't.