You sing a funereal dirge to force restless spirits to fully manifest in the Material Plane. Each incorporeal creature in the area takes 4d10 sonic damage (this damage bypasses its resistances) depending on the result of its Will save.
Critical Success The creature is unaffected.
Success The creature takes half damage.
Failure The creature takes full damage and becomes semi-corporeal until the spell ends. All attacks against it get the benefit of a ghost touch rune.
Critical Failure As failure, but double damage.
Heightened (+1) The damage increases by 1d10.
Traits
An action with this trait requires a degree of mental concentration and discipline.
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.
An effect with the sonic trait functions only if it makes sound, meaning it has no effect in an area of silence or in a vacuum. This is different from an auditory spell, which is effective only if the target can hear it. A sonic effect might deal sonic damage.