Thunderous Strike
You swing your massive weapon, creating a wave of sonic vibrations that topples creatures. Make a melee Strike with your two-handed weapon. Each creature in a 15-foot cone from you must attempt a basic Fortitude save against your spell DC or take 2 sonic damage. On a critical failure, the creature is knocked Prone. The target of your Strike must be within the cone or the effect fails.
Heightened (+1) The damage increases by 1.
Traits
An action with this trait requires a degree of mental concentration and discipline.
Focus spells are a special type of spell attained directly from a branch of study, from a deity, or from another specific source. You can learn focus spells only through special class features or feats, rather than choosing them from a spell list. Furthermore, you cast focus spells using a special pool of Focus Points—you can't prepare a focus spell in a spell slot or use your spell slots to cast focus spells; similarly, you can't spend your Focus Points to cast spells that aren't focus spells.
This indicates abilities from the magus class.
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.