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.