You summon an astral form of wings on your arms and slam them together, creating a wave of force damage that extends out in a 40 foot cone. Every creature in the cone must make a strength saving throw or take 5d6 force damage and be knocked prone. On a successful save, the creature takes half damage and is not knocked prone.

At Higher Levels. When you cast this spell using a 4th level or higher spell slot, the force damage increases by 1d6 per 2 spell slots above 3rd.