Symphony of the Cosmos

You perform a symphony that taps into the power of the cosmos, unleashing a devastating wave of energy that obliterates your enemies. Each creature within range must make a Dexterity saving throw. A creature takes 10d10 force damage on a failed save, or half as much damage on a successful one. In addition, any creature that fails its saving throw is knocked prone. This spell ignores cover and can affect creatures in other planes of existence, but creatures with total cover are unaffected.