Blare of the Archon

You summon a glowing, magical horn which you blow to unleash a defeaning blast. All creatures in a 60-foot cone in a direction you choose, must make a Constitution saving throw. A creature that fails its saving throw takes 9d6 thunder damage, is pushed 10 feet away from the caster and is deafened for 1d4 rounds. A creature that succeeds on the saving throw takes half damage and isn't pushed back or deafened.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the thunder damage increases by 1d6 for each spell slot level above 5th.