Horn of Blasting

Emits a thunderous blast in a 30-foot cone that is audible 600 feet away. Each creature in the cone
must make a DC 15 Constitution saving throw.
On a failed save, a creature takes 5d6 thunder
damage and is Deafened for 1 minute. On a successful save, a creature takes half as much
and isn't Deafened. Creatures and Objects made of glass or Crystal have disadvantage on the saving
throw and
take 10d6 thunder damage instead of 5d6.