Dorf’s Deafening Aura

You emit an aura of thunderous power out to a radius of 15 feet for the duration. This aura grants you and creatures of your choice within it resistance to thunder damage.

On tour turn, you can use a bonus action to force a creature in the aura to make a Constitution saving throw. On a failed save, the creature takes 3d8 thunder damage and is deafened until the end of its next turn. On a successful save, the creature takes half as much damage and is not deafened. When a creature takes damage from this spell, you can use a reaction to give yourself temporary hit points equal to the damage dealt.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the radius of the aura increases by 5 ft for each level above 5th.