You gain a +1 bonus to attack and damage rolls made with this magic weapon. Attacks made with the weapon also deal 1d6 bonus thunder damage that is maximized against constructs, objects, and earth elementals.

When you hit a target with an attack using this weapon, you can speak the hammer's command word. The attack deals 3d10 bonus thunder damage, and the target must succeed on a DC 15 Constitution saving throw or be stunned until the start of your next turn. This thunder damage is maximized against constructs, objects, and earth elementals. Once it has been activated, the hammer can't be used in this way again until the next dawn.

Proficiency with a Warhammer allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Bonus: Magic, Damage: Thunder, Damage: Thunder, Stunned, Damage, Combat, Versatile, Push