Maul of the Marauding Ettin

This two-headed war maul is crafted from a single enormous piece of dark stone, with a twisted handle and jagged edges. It grants a +1 bonus to attack and damage rolls made with it. After hitting a target, the wielder can choose to make a single additional attack against another creature within 5 feet of the original target without expending an action. However, this secondary attack has disadvantage due to the awkwardness of swinging such a large weapon. Additionally, once per short rest, the wielder can unleash a thunderous roar as a bonus action, forcing all creatures within 10 feet to make a DC 13 Wisdom saving throw or be frightened until the end of their next turn.