Looming Gavel

Source
This item is a world drop from level 28-34 monsters.

Background
When carried, this weapon appears to be an ordinary judge's gavel carved out of wood. In this state, it is only about a foot long, weighing no more than a mere pound. On command, the looming gavel grows into an ironbound warhammer with a distinctive scale of judgement symbol emblazoned upon its side. Although it is no larger than an ordinary warhammer in this state, it appears much bigger to opponents, so that it appears to loom overhead when striking.