Jace's Hammer of Vigilance

Jace's Hammer of Vigilance is a Legendary mace in Diablo III. It requires character level 31 to drop.

It is specifically designed for Blessed Hammer Crusaders. The special affix is more valuable than it might seem: each hammer has double size, and can hit more enemies with it, making targets much less likely to avoid a flying hammer. It also increases chances that the same enemy will be hit again by the hammer as it spins further.

It is also the only weapon that can roll increased damage for this skill.

Trivia

 * The hammer's name and description are a likely reference to the 1985 animated show Jayce and the Wheeled Warriors.