User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-4563270-20121018041927/@comment-4212769-20121018133758

The unleashed skill of the Zinogre armor (weapons don't have skills, you should know that...) activates when you are in the same area as the/a big monster a certain time long. The time it needs to activate decreases every time the hunter gets hit.