This is a heavy, well-used sledgehammer. You picked it up during a tale you call:
Master of Destruction
It all started with a request by Arachnos Operative Wellman to prevent a Wyvern interception of an arms shipment to Paragon City. Travelling to the cargo ship, you repelled the Wyvern attack, allowing the shipment to get to the mainland.
The next step was to put a serious damper on the Boomtown reconstruction efforts. Travelling to Paragon City, you destroyed all the supplies in a reconstruction project causing a serious resource drain.
Finally, it was time to put a hurt on the Paragon's pride - it's heroes. you travelled to Paragon City and destroyed a number of statues belonging to prominent heroes.