Instruments of Death: Masters of the Siege

In a Forged in Fire twist unlike anything we've ever done before, four teams of expert builders are tasked with making some of the largest and most notorious siege weapons ever seen on the battlefield. From war hammers to battering rams to ballistas, which team's weapons will be strong enough to take down the competition, earning them $20,000 and the first ever title of Forged in Fire: Instruments of Death champions?