Ironbound

Ironbound is a monster found in the expansion Shadow of Nerekhall.

Description
Although they appear as mere statues of metal, the ironbound of Nerekhall are in truth powerful magical constructs forged from black iron. They act as defenders of the city, detecting, absorbing, and dissipating malign magical energy. Lately, their behavior has become erratic, and the Chief Artificer, Rylan Olliven, assures those in the city that this is all quite normal and will soon be resolved.