Cadaver Collector

Cadaver Collectors are Constructs from Razhuthok, the Realm of Eternal War. They roam the battlefield collecting the bodies of victims, capturing their dying essence and using it to fuel their own awful powers. These spirits remain trapped until consumed or expelled to fight on behalf of the collector.
At times, a powerful Wizard learns to summon these awful metal things. When they do, the Cadaver Collector roams the plains trying to make its way back to Razhuthok, collecting essences on the way.