Description
The Black Dragons are the elite troops of Aquilonia, charged with guarding the Royal family of Aquilonia until death. They are well respected throughout Tarantia and the realm, and the king sends them to serve his justice to bandits and other outlaws.
With such a towering reputation, only the best of recruits and the most valuable equipment are ever used to outfit the troops.
This pike was forged by a master smith in Aquilonia itself - and simply holding it instils a sense of pride and ownership that increases the stamina.
Source
The Black Dragon Pike can be found in 
Legendary Chests.
Repair
This item can be repaired with a Legendary Weapon Repair Kit.