Crystal of Demonic Blood

This is the object in which the incorporeal "Demonic Blood" dwelling inside Demons was sealed and made tangible by an able sorcerer. Although it has properties similar to magical powers, such as strengthening arms and body or recovery from injury and fatigue, the scholars say that "Demonic Blood" acts on the mental, while magic acts directly on the matter. Therefore, they say it is particularly effective on the enhancement of legendary armor protected by the Spirits, or swords inhabited by the swordsmith's soul.