The last piece of Sevantais' previous life as a proud Aztec Elite warrior, his Obsidian Knife, used to kill and capture enemies of the empire for Sacrfice, it has also been used for sacrifices, hence it name, which means the sharper then scalpel blade has been used to cut the still beating heart out of captured enemies, it is the only stone age weapon Sevantai still carries. Its handle is made from the bone of one if his fallen enemies.