Darth Exitium's lightsaber

This single bladed black lightsaber belongs to the Undead Sith Sorcerer Darth Exitium. Arch rival of Darth Mortem and the Lord Vitiate. Lord Exitium used the power of the void to in-power his lightsaber. It is considered to be a collector's item for future generations of Sith. Unfortunately, due to the fact it is infused with the void effects every Sith who came and used it was consumed by it's power. In some ways, it is a living lightsaber devouring the life of those who try to take it.