"Books and scrolls are just as powerful as lightsabers."
About this creation
Darth Tremor was a Chagrian Sith Lord who served as Chief Lore-Master in ROvaniss' Sith Empire. Tremor was arguably one of the most intelligent Sith of his time and it was from this great knowledge that Tremor's power came. He studied Sith Sorcery extensively and was able to conjour Force powers that had not been seen for eons.
Tremor's power often left him out of the loop slightly however as ROvaniss feared that the Chagrian might rise up to take control of his throne.