This is the Soul of Nibbin Timbersprocket. You gained the soul of Nibbin Timbersprocket,  by consuming the brain of the monk gnome of tranqulity. He now also lives in your body. By doing so you gained Advantage on INT, WIS and CHA savingtrows. 

Notes: Advantage: Charisma Saving Throws, Advantage: Intelligence Saving Throws, Advantage: Wisdom Saving Throws