"Sigo Buntz, mage and sorcerer in residence at the court at Pont Vanis. This tower was to be me new home. Bought it in an auction, you see."
Sigo Buntz is a Koviri mage who lived in his residence in Pont Vanis on court of King Tankred Thyssen. Sigo and Geralt meet under quite unusual circumstances on An Skellig, where the sorcerer is trapped behind a magical barrer inside a mysterious tower, a tower he had bought at an auction after the death of its previous owner. To free him, Geralt needs to find Gottfried's Omni-opening Grimoire and help him deactivate the Defensive Regulatory Magicon (the tower's defensive mechanism).