He took the role of a commander of the Saradominist forces during the God Wars, and was known among the troops for being a bully. A week before he was due to ship out, he was in a tavern with Guthan, who was upset about his beloved Isolde abandoning him. During the course of the evening, a fight started, and Guthan killed Commander Jaycliff. Guthan, fearful for his life for killing a Saradominist commander, bargained with Sliske, forming a deal in which he and his brothers would join the crusades in return for clemency for being a war hero.
His soul was later revived by Sliske and used as part of Guthan's trial. He claimed that he had spent a long time being chastised by Saradomin for his cruel ways, and regretted not being the force for good that he could have been.