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Primus Sha'aull is a Cabal Centurion fought at the end of The Garden's Spire. He is the Primus of the Blind Legion and has an interest in Vex artifacts. No one knows what fascination the machines held for Sha'aull, although he was reportedly putting his command at great risk by pushing into Vex territory. Sha'aull was assassinated however, after a Guardian breached the Legion's perimeter in order to investigate the Vex Conflux held by the Cabal.