The Goa'uld modified humans to create the Jaffa to serve as soldiers and as incubators for their young via an abdominal pouch. The story of the Jaffa is primarily told through the main character Teal'c. The Jaffa's look in the series was copied from the Egyptian look of Ra from the film. The Jaffa rely on the symbiotes for their immune system or will die a slow and painful death that can only be avoided by either acquiring a new symbiote or by lifelong regular injections of a replacement drug called Tretonin. Ordinary Jaffa bear a black tattoo symbol of their Goa'uld master's insignia on their foreheads, and the highest-ranking Jaffa in the service of a Goa'uld is known as the First Prime, who has the symbol branded in gold. SG-1 encounters three notable Jaffa factions: the all-female Hak'tyl ("liberation") lead by Ishta in season 7's "Birthright", the Ancient-worshipping Sodan in season 9's "Babylon", and the Ori-worshipping Illac Renin (meaning "Kingdom of the Path") in season 10's "Talion". The planet Dakara, a holy ground for the Goa'uld and Jaffa alike, is the turning point in the Goa'uld–Jaffa power struggle in season 8's "Reckoning"/"Threads": It is where the Ancients first landed in the Milky Way Galaxy after fleeing the Alteran Galaxy and later built a powerful device, capable of destroying existing life or creating it where there was none before, long before the galaxy was colonized by the Goa'uld or the humans. Since season 8 was intended to be the show's last, the producers had finished it with the defeat of the Goa'uld and the Replicators. However, when the Sci Fi Channel renewed the series, the producers had grown tired of writing endings. Having had good experiences with the first season of Stargate Atlantis, the producers decided to revamp the series by more than just adding new characters, new villains and new missions. Thus they considered the beginning of Season 9 as the pilot of a new show and replaced the Goa'uld with the Ori as the main villains. The Goa'uld still appeared in the show, but on a regular basis under the command of Ba'al. Ori A major threat in the cosmos, the Ori are Ascended beings who use their advanced knowledge of the universe to force lesser beings to worship them. In essence, they used to be Ancients, however they split into separate groups due to different views of