Phase-smith Karax continued his studies on the Keystone retrieved from Korhal, and believed he could find the location of Ulnar, the rumored homeworld of the xel'naga, from the artifact. The Keystone revealed this location to be in the Alterian Rift, where no life could survive. Karax was certain he was in error, but Artanis insisted that this was the correct course as this aligned with Zeratul's prophecies, and set out for the rift. The Spear of Adun penetrated the rift, and arrived at a large temple. Matriarch Vorazun stated that they could not send or receive transmissions while in the rift. Grand Preserver Rohana located an access way into the temple, and the Daelaam forces were sent to secure it. Artanis's forces arrived at the entryway to the temple, which was sealed by five celestial locks that controlled access to the temple. He moved forces to unlock them but was ambushed by the Tal'darim, who had arrived with Moebius Corps reinforcements. They sealed the locks and set up defensive positions around them. The Daelaam moved to reclaim the locks, destroying the Moebius Corps and Tal'Darim forces defending them and enduring several counterattacks to reclaim the locks. The Tal'darim deployed a titanic warp prism with a solarite core to defend the temple, which could be destroyed to obtain more power for the Spear of Adun. All celestial locks were captured, opening the access way. Amon's forces fell back, leaving a great stillness in the temple. With the way opened, Artanis insisted on going into the temple alone. Karax informed him the Spear of Adun would be unable to help him inside the temple. Vorazun protested, but Artanis stated he would not risk any more lives. "Temple of Unification" mission from 'Starcraft 2: Legacy of the Void' PC game. Gameplay on Normal. Watch more Starcraft videos:.