Arc 6The Beacon and the Ambush
Lox learned the truth behind Pharos and helped its beacon guide loyalists to Macragge, where Guilliman gathered forces to oppose Horus and sought Blackstone for a human navigation system. An Alpha Legion assassination attempt left Guilliman wounded, and he asked Lox to take charge if he died.
- Lox refused Trazyn’s offer to become an immortal deputy curator and asked instead about the Age of Strife, then returned to Sotha after Trazyn sent him through a dimensional rift.
- Lox and Dantioch decoded Pharos’s data, discovered its Warp-independent communication and navigation functions, and learned from the Chief’s projection that Lox should gather other civilizations’ technology.
- Pharos’s beacon guided Fafnir and Gantula’s forces through the Ruinstorm to Macragge, where Guilliman welcomed loyalist survivors and won their pledges to fight Horus.
- Fafnir told Guilliman that the Space Wolves had destroyed Prospero under altered orders, and Guilliman allowed them to remain near him while admitting to Lox that he was building a Second Empire.
- Lox explained Pharos and the Necrons to Guilliman, who ordered a search for Blackstone across the Ultima Segmentum and warned against disturbing possible Necron tomb worlds.
- Ventanus arrived from Calth, but Alpha Legion assassins posing as his warriors attacked Guilliman, and Lox escaped the chamber and alerted the Victrix Guard while Guilliman fought the attackers.
- The Victrix Guard broke into the sealed room and killed the surviving assassins after Guilliman was struck by toxin-laced bolts, and Macragge went into lockdown as doctors treated him.
- Guilliman recovered from the attack and told Lox he had wanted to see whether the Five Hundred Worlds could endure without him, then asked Lox to take responsibility for his realm if he died.