The group passed through the Webway gate into an enormous crater, then saw...
Terra.
Terra hung overhead, wreathed in smoke and flames.
Horus's face darkened.
The Aeldari had brazenly opened a gate right in the heart of the Imperium of Man, and no one had discovered it in tens of thousands of years.
This Webway gate was large enough to accommodate an enormous Expeditionary Force. Even warships could pass through it.
"What happened to Terra?!" Guilliman exclaimed in shock as he emerged from the gate.
Even from Luna, the blasphemous altar to Khorne on the Terra Continent was clearly visible, as stark as a bloody gash left by a blade cutting into flesh.
"They are servants of the Blood God. I can feel their presence," Celestine said.
"Was this your doing, Horus?!" Guilliman roared.
The Terra Expeditionary Force immediately aimed their weapons at the nearby Luna Wolves, who responded in kind without backing down.
Horus regarded his brother with contempt.
"It seems ten thousand years of sleep have rotted your brain, Guilliman."
Just as the two squared off, another voice rang out.
"Welcome, my brothers."
The Thousand Sons suddenly appeared around the top of the crater, their soulless suits of armor staring fixedly at the two forces.
An enormous red cyclops floated smugly in the air. Vortices of psyker power spread around him, and rifts began to open between reality and the Warp.
The Red-Eyed Giant-Magnus, master of the Thousand Sons, the Fifteenth Legion.
The Imperium's second-most powerful psyker after the hero Malcador, a being devoted to the pursuit of knowledge and sorcery.
Now that he had surrendered part of his soul to Tzeentch, his mastery of sorcery had reached its absolute pinnacle.
"Roboute Guilliman, it has been a long time. You are as foolish as ever."
"Every step you