"I told you to take off your armor!"
Bzzzz—
The sky was occupied by a string of red specks, and then it turned blood-red.
That was the Blood God's Chaos ritual.
"Blood for the Blood God, skulls for the Skull Throne!" Countless corpses, and even living bodies, were thrown into the Blood Ritual Circle, including the bodies of many Chaos fanatics.
Even some howling Khorne daemons had their heads chopped off and were shoved into the ritual circle, becoming nourishment for the offering.
There was no choice. They did not have enough sacrifices. Who could have expected that they would not be able to find cultists anywhere in the Solar System, and that they would not have obtained enough blood and corpses in the war?
The Khorne Sorcerers had no choice but to temporarily use some Chaos beings to make up the numbers, constructing a Blood Ritual Circle to summon reinforcements.
It was an enormous expenditure, practically a sacrifice made at a loss, with the great Blood God footing the bulk of the bill.
That was roughly equivalent to the believers spamming Khorne with empty envelopes, then saying, "Old man, hurry up and send me money!"
"What blasphemy..."
The phantom of Khorne, the Blood God, watched this scene, his face darkening considerably.
If it had been in the past, seeing his believers treat him with such perfunctory blasphemy would certainly have made him overturn the ritual circle and devour everything around it.
But now he had no choice but to accept all of this, and summon more daemon reinforcements to support Horus in winning this Siege of Terra.
Otherwise, he would lose even more.
Khorne, the Blood God, began going through the process, dark-faced as he granted his believers' prayers, then drew upon his own immense power and poured it