Trogskull, as he attacked the armored man, felt slightly pressured on both sides, and attacked Ocade, attempting to break his weapon hand.
...
In a far corner of the realm, away from prying eyes, there was a crack. Too small for the human eye, but noticeable to one in particular -- Tzeentch. He had watched this realm for some time. It held power similar to his own, similar enough so that he could amplify his own strength with it. He could bring about a Great Change unlike anything even other Gods were incapable of. He kept this crack secret, knowing that if the others found it, He would be compromised.
He did something most unlike Himself, and spoke directly to one of his most favorite Princes, Albius. A Daemon Prince, unknown to any but Tzeentch himself, for all who had seen him were dead. He led a horde of Chaos unlike any that had been assembled in some time. Behind him stood a legion of Marines; where they came from, no one is sure. The other legions spoke ill of them; that they were not true Marines, but rather productions of false materials. Others said they were the very essence of Tzeentch imbued into mortal flesh. But all that mattered was that their 1st Company, 100 of the fiercest warriors in the galaxy were to go with the Daemon hordes to secure this strange realm. The Lord of Change had known of the field surrounding the realm, that it weakened all who entered. This was bypassed easily enough by a god, and that same gift was capable of being shared with their subjects. They would come in full strength.
Albius came first, tearing through the rip with the ferocity and strength of a bull, his Marines behind him. Then came the horrors, and other Daemons of the Lord of Change. Behind them, however, came the crowning jewel of the invasion; a Greater Daemon of Tzeentch, a lesser Lord of Change entered the realm, lifting a crystal given to him by his Master. A dark shadow fell across the castle and all the land surrounding it. Those who had been in its presence before knew the feeling, and a sense of great dread came over them.
...
Rayne was reluctant to tell Guardian everything, but he shared some details.
"I was born in the same place as the rest of the squad. Same village as Atlas. Never met him until I joined, though; we were from different generations. We don't look it, but we will still be in our prime long after you and your men's bones are but dust. It wasn't easy getting in, though, the initiation was terrible enough, but the missions they send Scouts on, and the enhancements... it was physical and mental torture."
Before he could continue, he was taken aback with both awe and terror as the shadow of Chaos befell the land. He looked to Guardian with the closest thing to fear a Marine could feel.
"Gather your men, and stay with us. Nowhere is safe but with us."
He activated his comm, and stated with a sense of urgency
"Attention, denizens of this realm. You are in grave danger. Report to the beacon I am placing on the GPS system immediately, and prepare for the worst. Luke, Ultramarine, I don't know if you can hear this, but if you can we need your help. Chaos has found this place."
((And it begins. I chose Tzeentch, just because his motive seemed the best. I may involve the others in a civil war of sorts, though, perhaps even involving... Malal. MUAHAHAHAHAHAHAHA!!!))