The Daemon Primarch gestured, and spectral claws tore several hundred tons of machinery loose from a nearby wreck.Guilliman had time to brace himself before the ungainly mass impacted like a comet, burying him completely beneath an avalanche of crushing metal.

Guilliman was entombed. Alarms chimed in his ears, red warning signs flashing in his peripheral vision. The pain of lacerated organs and shattered bones dragged at him,and for a moment the Lord of Ultramar was tempted simply to give in. Then he thought again of his long-suffering sons, fighting so hard for the ideals of an Imperium they had never even known. He would not betray them. He would not let one of his degenerate brothers keep him from his responsibilities – not again.

Muscles tensing, strength surging,Guilliman ripped his way up through the tumbled mountain of wreckage. He roared as he hurled aside a capacitor unit the size of a Land Raider, and stepped, bloodied but unbroken, into the hard light of Luna. Magnus arched an eyebrow at the sight,and braced his glaive to hurl another spell

Rise of the Primarch, page 78