An unearthly wind whipped across the battlefield, pushing aside the whirling sand and uncurtaining the advancing forms. Inexorable metal shades, their blasphemous weapons pulsing with energy, they strode through the storm. Racing ahead of the massive phalanxes of deathly infantry, wraiths with hands of blades melded into the terrified lines of the Emperor's Hammer, leaving a red cloud in their wake. As the sky convulsed above the screaming battle-hell, a massive shape poured from the heavens. Settling above the ancient metal creatures, it coalesced into a great form, a humanoid, screaming face and a nebulous body. Talons crusted with grave-dirt tested the air, waiting for the appropriate moment. The other hand, clasped around a vast scythe, clenched and unclenched in anticipation.
And
Then
It stared straight at the ranks of trembling Guardsmen. A maddening scream ripped itself from a sinewy chest, and it launched itself into the terror. Its gaseous lower half appeared to engulf it and it hit the wildly shooting chaos that was the Imperial Guard like a black comet, scattering men this way and that. A series of deathly, gleeful roars twisted from the darkened bloodbath as spikes of light screamed from the weapons of the skeletal warriors. Those caught in these enlightening rays made barely a sound as they collapsed in a heap, surrounded by a scarlet mist.
Amid this, the darkness known as Nightbringer rejoiced. This world would soon be his.