As you in hide in a trench alongside the other guardsmen, you hear the incoming tyranids slowly winning the battle. You peek over the edge and notice the Blood Angels, which arrived in drop pods hours ago, were being overrun by the xenos. You yelp as a defeated Astartes fell next to you. A tyranid jumps on his body and screeches at you. As you pray to the Emperor to protect you, the xenos gets thrown to the side. You gaze upon your saviour. A large, glowing being clad in gold with white wings.