The death of the Necromancer meant the collapse of the army of Destiny. They were resurrected through the power of the Necromancer, and without that source, they would die.
While Kyros charged and fought Heralcus, everyone was also busy with their battles and fought against the Champion skeletons. Branze led the battle with Diana to block the army. His might as a Templar and Diana's Paladin powers used the shield to strike and the shield to defend in a wide range.
The army of Heralcus was bursting out of the rubble of the mountain.
The Wings of the Nephilim couldn't take flight as everyone expected a gigantic battle of Cardinal proportions on the skies above. And so, all the mages joined the ranks of the ground army. Only the Emberdons dared to take the skies and accompanied Mezal on his fight against Neteri.