The Demon Eye Sorcerers had never anticipated that the avian demons coming to meet them would face such a terrifying Forbidden Sky magic spell. They watched as swathes upon swathes of avian demons descended from the sky. At first, they thought it was them swooping down to rendezvous. However, by the time the Demon Eye Sorcerer Legion noticed that something was wrong, the plummeting avian demons had already begun to howl from their high speed fall.
Long Dangdang had been waiting for this moment instead of using the Meteor Attack on the avian demons.
The Demon Eye Sorcerers certainly would intercept a magical attack from the sky with a demonic light beam bullet at the first instance, but what about allied forces falling from the sky? How would they handle that?
The Demon Eye Sorcerers' initial reaction was that the troops were there to support them, but their second reaction was, "What's gone wrong with them?" By the time they had a third reaction... it was too late...