The Iron Eagle subordinate swung backward, wanting to escape from Lugh's pursuit. However, his speed was not as fast and agile as Lugh's, and he was suppressed by the dark spots. No matter how he dodged, he could not leave Lugh.
Lugh teased the Iron Eagle subordinate and made him keep flapping his wings. Because of the weight of the wings, each flap required more energy than Lugh. If he continued to fly like this, it would not take long, he would be exhausted by his own weight, using up his last bit of energy.