As soon as Randy appeared behind one of Wyvernia named Faritula, there were six ice spears shot toward him. Three ice spears from his left while another three ice spears from his right.
Randy shocked and realized the other two Wyvernia knew of his ambush, but only Faritula which was the only had not realized his ambush. This meant, they were not aware of him before he ambushed Faritula and only realized when he appeared behind Faritula.
This showed how terrifying the Wyvernia was; also this meant he could not let this chance to kill one of them slid despite having six ice spears aimed at him.
The six ice spears were only 2 meters away before him. It would only take in the second's split before the six ice spears hit his body, but based on how terrifying Wyvernia was; he knew he could not let the chance to kill one of them slid away.