Leave of absence
Jason could perceive Greg's strengths and abilities quite clearly and knew that Greg could do the same. Thus, he wanted to check something!!
Was Greg even able to think clearly after utilizing his Berserk ability or was he completely under the control of his wild instinct?
Even though they'd sparred with each other, he was still curious about Greg´s ability.
Due to this curiosity, he was almost immediately defeated in their first clash but fortunately enough, he'd been able to save himself, by pushing himself away and erecting an ice pillar below him.
Unfortunately, his current mana consumption couldn´t be recovered with his passive mana gathering while creating a large ice-cold mist area around him.
This meant he had to think on his feet, even if he didn't want to rush too much.
Normally a berserk ability had a short effective period which was not that long for lower-ranked beasts such as a mid-evolved reinforced horned bull.