After Zirrack had released his oppressing aura, the wyvern's anger had changed to fear, and out of instincts, it crossed its arms in an attempt to block the attack, but when Zirrack's burning fist came in contact with its arm an explosion occurred that incinerated within 50 meters and sending a powerful shockwave that traveled hundreds of meters.
BOOM!
Another explosion occurred but this time it came from the wyvern. A pillar of darkish-purple flames burst through its crossed arms and out from its back, turning all the trees behind it into ash.
The dried-up carcass of the wyvern stood for a while before its ashes were blown away by a gale.
"Pfft." Instructor Zirrack snorted. He was already out of the rage mode but wasn't sure if it was the side effects of the rage mode or it was just him acting up.