Jack gave in to his instinct and launched the most powerful hurricane he could muster in an attempt to wipe off Zach from the face of the earth before Zach could show his true strength.
The hurricane was even more powerful than he had used in Windsor family mansion. Luke despite being A rank mage had been unable to handle the strength of the storm and had almost been blown away back then.
Zach wasn't any stronger than Luke either. He usually relied on the powerful weapons and his vast combat experience at his disposal to put up a fight against opponents stronger than him.
Since he had been caught unaware by the sudden attack, he was blown off into the distance like a leaf in the eye of the storm. Christina wasn't any different from him. She was blown along with him.