Frank knew that he was stronger, it was only natural that Luke would need help to keep up with him. However, he didn't drop his guard since, despite the odds, Luke still wasn't showing any fear or apprehension. His words about fighting stronger opponents might not be a total lie. In any case, Frank still knew the easiest path to victory and he was about to take that one..
Frank summoned several ice spears and bombarded Luke with them. He focused on his front to make him lose sight of him for a moment. While Luke was punching and destroying the projectiles. Frank focused a lot of mana on the tip of his sword and then prepared to charge.
