Vs Runic Arms Squad And Metal Squad (Part 10)

The reason he had the energy to curse out loud is because of his physique. In the final moment when the old man's stick was about to hammer down on his head, he used '2x Power Spike'. Even though he is stingy, he would never play around with his life.

The '2x Power Spike' was not the only reason he could survive the [Qi Wave] as well as the fall. He also started casting [Petal Dance]before the [Qi Wave] hit him. All along the way, from the time when he was hanging by a hand to when he made contact with the ground, he was casting [Petal Dance] all along. To speed up the casting process, he used [Boost]. 

That is the main reason why he could cast a skill which would normally take more than a minute in less than forty seconds.