C1890 The Death of the Briggs.

"Phew …"

Zachary shook his head and frowned slightly, "The consumption of the fifth revolution is so huge. Fortunately, my soul has been upgraded several times, otherwise, I would have fainted after using it."

The difference in power between each revolution of the Secular Bird Crossbow was huge. The higher it was, the more spiritual energy and soul force it consumed