Star·Blood Dragon Scale was a very powerful skill.
It could replenish its own life based on the damage inflicted while greatly enhancing the attack, until the life value reached 80% after which the skill would end.
But Qin Chuan had already identified a problem with this skill from his past practical usage.
It required a life value of less than 50% to be activated, a condition more stringent than a cooldown.
In battles against strong opponents, when at a disadvantage, one's life value would often fall below 50%, allowing multiple triggers of this skill in a single fight to maximize the effects of Blood Dragon Scale.
But Qin Chuan never fought at a disadvantage.
Thus, besides the initial activation of the [Blood Fury] that could lower the health to meet the usage requirement of Blood Dragon Scale, it was difficult to reach afterward.