"I feel like I'm about to burst!" Stencil said in alarm as the energy continued to circulate in her body, looking on the verge of exploding due to the instability of its form.
"Keep at it." Hazen said, "You'll be able to endure further."
Originally, the strength of her attacks was entirely based on the level of her Systems—their Core Skills. After all, when activated, they consumed the necessary Mental Energy before unleashing the respective effect.
But that indeed had its limitations. And at the moment, Stencil wasn't a System Slayer but a miniature Immortal.
And it was typical of Immortal to change energy forms and charge them up for later use. Pretty much everyone with a bit of power in a cultivation world—Xianxia Worlds—did that.
Therefore, Stencil too was capable of the same, which was why Hazen advised her to circulate her power through the Skill-Breaker System and create an energy that contains the power of its Core Skill.
