This situation might appear in the novel The Fifth Persona, but it requires further context to answer this question. Normally, when a doctor was being chased by a butcher, a big shiny head would appear next to the skill button. The meaning of this symbol may vary according to the plot of the novel, but it usually means that the doctor has obtained additional skill effects such as faster movement or faster release of skills. As for the use of the skill, it depended on the plot and the specific setting of the novel. Under certain circumstances, the Doctor might use a skill to avoid Butcher's attacks or create obstacles to protect himself. In other situations, the Doctor might use a large number of skills to attack Butcher or other players. He needed to answer this question according to the plot and specific settings of the novel to determine the specific use of the skill.